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AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[ #include #ifndef __GNU_GETTEXT_SUPPORTED_REVISION extern int _nl_msg_cat_cntr; extern #ifdef __cplusplus "C" #endif const char *_nl_expand_alias (const char *); #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) #else #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 #endif $gt_revision_test_code ]], [[ bindtextdomain ("", ""); return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION ]])], [eval "$gt_func_gnugettext_libintl=yes"], [eval "$gt_func_gnugettext_libintl=no"]) dnl Now see whether libintl exists and depends on libiconv. if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then LIBS="$LIBS $LIBICONV" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[ #include #ifndef __GNU_GETTEXT_SUPPORTED_REVISION extern int _nl_msg_cat_cntr; extern #ifdef __cplusplus "C" #endif const char *_nl_expand_alias (const char *); #define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias ("")) #else #define __GNU_GETTEXT_SYMBOL_EXPRESSION 0 #endif $gt_revision_test_code ]], [[ bindtextdomain ("", ""); return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION ]])], [LIBINTL="$LIBINTL $LIBICONV" LTLIBINTL="$LTLIBINTL $LTLIBICONV" eval "$gt_func_gnugettext_libintl=yes" ]) fi CPPFLAGS="$gt_save_CPPFLAGS" LIBS="$gt_save_LIBS"]) fi dnl If an already present or preinstalled GNU gettext() is found, dnl use it. But if this macro is used in GNU gettext, and GNU dnl gettext is already preinstalled in libintl, we update this dnl libintl. (Cf. the install rule in intl/Makefile.in.) if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \ || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \ && test "$PACKAGE" != gettext-runtime \ && test "$PACKAGE" != gettext-tools; }; then gt_use_preinstalled_gnugettext=yes else dnl Reset the values set by searching for libintl. LIBINTL= LTLIBINTL= INCINTL= fi ifelse(gt_included_intl, yes, [ if test "$gt_use_preinstalled_gnugettext" != "yes"; then dnl GNU gettext is not found in the C library. dnl Fall back on included GNU gettext library. nls_cv_use_gnu_gettext=yes fi fi if test "$nls_cv_use_gnu_gettext" = "yes"; then dnl Mark actions used to generate GNU NLS library. BUILD_INCLUDED_LIBINTL=yes USE_INCLUDED_LIBINTL=yes LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LIBICONV $LIBTHREAD" LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.la $LTLIBICONV $LTLIBTHREAD" LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'` fi CATOBJEXT= if test "$gt_use_preinstalled_gnugettext" = "yes" \ || test "$nls_cv_use_gnu_gettext" = "yes"; then dnl Mark actions to use GNU gettext tools. CATOBJEXT=.gmo fi ]) if test -n "$INTL_MACOSX_LIBS"; then if test "$gt_use_preinstalled_gnugettext" = "yes" \ || test "$nls_cv_use_gnu_gettext" = "yes"; then dnl Some extra flags are needed during linking. LIBINTL="$LIBINTL $INTL_MACOSX_LIBS" LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS" fi fi if test "$gt_use_preinstalled_gnugettext" = "yes" \ || test "$nls_cv_use_gnu_gettext" = "yes"; then AC_DEFINE([ENABLE_NLS], [1], [Define to 1 if translation of program messages to the user's native language is requested.]) else USE_NLS=no fi fi AC_MSG_CHECKING([whether to use NLS]) AC_MSG_RESULT([$USE_NLS]) if test "$USE_NLS" = "yes"; then AC_MSG_CHECKING([where the gettext function comes from]) if test "$gt_use_preinstalled_gnugettext" = "yes"; then if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then gt_source="external libintl" else gt_source="libc" fi else gt_source="included intl directory" fi AC_MSG_RESULT([$gt_source]) fi if test "$USE_NLS" = "yes"; then if test "$gt_use_preinstalled_gnugettext" = "yes"; then if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then AC_MSG_CHECKING([how to link with libintl]) AC_MSG_RESULT([$LIBINTL]) AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL]) fi dnl For backward compatibility. Some packages may be using this. AC_DEFINE([HAVE_GETTEXT], [1], [Define if the GNU gettext() function is already present or preinstalled.]) AC_DEFINE([HAVE_DCGETTEXT], [1], [Define if the GNU dcgettext() function is already present or preinstalled.]) fi dnl We need to process the po/ directory. POSUB=po fi ifelse(gt_included_intl, yes, [ dnl In GNU gettext we have to set BUILD_INCLUDED_LIBINTL to 'yes' dnl because some of the testsuite requires it. BUILD_INCLUDED_LIBINTL=yes dnl Make all variables we use known to autoconf. AC_SUBST([BUILD_INCLUDED_LIBINTL]) AC_SUBST([USE_INCLUDED_LIBINTL]) AC_SUBST([CATOBJEXT]) ]) dnl For backward compatibility. Some Makefiles may be using this. INTLLIBS="$LIBINTL" AC_SUBST([INTLLIBS]) dnl Make all documented variables known to autoconf. AC_SUBST([LIBINTL]) AC_SUBST([LTLIBINTL]) AC_SUBST([POSUB]) ]) dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized. m4_define([gt_NEEDS_INIT], [ m4_divert_text([DEFAULTS], [gt_needs=]) m4_define([gt_NEEDS_INIT], []) ]) dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL]) AC_DEFUN([AM_GNU_GETTEXT_NEED], [ m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"]) ]) dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version]) AC_DEFUN([AM_GNU_GETTEXT_VERSION], []) dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version]) AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], []) # host-cpu-c-abi.m4 serial 11 dnl Copyright (C) 2002-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible and Sam Steingold. dnl Sets the HOST_CPU variable to the canonical name of the CPU. dnl Sets the HOST_CPU_C_ABI variable to the canonical name of the CPU with its dnl C language ABI (application binary interface). dnl Also defines __${HOST_CPU}__ and __${HOST_CPU_C_ABI}__ as C macros in dnl config.h. dnl dnl This canonical name can be used to select a particular assembly language dnl source file that will interoperate with C code on the given host. dnl dnl For example: dnl * 'i386' and 'sparc' are different canonical names, because code for i386 dnl will not run on SPARC CPUs and vice versa. They have different dnl instruction sets. dnl * 'sparc' and 'sparc64' are different canonical names, because code for dnl 'sparc' and code for 'sparc64' cannot be linked together: 'sparc' code dnl contains 32-bit instructions, whereas 'sparc64' code contains 64-bit dnl instructions. A process on a SPARC CPU can be in 32-bit mode or in 64-bit dnl mode, but not both. dnl * 'mips' and 'mipsn32' are different canonical names, because they use dnl different argument passing and return conventions for C functions, and dnl although the instruction set of 'mips' is a large subset of the dnl instruction set of 'mipsn32'. dnl * 'mipsn32' and 'mips64' are different canonical names, because they use dnl different sizes for the C types like 'int' and 'void *', and although dnl the instruction sets of 'mipsn32' and 'mips64' are the same. dnl * The same canonical name is used for different endiannesses. You can dnl determine the endianness through preprocessor symbols: dnl - 'arm': test __ARMEL__. dnl - 'mips', 'mipsn32', 'mips64': test _MIPSEB vs. _MIPSEL. dnl - 'powerpc64': test _BIG_ENDIAN vs. _LITTLE_ENDIAN. dnl * The same name 'i386' is used for CPUs of type i386, i486, i586 dnl (Pentium), AMD K7, Pentium II, Pentium IV, etc., because dnl - Instructions that do not exist on all of these CPUs (cmpxchg, dnl MMX, SSE, SSE2, 3DNow! etc.) are not frequently used. If your dnl assembly language source files use such instructions, you will dnl need to make the distinction. dnl - Speed of execution of the common instruction set is reasonable across dnl the entire family of CPUs. If you have assembly language source files dnl that are optimized for particular CPU types (like GNU gmp has), you dnl will need to make the distinction. dnl See . AC_DEFUN([gl_HOST_CPU_C_ABI], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_C_ASM]) AC_CACHE_CHECK([host CPU and C ABI], [gl_cv_host_cpu_c_abi], [case "$host_cpu" in changequote(,)dnl i[4567]86 ) changequote([,])dnl gl_cv_host_cpu_c_abi=i386 ;; x86_64 ) # On x86_64 systems, the C compiler may be generating code in one of # these ABIs: # - 64-bit instruction set, 64-bit pointers, 64-bit 'long': x86_64. # - 64-bit instruction set, 64-bit pointers, 32-bit 'long': x86_64 # with native Windows (mingw, MSVC). # - 64-bit instruction set, 32-bit pointers, 32-bit 'long': x86_64-x32. # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': i386. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if (defined __x86_64__ || defined __amd64__ \ || defined _M_X64 || defined _M_AMD64) int ok; #else error fail #endif ]])], [AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __ILP32__ || defined _ILP32 int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=x86_64-x32], [gl_cv_host_cpu_c_abi=x86_64])], [gl_cv_host_cpu_c_abi=i386]) ;; changequote(,)dnl alphaev[4-8] | alphaev56 | alphapca5[67] | alphaev6[78] ) changequote([,])dnl gl_cv_host_cpu_c_abi=alpha ;; arm* | aarch64 ) # Assume arm with EABI. # On arm64 systems, the C compiler may be generating code in one of # these ABIs: # - aarch64 instruction set, 64-bit pointers, 64-bit 'long': arm64. # - aarch64 instruction set, 32-bit pointers, 32-bit 'long': arm64-ilp32. # - 32-bit instruction set, 32-bit pointers, 32-bit 'long': arm or armhf. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#ifdef __aarch64__ int ok; #else error fail #endif ]])], [AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __ILP32__ || defined _ILP32 int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=arm64-ilp32], [gl_cv_host_cpu_c_abi=arm64])], [# Don't distinguish little-endian and big-endian arm, since they # don't require different machine code for simple operations and # since the user can distinguish them through the preprocessor # defines __ARMEL__ vs. __ARMEB__. # But distinguish arm which passes floating-point arguments and # return values in integer registers (r0, r1, ...) - this is # gcc -mfloat-abi=soft or gcc -mfloat-abi=softfp - from arm which # passes them in float registers (s0, s1, ...) and double registers # (d0, d1, ...) - this is gcc -mfloat-abi=hard. GCC 4.6 or newer # sets the preprocessor defines __ARM_PCS (for the first case) and # __ARM_PCS_VFP (for the second case), but older GCC does not. echo 'double ddd; void func (double dd) { ddd = dd; }' > conftest.c # Look for a reference to the register d0 in the .s file. AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $gl_c_asm_opt conftest.c) >/dev/null 2>&1 if LC_ALL=C grep 'd0,' conftest.$gl_asmext >/dev/null; then gl_cv_host_cpu_c_abi=armhf else gl_cv_host_cpu_c_abi=arm fi rm -f conftest* ]) ;; hppa1.0 | hppa1.1 | hppa2.0* | hppa64 ) # On hppa, the C compiler may be generating 32-bit code or 64-bit # code. In the latter case, it defines _LP64 and __LP64__. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#ifdef __LP64__ int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=hppa64], [gl_cv_host_cpu_c_abi=hppa]) ;; ia64* ) # On ia64 on HP-UX, the C compiler may be generating 64-bit code or # 32-bit code. In the latter case, it defines _ILP32. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#ifdef _ILP32 int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=ia64-ilp32], [gl_cv_host_cpu_c_abi=ia64]) ;; mips* ) # We should also check for (_MIPS_SZPTR == 64), but gcc keeps this # at 32. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined _MIPS_SZLONG && (_MIPS_SZLONG == 64) int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=mips64], [# In the n32 ABI, _ABIN32 is defined, _ABIO32 is not defined (but # may later get defined by ), and _MIPS_SIM == _ABIN32. # In the 32 ABI, _ABIO32 is defined, _ABIN32 is not defined (but # may later get defined by ), and _MIPS_SIM == _ABIO32. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if (_MIPS_SIM == _ABIN32) int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=mipsn32], [gl_cv_host_cpu_c_abi=mips])]) ;; powerpc* ) # Different ABIs are in use on AIX vs. Mac OS X vs. Linux,*BSD. # No need to distinguish them here; the caller may distinguish # them based on the OS. # On powerpc64 systems, the C compiler may still be generating # 32-bit code. And on powerpc-ibm-aix systems, the C compiler may # be generating 64-bit code. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __powerpc64__ || defined _ARCH_PPC64 int ok; #else error fail #endif ]])], [# On powerpc64, there are two ABIs on Linux: The AIX compatible # one and the ELFv2 one. The latter defines _CALL_ELF=2. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined _CALL_ELF && _CALL_ELF == 2 int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=powerpc64-elfv2], [gl_cv_host_cpu_c_abi=powerpc64]) ], [gl_cv_host_cpu_c_abi=powerpc]) ;; rs6000 ) gl_cv_host_cpu_c_abi=powerpc ;; riscv32 | riscv64 ) # There are 2 architectures (with variants): rv32* and rv64*. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if __riscv_xlen == 64 int ok; #else error fail #endif ]])], [cpu=riscv64], [cpu=riscv32]) # There are 6 ABIs: ilp32, ilp32f, ilp32d, lp64, lp64f, lp64d. # Size of 'long' and 'void *': AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __LP64__ int ok; #else error fail #endif ]])], [main_abi=lp64], [main_abi=ilp32]) # Float ABIs: # __riscv_float_abi_double: # 'float' and 'double' are passed in floating-point registers. # __riscv_float_abi_single: # 'float' are passed in floating-point registers. # __riscv_float_abi_soft: # No values are passed in floating-point registers. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __riscv_float_abi_double int ok; #else error fail #endif ]])], [float_abi=d], [AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __riscv_float_abi_single int ok; #else error fail #endif ]])], [float_abi=f], [float_abi='']) ]) gl_cv_host_cpu_c_abi="${cpu}-${main_abi}${float_abi}" ;; s390* ) # On s390x, the C compiler may be generating 64-bit (= s390x) code # or 31-bit (= s390) code. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __LP64__ || defined __s390x__ int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=s390x], [gl_cv_host_cpu_c_abi=s390]) ;; sparc | sparc64 ) # UltraSPARCs running Linux have `uname -m` = "sparc64", but the # C compiler still generates 32-bit code. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __sparcv9 || defined __arch64__ int ok; #else error fail #endif ]])], [gl_cv_host_cpu_c_abi=sparc64], [gl_cv_host_cpu_c_abi=sparc]) ;; *) gl_cv_host_cpu_c_abi="$host_cpu" ;; esac ]) dnl In most cases, $HOST_CPU and $HOST_CPU_C_ABI are the same. HOST_CPU=`echo "$gl_cv_host_cpu_c_abi" | sed -e 's/-.*//'` HOST_CPU_C_ABI="$gl_cv_host_cpu_c_abi" AC_SUBST([HOST_CPU]) AC_SUBST([HOST_CPU_C_ABI]) # This was # AC_DEFINE_UNQUOTED([__${HOST_CPU}__]) # AC_DEFINE_UNQUOTED([__${HOST_CPU_C_ABI}__]) # earlier, but KAI C++ 3.2d doesn't like this. sed -e 's/-/_/g' >> confdefs.h < #include ]], [[iconv_t cd = iconv_open("",""); iconv(cd,NULL,NULL,NULL,NULL); iconv_close(cd);]])], [am_cv_func_iconv=yes]) if test "$am_cv_func_iconv" != yes; then am_save_LIBS="$LIBS" LIBS="$LIBS $LIBICONV" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[ #include #include ]], [[iconv_t cd = iconv_open("",""); iconv(cd,NULL,NULL,NULL,NULL); iconv_close(cd);]])], [am_cv_lib_iconv=yes] [am_cv_func_iconv=yes]) LIBS="$am_save_LIBS" fi ]) if test "$am_cv_func_iconv" = yes; then AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11, dnl Solaris 10. am_save_LIBS="$LIBS" if test $am_cv_lib_iconv = yes; then LIBS="$LIBS $LIBICONV" fi am_cv_func_iconv_works=no for ac_iconv_const in '' 'const'; do AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[ #include #include #ifndef ICONV_CONST # define ICONV_CONST $ac_iconv_const #endif ]], [[int result = 0; /* Test against AIX 5.1 bug: Failures are not distinguishable from successful returns. */ { iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8"); if (cd_utf8_to_88591 != (iconv_t)(-1)) { static ICONV_CONST char input[] = "\342\202\254"; /* EURO SIGN */ char buf[10]; ICONV_CONST char *inptr = input; size_t inbytesleft = strlen (input); char *outptr = buf; size_t outbytesleft = sizeof (buf); size_t res = iconv (cd_utf8_to_88591, &inptr, &inbytesleft, &outptr, &outbytesleft); if (res == 0) result |= 1; iconv_close (cd_utf8_to_88591); } } /* Test against Solaris 10 bug: Failures are not distinguishable from successful returns. */ { iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646"); if (cd_ascii_to_88591 != (iconv_t)(-1)) { static ICONV_CONST char input[] = "\263"; char buf[10]; ICONV_CONST char *inptr = input; size_t inbytesleft = strlen (input); char *outptr = buf; size_t outbytesleft = sizeof (buf); size_t res = iconv (cd_ascii_to_88591, &inptr, &inbytesleft, &outptr, &outbytesleft); if (res == 0) result |= 2; iconv_close (cd_ascii_to_88591); } } /* Test against AIX 6.1..7.1 bug: Buffer overrun. */ { iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1"); if (cd_88591_to_utf8 != (iconv_t)(-1)) { static ICONV_CONST char input[] = "\304"; static char buf[2] = { (char)0xDE, (char)0xAD }; ICONV_CONST char *inptr = input; size_t inbytesleft = 1; char *outptr = buf; size_t outbytesleft = 1; size_t res = iconv (cd_88591_to_utf8, &inptr, &inbytesleft, &outptr, &outbytesleft); if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD) result |= 4; iconv_close (cd_88591_to_utf8); } } #if 0 /* This bug could be worked around by the caller. */ /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */ { iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591"); if (cd_88591_to_utf8 != (iconv_t)(-1)) { static ICONV_CONST char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337"; char buf[50]; ICONV_CONST char *inptr = input; size_t inbytesleft = strlen (input); char *outptr = buf; size_t outbytesleft = sizeof (buf); size_t res = iconv (cd_88591_to_utf8, &inptr, &inbytesleft, &outptr, &outbytesleft); if ((int)res > 0) result |= 8; iconv_close (cd_88591_to_utf8); } } #endif /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is provided. */ { /* Try standardized names. */ iconv_t cd1 = iconv_open ("UTF-8", "EUC-JP"); /* Try IRIX, OSF/1 names. */ iconv_t cd2 = iconv_open ("UTF-8", "eucJP"); /* Try AIX names. */ iconv_t cd3 = iconv_open ("UTF-8", "IBM-eucJP"); /* Try HP-UX names. */ iconv_t cd4 = iconv_open ("utf8", "eucJP"); if (cd1 == (iconv_t)(-1) && cd2 == (iconv_t)(-1) && cd3 == (iconv_t)(-1) && cd4 == (iconv_t)(-1)) result |= 16; if (cd1 != (iconv_t)(-1)) iconv_close (cd1); if (cd2 != (iconv_t)(-1)) iconv_close (cd2); if (cd3 != (iconv_t)(-1)) iconv_close (cd3); if (cd4 != (iconv_t)(-1)) iconv_close (cd4); } return result; ]])], [am_cv_func_iconv_works=yes], , [case "$host_os" in aix* | hpux*) am_cv_func_iconv_works="guessing no" ;; *) am_cv_func_iconv_works="guessing yes" ;; esac]) test "$am_cv_func_iconv_works" = no || break done LIBS="$am_save_LIBS" ]) case "$am_cv_func_iconv_works" in *no) am_func_iconv=no am_cv_lib_iconv=no ;; *) am_func_iconv=yes ;; esac else am_func_iconv=no am_cv_lib_iconv=no fi if test "$am_func_iconv" = yes; then AC_DEFINE([HAVE_ICONV], [1], [Define if you have the iconv() function and it works.]) fi if test "$am_cv_lib_iconv" = yes; then AC_MSG_CHECKING([how to link with libiconv]) AC_MSG_RESULT([$LIBICONV]) else dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV dnl either. CPPFLAGS="$am_save_CPPFLAGS" LIBICONV= LTLIBICONV= fi AC_SUBST([LIBICONV]) AC_SUBST([LTLIBICONV]) ]) dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to dnl avoid warnings like dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required". dnl This is tricky because of the way 'aclocal' is implemented: dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN. dnl Otherwise aclocal's initial scan pass would miss the macro definition. dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions. dnl Otherwise aclocal would emit many "Use of uninitialized value $1" dnl warnings. m4_define([gl_iconv_AC_DEFUN], m4_version_prereq([2.64], [[AC_DEFUN_ONCE( [$1], [$2])]], [m4_ifdef([gl_00GNULIB], [[AC_DEFUN_ONCE( [$1], [$2])]], [[AC_DEFUN( [$1], [$2])]])])) gl_iconv_AC_DEFUN([AM_ICONV], [ AM_ICONV_LINK if test "$am_cv_func_iconv" = yes; then AC_MSG_CHECKING([for iconv declaration]) AC_CACHE_VAL([am_cv_proto_iconv], [ AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include #include extern #ifdef __cplusplus "C" #endif #if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); #else size_t iconv(); #endif ]], [[]])], [am_cv_proto_iconv_arg1=""], [am_cv_proto_iconv_arg1="const"]) am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` AC_MSG_RESULT([ $am_cv_proto_iconv]) else dnl When compiling GNU libiconv on a system that does not have iconv yet, dnl pick the POSIX compliant declaration without 'const'. am_cv_proto_iconv_arg1="" fi AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1], [Define as const if the declaration of iconv() needs const.]) dnl Also substitute ICONV_CONST in the gnulib generated . m4_ifdef([gl_ICONV_H_DEFAULTS], [AC_REQUIRE([gl_ICONV_H_DEFAULTS]) if test -n "$am_cv_proto_iconv_arg1"; then ICONV_CONST="const" fi ]) ]) # lib-ld.m4 serial 9 dnl Copyright (C) 1996-2003, 2009-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Subroutines of libtool.m4, dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid dnl collision with libtool.m4. dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no. AC_DEFUN([AC_LIB_PROG_LD_GNU], [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld], [# I'd rather use --version here, but apparently some GNU lds only accept -v. case `$LD -v 2>&1 /dev/null 2>&1 \ && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ || PATH_SEPARATOR=';' } fi if test -n "$LD"; then AC_MSG_CHECKING([for ld]) elif test "$GCC" = yes; then AC_MSG_CHECKING([for ld used by $CC]) elif test "$with_gnu_ld" = yes; then AC_MSG_CHECKING([for GNU ld]) else AC_MSG_CHECKING([for non-GNU ld]) fi if test -n "$LD"; then # Let the user override the test with a path. : else AC_CACHE_VAL([acl_cv_path_LD], [ acl_cv_path_LD= # Final result of this test ac_prog=ld # Program to search in $PATH if test "$GCC" = yes; then # Check if gcc -print-prog-name=ld gives a path. case $host in *-*-mingw*) # gcc leaves a trailing carriage return which upsets mingw acl_output=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; *) acl_output=`($CC -print-prog-name=ld) 2>&5` ;; esac case $acl_output in # Accept absolute paths. [[\\/]]* | ?:[[\\/]]*) re_direlt='/[[^/]][[^/]]*/\.\./' # Canonicalize the pathname of ld acl_output=`echo "$acl_output" | sed 's%\\\\%/%g'` while echo "$acl_output" | grep "$re_direlt" > /dev/null 2>&1; do acl_output=`echo $acl_output | sed "s%$re_direlt%/%"` done # Got the pathname. No search in PATH is needed. acl_cv_path_LD="$acl_output" ac_prog= ;; "") # If it fails, then pretend we aren't using GCC. ;; *) # If it is relative, then search for the first ld in PATH. with_gnu_ld=unknown ;; esac fi if test -n "$ac_prog"; then # Search for $ac_prog in $PATH. acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR for ac_dir in $PATH; do IFS="$acl_save_ifs" test -z "$ac_dir" && ac_dir=. if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then acl_cv_path_LD="$ac_dir/$ac_prog" # Check to see if the program is GNU ld. I'd rather use --version, # but apparently some variants of GNU ld only accept -v. # Break only if it was the GNU/non-GNU ld that we prefer. case `"$acl_cv_path_LD" -v 2>&1 conftest.sh . ./conftest.sh rm -f ./conftest.sh acl_cv_rpath=done ]) wl="$acl_cv_wl" acl_libext="$acl_cv_libext" acl_shlibext="$acl_cv_shlibext" acl_libname_spec="$acl_cv_libname_spec" acl_library_names_spec="$acl_cv_library_names_spec" acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec" acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator" acl_hardcode_direct="$acl_cv_hardcode_direct" acl_hardcode_minus_L="$acl_cv_hardcode_minus_L" dnl Determine whether the user wants rpath handling at all. AC_ARG_ENABLE([rpath], [ --disable-rpath do not hardcode runtime library paths], :, enable_rpath=yes) ]) dnl AC_LIB_FROMPACKAGE(name, package) dnl declares that libname comes from the given package. The configure file dnl will then not have a --with-libname-prefix option but a dnl --with-package-prefix option. Several libraries can come from the same dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar dnl macro call that searches for libname. AC_DEFUN([AC_LIB_FROMPACKAGE], [ pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) define([acl_frompackage_]NAME, [$2]) popdef([NAME]) pushdef([PACK],[$2]) pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) define([acl_libsinpackage_]PACKUP, m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1]) popdef([PACKUP]) popdef([PACK]) ]) dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and dnl the libraries corresponding to explicit and implicit dependencies. dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables. dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem. AC_DEFUN([AC_LIB_LINKFLAGS_BODY], [ AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])]) pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])]) pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])]) dnl By default, look in $includedir and $libdir. use_additional=yes AC_LIB_WITH_FINAL_PREFIX([ eval additional_includedir=\"$includedir\" eval additional_libdir=\"$libdir\" ]) AC_ARG_WITH(PACK[-prefix], [[ --with-]]PACK[[-prefix[=DIR] search for ]PACKLIBS[ in DIR/include and DIR/lib --without-]]PACK[[-prefix don't search for ]PACKLIBS[ in includedir and libdir]], [ if test "X$withval" = "Xno"; then use_additional=no else if test "X$withval" = "X"; then AC_LIB_WITH_FINAL_PREFIX([ eval additional_includedir=\"$includedir\" eval additional_libdir=\"$libdir\" ]) else additional_includedir="$withval/include" additional_libdir="$withval/$acl_libdirstem" if test "$acl_libdirstem2" != "$acl_libdirstem" \ && test ! -d "$withval/$acl_libdirstem"; then additional_libdir="$withval/$acl_libdirstem2" fi fi fi ]) dnl Search the library and its dependencies in $additional_libdir and dnl $LDFLAGS. Using breadth-first-seach. LIB[]NAME= LTLIB[]NAME= INC[]NAME= LIB[]NAME[]_PREFIX= dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been dnl computed. So it has to be reset here. HAVE_LIB[]NAME= rpathdirs= ltrpathdirs= names_already_handled= names_next_round='$1 $2' while test -n "$names_next_round"; do names_this_round="$names_next_round" names_next_round= for name in $names_this_round; do already_handled= for n in $names_already_handled; do if test "$n" = "$name"; then already_handled=yes break fi done if test -z "$already_handled"; then names_already_handled="$names_already_handled $name" dnl See if it was already located by an earlier AC_LIB_LINKFLAGS dnl or AC_LIB_HAVE_LINKFLAGS call. uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'` eval value=\"\$HAVE_LIB$uppername\" if test -n "$value"; then if test "$value" = yes; then eval value=\"\$LIB$uppername\" test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value" eval value=\"\$LTLIB$uppername\" test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value" else dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined dnl that this library doesn't exist. So just drop it. : fi else dnl Search the library lib$name in $additional_libdir and $LDFLAGS dnl and the already constructed $LIBNAME/$LTLIBNAME. found_dir= found_la= found_so= found_a= eval libname=\"$acl_libname_spec\" # typically: libname=lib$name if test -n "$acl_shlibext"; then shrext=".$acl_shlibext" # typically: shrext=.so else shrext= fi if test $use_additional = yes; then dir="$additional_libdir" dnl The same code as in the loop below: dnl First look for a shared library. if test -n "$acl_shlibext"; then if test -f "$dir/$libname$shrext"; then found_dir="$dir" found_so="$dir/$libname$shrext" else if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then ver=`(cd "$dir" && \ for f in "$libname$shrext".*; do echo "$f"; done \ | sed -e "s,^$libname$shrext\\\\.,," \ | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \ | sed 1q ) 2>/dev/null` if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then found_dir="$dir" found_so="$dir/$libname$shrext.$ver" fi else eval library_names=\"$acl_library_names_spec\" for f in $library_names; do if test -f "$dir/$f"; then found_dir="$dir" found_so="$dir/$f" break fi done fi fi fi dnl Then look for a static library. if test "X$found_dir" = "X"; then if test -f "$dir/$libname.$acl_libext"; then found_dir="$dir" found_a="$dir/$libname.$acl_libext" fi fi if test "X$found_dir" != "X"; then if test -f "$dir/$libname.la"; then found_la="$dir/$libname.la" fi fi fi if test "X$found_dir" = "X"; then for x in $LDFLAGS $LTLIB[]NAME; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) case "$x" in -L*) dir=`echo "X$x" | sed -e 's/^X-L//'` dnl First look for a shared library. if test -n "$acl_shlibext"; then if test -f "$dir/$libname$shrext"; then found_dir="$dir" found_so="$dir/$libname$shrext" else if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then ver=`(cd "$dir" && \ for f in "$libname$shrext".*; do echo "$f"; done \ | sed -e "s,^$libname$shrext\\\\.,," \ | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \ | sed 1q ) 2>/dev/null` if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then found_dir="$dir" found_so="$dir/$libname$shrext.$ver" fi else eval library_names=\"$acl_library_names_spec\" for f in $library_names; do if test -f "$dir/$f"; then found_dir="$dir" found_so="$dir/$f" break fi done fi fi fi dnl Then look for a static library. if test "X$found_dir" = "X"; then if test -f "$dir/$libname.$acl_libext"; then found_dir="$dir" found_a="$dir/$libname.$acl_libext" fi fi if test "X$found_dir" != "X"; then if test -f "$dir/$libname.la"; then found_la="$dir/$libname.la" fi fi ;; esac if test "X$found_dir" != "X"; then break fi done fi if test "X$found_dir" != "X"; then dnl Found the library. LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name" if test "X$found_so" != "X"; then dnl Linking with a shared library. We attempt to hardcode its dnl directory into the executable's runpath, unless it's the dnl standard /usr/lib. if test "$enable_rpath" = no \ || test "X$found_dir" = "X/usr/$acl_libdirstem" \ || test "X$found_dir" = "X/usr/$acl_libdirstem2"; then dnl No hardcoding is needed. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" else dnl Use an explicit option to hardcode DIR into the resulting dnl binary. dnl Potentially add DIR to ltrpathdirs. dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. haveit= for x in $ltrpathdirs; do if test "X$x" = "X$found_dir"; then haveit=yes break fi done if test -z "$haveit"; then ltrpathdirs="$ltrpathdirs $found_dir" fi dnl The hardcoding into $LIBNAME is system dependent. if test "$acl_hardcode_direct" = yes; then dnl Using DIR/libNAME.so during linking hardcodes DIR into the dnl resulting binary. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" else if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then dnl Use an explicit option to hardcode DIR into the resulting dnl binary. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" dnl Potentially add DIR to rpathdirs. dnl The rpathdirs will be appended to $LIBNAME at the end. haveit= for x in $rpathdirs; do if test "X$x" = "X$found_dir"; then haveit=yes break fi done if test -z "$haveit"; then rpathdirs="$rpathdirs $found_dir" fi else dnl Rely on "-L$found_dir". dnl But don't add it if it's already contained in the LDFLAGS dnl or the already constructed $LIBNAME haveit= for x in $LDFLAGS $LIB[]NAME; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) if test "X$x" = "X-L$found_dir"; then haveit=yes break fi done if test -z "$haveit"; then LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir" fi if test "$acl_hardcode_minus_L" != no; then dnl FIXME: Not sure whether we should use dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" dnl here. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so" else dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH dnl here, because this doesn't fit in flags passed to the dnl compiler. So give up. No hardcoding. This affects only dnl very old systems. dnl FIXME: Not sure whether we should use dnl "-L$found_dir -l$name" or "-L$found_dir $found_so" dnl here. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" fi fi fi fi else if test "X$found_a" != "X"; then dnl Linking with a static library. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a" else dnl We shouldn't come here, but anyway it's good to have a dnl fallback. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name" fi fi dnl Assume the include files are nearby. additional_includedir= case "$found_dir" in */$acl_libdirstem | */$acl_libdirstem/) basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'` if test "$name" = '$1'; then LIB[]NAME[]_PREFIX="$basedir" fi additional_includedir="$basedir/include" ;; */$acl_libdirstem2 | */$acl_libdirstem2/) basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'` if test "$name" = '$1'; then LIB[]NAME[]_PREFIX="$basedir" fi additional_includedir="$basedir/include" ;; esac if test "X$additional_includedir" != "X"; then dnl Potentially add $additional_includedir to $INCNAME. dnl But don't add it dnl 1. if it's the standard /usr/include, dnl 2. if it's /usr/local/include and we are using GCC on Linux, dnl 3. if it's already present in $CPPFLAGS or the already dnl constructed $INCNAME, dnl 4. if it doesn't exist as a directory. if test "X$additional_includedir" != "X/usr/include"; then haveit= if test "X$additional_includedir" = "X/usr/local/include"; then if test -n "$GCC"; then case $host_os in linux* | gnu* | k*bsd*-gnu) haveit=yes;; esac fi fi if test -z "$haveit"; then for x in $CPPFLAGS $INC[]NAME; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) if test "X$x" = "X-I$additional_includedir"; then haveit=yes break fi done if test -z "$haveit"; then if test -d "$additional_includedir"; then dnl Really add $additional_includedir to $INCNAME. INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir" fi fi fi fi fi dnl Look for dependencies. if test -n "$found_la"; then dnl Read the .la file. It defines the variables dnl dlname, library_names, old_library, dependency_libs, current, dnl age, revision, installed, dlopen, dlpreopen, libdir. save_libdir="$libdir" case "$found_la" in */* | *\\*) . "$found_la" ;; *) . "./$found_la" ;; esac libdir="$save_libdir" dnl We use only dependency_libs. for dep in $dependency_libs; do case "$dep" in -L*) additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'` dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME. dnl But don't add it dnl 1. if it's the standard /usr/lib, dnl 2. if it's /usr/local/lib and we are using GCC on Linux, dnl 3. if it's already present in $LDFLAGS or the already dnl constructed $LIBNAME, dnl 4. if it doesn't exist as a directory. if test "X$additional_libdir" != "X/usr/$acl_libdirstem" \ && test "X$additional_libdir" != "X/usr/$acl_libdirstem2"; then haveit= if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem" \ || test "X$additional_libdir" = "X/usr/local/$acl_libdirstem2"; then if test -n "$GCC"; then case $host_os in linux* | gnu* | k*bsd*-gnu) haveit=yes;; esac fi fi if test -z "$haveit"; then haveit= for x in $LDFLAGS $LIB[]NAME; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) if test "X$x" = "X-L$additional_libdir"; then haveit=yes break fi done if test -z "$haveit"; then if test -d "$additional_libdir"; then dnl Really add $additional_libdir to $LIBNAME. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir" fi fi haveit= for x in $LDFLAGS $LTLIB[]NAME; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) if test "X$x" = "X-L$additional_libdir"; then haveit=yes break fi done if test -z "$haveit"; then if test -d "$additional_libdir"; then dnl Really add $additional_libdir to $LTLIBNAME. LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir" fi fi fi fi ;; -R*) dir=`echo "X$dep" | sed -e 's/^X-R//'` if test "$enable_rpath" != no; then dnl Potentially add DIR to rpathdirs. dnl The rpathdirs will be appended to $LIBNAME at the end. haveit= for x in $rpathdirs; do if test "X$x" = "X$dir"; then haveit=yes break fi done if test -z "$haveit"; then rpathdirs="$rpathdirs $dir" fi dnl Potentially add DIR to ltrpathdirs. dnl The ltrpathdirs will be appended to $LTLIBNAME at the end. haveit= for x in $ltrpathdirs; do if test "X$x" = "X$dir"; then haveit=yes break fi done if test -z "$haveit"; then ltrpathdirs="$ltrpathdirs $dir" fi fi ;; -l*) dnl Handle this in the next round. names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'` ;; *.la) dnl Handle this in the next round. Throw away the .la's dnl directory; it is already contained in a preceding -L dnl option. names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'` ;; *) dnl Most likely an immediate library name. LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep" LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep" ;; esac done fi else dnl Didn't find the library; assume it is in the system directories dnl known to the linker and runtime loader. (All the system dnl directories known to the linker should also be known to the dnl runtime loader, otherwise the system is severely misconfigured.) LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name" LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name" fi fi fi done done if test "X$rpathdirs" != "X"; then if test -n "$acl_hardcode_libdir_separator"; then dnl Weird platform: only the last -rpath option counts, the user must dnl pass all path elements in one option. We can arrange that for a dnl single library, but not when more than one $LIBNAMEs are used. alldirs= for found_dir in $rpathdirs; do alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir" done dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl. acl_save_libdir="$libdir" libdir="$alldirs" eval flag=\"$acl_hardcode_libdir_flag_spec\" libdir="$acl_save_libdir" LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" else dnl The -rpath options are cumulative. for found_dir in $rpathdirs; do acl_save_libdir="$libdir" libdir="$found_dir" eval flag=\"$acl_hardcode_libdir_flag_spec\" libdir="$acl_save_libdir" LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag" done fi fi if test "X$ltrpathdirs" != "X"; then dnl When using libtool, the option that works for both libraries and dnl executables is -R. The -R options are cumulative. for found_dir in $ltrpathdirs; do LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir" done fi popdef([PACKLIBS]) popdef([PACKUP]) popdef([PACK]) popdef([NAME]) ]) dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR, dnl unless already present in VAR. dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes dnl contains two or three consecutive elements that belong together. AC_DEFUN([AC_LIB_APPENDTOVAR], [ for element in [$2]; do haveit= for x in $[$1]; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) if test "X$x" = "X$element"; then haveit=yes break fi done if test -z "$haveit"; then [$1]="${[$1]}${[$1]:+ }$element" fi done ]) dnl For those cases where a variable contains several -L and -l options dnl referring to unknown libraries and directories, this macro determines the dnl necessary additional linker options for the runtime path. dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL]) dnl sets LDADDVAR to linker options needed together with LIBSVALUE. dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed, dnl otherwise linking without libtool is assumed. AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS], [ AC_REQUIRE([AC_LIB_RPATH]) AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) $1= if test "$enable_rpath" != no; then if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then dnl Use an explicit option to hardcode directories into the resulting dnl binary. rpathdirs= next= for opt in $2; do if test -n "$next"; then dir="$next" dnl No need to hardcode the standard /usr/lib. if test "X$dir" != "X/usr/$acl_libdirstem" \ && test "X$dir" != "X/usr/$acl_libdirstem2"; then rpathdirs="$rpathdirs $dir" fi next= else case $opt in -L) next=yes ;; -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'` dnl No need to hardcode the standard /usr/lib. if test "X$dir" != "X/usr/$acl_libdirstem" \ && test "X$dir" != "X/usr/$acl_libdirstem2"; then rpathdirs="$rpathdirs $dir" fi next= ;; *) next= ;; esac fi done if test "X$rpathdirs" != "X"; then if test -n ""$3""; then dnl libtool is used for linking. Use -R options. for dir in $rpathdirs; do $1="${$1}${$1:+ }-R$dir" done else dnl The linker is used for linking directly. if test -n "$acl_hardcode_libdir_separator"; then dnl Weird platform: only the last -rpath option counts, the user dnl must pass all path elements in one option. alldirs= for dir in $rpathdirs; do alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir" done acl_save_libdir="$libdir" libdir="$alldirs" eval flag=\"$acl_hardcode_libdir_flag_spec\" libdir="$acl_save_libdir" $1="$flag" else dnl The -rpath options are cumulative. for dir in $rpathdirs; do acl_save_libdir="$libdir" libdir="$dir" eval flag=\"$acl_hardcode_libdir_flag_spec\" libdir="$acl_save_libdir" $1="${$1}${$1:+ }$flag" done fi fi fi fi fi AC_SUBST([$1]) ]) # lib-prefix.m4 serial 14 dnl Copyright (C) 2001-2005, 2008-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed dnl to access previously installed libraries. The basic assumption is that dnl a user will want packages to use other packages he previously installed dnl with the same --prefix option. dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate dnl libraries, but is otherwise very convenient. AC_DEFUN([AC_LIB_PREFIX], [ AC_BEFORE([$0], [AC_LIB_LINKFLAGS]) AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([AC_LIB_PREPARE_MULTILIB]) AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) dnl By default, look in $includedir and $libdir. use_additional=yes AC_LIB_WITH_FINAL_PREFIX([ eval additional_includedir=\"$includedir\" eval additional_libdir=\"$libdir\" ]) AC_ARG_WITH([lib-prefix], [[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib --without-lib-prefix don't search for libraries in includedir and libdir]], [ if test "X$withval" = "Xno"; then use_additional=no else if test "X$withval" = "X"; then AC_LIB_WITH_FINAL_PREFIX([ eval additional_includedir=\"$includedir\" eval additional_libdir=\"$libdir\" ]) else additional_includedir="$withval/include" additional_libdir="$withval/$acl_libdirstem" fi fi ]) if test $use_additional = yes; then dnl Potentially add $additional_includedir to $CPPFLAGS. dnl But don't add it dnl 1. if it's the standard /usr/include, dnl 2. if it's already present in $CPPFLAGS, dnl 3. if it's /usr/local/include and we are using GCC on Linux, dnl 4. if it doesn't exist as a directory. if test "X$additional_includedir" != "X/usr/include"; then haveit= for x in $CPPFLAGS; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) if test "X$x" = "X-I$additional_includedir"; then haveit=yes break fi done if test -z "$haveit"; then if test "X$additional_includedir" = "X/usr/local/include"; then if test -n "$GCC"; then case $host_os in linux* | gnu* | k*bsd*-gnu) haveit=yes;; esac fi fi if test -z "$haveit"; then if test -d "$additional_includedir"; then dnl Really add $additional_includedir to $CPPFLAGS. CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir" fi fi fi fi dnl Potentially add $additional_libdir to $LDFLAGS. dnl But don't add it dnl 1. if it's the standard /usr/lib, dnl 2. if it's already present in $LDFLAGS, dnl 3. if it's /usr/local/lib and we are using GCC on Linux, dnl 4. if it doesn't exist as a directory. if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then haveit= for x in $LDFLAGS; do AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) if test "X$x" = "X-L$additional_libdir"; then haveit=yes break fi done if test -z "$haveit"; then if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then if test -n "$GCC"; then case $host_os in linux*) haveit=yes;; esac fi fi if test -z "$haveit"; then if test -d "$additional_libdir"; then dnl Really add $additional_libdir to $LDFLAGS. LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir" fi fi fi fi fi ]) dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix, dnl acl_final_exec_prefix, containing the values to which $prefix and dnl $exec_prefix will expand at the end of the configure script. AC_DEFUN([AC_LIB_PREPARE_PREFIX], [ dnl Unfortunately, prefix and exec_prefix get only finally determined dnl at the end of configure. if test "X$prefix" = "XNONE"; then acl_final_prefix="$ac_default_prefix" else acl_final_prefix="$prefix" fi if test "X$exec_prefix" = "XNONE"; then acl_final_exec_prefix='${prefix}' else acl_final_exec_prefix="$exec_prefix" fi acl_save_prefix="$prefix" prefix="$acl_final_prefix" eval acl_final_exec_prefix=\"$acl_final_exec_prefix\" prefix="$acl_save_prefix" ]) dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the dnl variables prefix and exec_prefix bound to the values they will have dnl at the end of the configure script. AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX], [ acl_save_prefix="$prefix" prefix="$acl_final_prefix" acl_save_exec_prefix="$exec_prefix" exec_prefix="$acl_final_exec_prefix" $1 exec_prefix="$acl_save_exec_prefix" prefix="$acl_save_prefix" ]) dnl AC_LIB_PREPARE_MULTILIB creates dnl - a variable acl_libdirstem, containing the basename of the libdir, either dnl "lib" or "lib64" or "lib/64", dnl - a variable acl_libdirstem2, as a secondary possible value for dnl acl_libdirstem, either the same as acl_libdirstem or "lib/sparcv9" or dnl "lib/amd64". AC_DEFUN([AC_LIB_PREPARE_MULTILIB], [ dnl There is no formal standard regarding lib and lib64. dnl On glibc systems, the current practice is that on a system supporting dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under dnl $prefix/lib64 and 32-bit libraries go under $prefix/lib. We determine dnl the compiler's default mode by looking at the compiler's library search dnl path. If at least one of its elements ends in /lib64 or points to a dnl directory whose absolute pathname ends in /lib64, we assume a 64-bit ABI. dnl Otherwise we use the default, namely "lib". dnl On Solaris systems, the current practice is that on a system supporting dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib. AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_HOST_CPU_C_ABI_32BIT]) case "$host_os" in solaris*) AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit], [AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#ifdef _LP64 int ok; #else error fail #endif ]])], [gl_cv_solaris_64bit=yes], [gl_cv_solaris_64bit=no]) ]);; esac dnl Allow the user to override the result by setting acl_cv_libdirstems. AC_CACHE_CHECK([for the common suffixes of directories in the library search path], [acl_cv_libdirstems], [acl_libdirstem=lib acl_libdirstem2= case "$host_os" in solaris*) dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment dnl . dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link." dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the dnl symlink is missing, so we set acl_libdirstem2 too. if test $gl_cv_solaris_64bit = yes; then acl_libdirstem=lib/64 case "$host_cpu" in sparc*) acl_libdirstem2=lib/sparcv9 ;; i*86 | x86_64) acl_libdirstem2=lib/amd64 ;; esac fi ;; *) dnl If $CC generates code for a 32-bit ABI, the libraries are dnl surely under $prefix/lib, not $prefix/lib64. if test "$HOST_CPU_C_ABI_32BIT" != yes; then dnl The result is a property of the system. However, non-system dnl compilers sometimes have odd library search paths. Therefore dnl prefer asking /usr/bin/gcc, if available, rather than $CC. searchpath=`(if test -f /usr/bin/gcc \ && LC_ALL=C /usr/bin/gcc -print-search-dirs >/dev/null 2>/dev/null; then \ LC_ALL=C /usr/bin/gcc -print-search-dirs; \ else \ LC_ALL=C $CC -print-search-dirs; \ fi) 2>/dev/null \ | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'` if test -n "$searchpath"; then acl_save_IFS="${IFS= }"; IFS=":" for searchdir in $searchpath; do if test -d "$searchdir"; then case "$searchdir" in */lib64/ | */lib64 ) acl_libdirstem=lib64 ;; */../ | */.. ) # Better ignore directories of this form. They are misleading. ;; *) searchdir=`cd "$searchdir" && pwd` case "$searchdir" in */lib64 ) acl_libdirstem=lib64 ;; esac ;; esac fi done IFS="$acl_save_IFS" fi fi ;; esac test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem" acl_cv_libdirstems="$acl_libdirstem,$acl_libdirstem2" ]) # Decompose acl_cv_libdirstems into acl_libdirstem and acl_libdirstem2. acl_libdirstem=`echo "$acl_cv_libdirstems" | sed -e 's/,.*//'` acl_libdirstem2=`echo "$acl_cv_libdirstems" | sed -e '/,/s/.*,//'` ]) # nls.m4 serial 5 (gettext-0.18) dnl Copyright (C) 1995-2003, 2005-2006, 2008-2014, 2016, 2019 Free Software dnl Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl dnl This file can be used in projects which are not available under dnl the GNU General Public License or the GNU Library General Public dnl License but which still want to provide support for the GNU gettext dnl functionality. dnl Please note that the actual code of the GNU gettext library is covered dnl by the GNU Library General Public License, and the rest of the GNU dnl gettext package is covered by the GNU General Public License. dnl They are *not* in the public domain. dnl Authors: dnl Ulrich Drepper , 1995-2000. dnl Bruno Haible , 2000-2003. AC_PREREQ([2.50]) AC_DEFUN([AM_NLS], [ AC_MSG_CHECKING([whether NLS is requested]) dnl Default is enabled NLS AC_ARG_ENABLE([nls], [ --disable-nls do not use Native Language Support], USE_NLS=$enableval, USE_NLS=yes) AC_MSG_RESULT([$USE_NLS]) AC_SUBST([USE_NLS]) ]) # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- # serial 12 (pkg-config-0.29.2) dnl Copyright © 2004 Scott James Remnant . dnl Copyright © 2012-2015 Dan Nicholson dnl dnl This program is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by dnl the Free Software Foundation; either version 2 of the License, or dnl (at your option) any later version. dnl dnl This program is distributed in the hope that it will be useful, but dnl WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU dnl General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; if not, write to the Free Software dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA dnl 02111-1307, USA. dnl dnl As a special exception to the GNU General Public License, if you dnl distribute this file as part of a program that contains a dnl configuration script generated by Autoconf, you may include it under dnl the same distribution terms that you use for the rest of that dnl program. dnl PKG_PREREQ(MIN-VERSION) dnl ----------------------- dnl Since: 0.29 dnl dnl Verify that the version of the pkg-config macros are at least dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's dnl installed version of pkg-config, this checks the developer's version dnl of pkg.m4 when generating configure. dnl dnl To ensure that this macro is defined, also add: dnl m4_ifndef([PKG_PREREQ], dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])]) dnl dnl See the "Since" comment for each macro you use to see what version dnl of the macros you require. m4_defun([PKG_PREREQ], [m4_define([PKG_MACROS_VERSION], [0.29.2]) m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1, [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])]) ])dnl PKG_PREREQ dnl PKG_PROG_PKG_CONFIG([MIN-VERSION]) dnl ---------------------------------- dnl Since: 0.16 dnl dnl Search for the pkg-config tool and set the PKG_CONFIG variable to dnl first found in the path. Checks that the version of pkg-config found dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is dnl used since that's the first version where most current features of dnl pkg-config existed. AC_DEFUN([PKG_PROG_PKG_CONFIG], [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) fi if test -n "$PKG_CONFIG"; then _pkg_min_version=m4_default([$1], [0.9.0]) AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) PKG_CONFIG="" fi fi[]dnl ])dnl PKG_PROG_PKG_CONFIG dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) dnl ------------------------------------------------------------------- dnl Since: 0.18 dnl dnl Check to see whether a particular set of modules exists. Similar to dnl PKG_CHECK_MODULES(), but does not set variables or print errors. dnl dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) dnl only at the first occurence in configure.ac, so if the first place dnl it's called might be skipped (such as if it is within an "if", you dnl have to call PKG_CHECK_EXISTS manually AC_DEFUN([PKG_CHECK_EXISTS], [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl if test -n "$PKG_CONFIG" && \ AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then m4_default([$2], [:]) m4_ifvaln([$3], [else $3])dnl fi]) dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) dnl --------------------------------------------- dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting dnl pkg_failed based on the result. m4_define([_PKG_CONFIG], [if test -n "$$1"; then pkg_cv_[]$1="$$1" elif test -n "$PKG_CONFIG"; then PKG_CHECK_EXISTS([$3], [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` test "x$?" != "x0" && pkg_failed=yes ], [pkg_failed=yes]) else pkg_failed=untried fi[]dnl ])dnl _PKG_CONFIG dnl _PKG_SHORT_ERRORS_SUPPORTED dnl --------------------------- dnl Internal check to see if pkg-config supports short errors. AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], [AC_REQUIRE([PKG_PROG_PKG_CONFIG]) if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then _pkg_short_errors_supported=yes else _pkg_short_errors_supported=no fi[]dnl ])dnl _PKG_SHORT_ERRORS_SUPPORTED dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], dnl [ACTION-IF-NOT-FOUND]) dnl -------------------------------------------------------------- dnl Since: 0.4.0 dnl dnl Note that if there is a possibility the first call to dnl PKG_CHECK_MODULES might not happen, you should be sure to include an dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac AC_DEFUN([PKG_CHECK_MODULES], [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl pkg_failed=no AC_MSG_CHECKING([for $2]) _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) _PKG_CONFIG([$1][_LIBS], [libs], [$2]) m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS and $1[]_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.]) if test $pkg_failed = yes; then AC_MSG_RESULT([no]) _PKG_SHORT_ERRORS_SUPPORTED if test $_pkg_short_errors_supported = yes; then $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1` else $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1` fi # Put the nasty error message in config.log where it belongs echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD m4_default([$4], [AC_MSG_ERROR( [Package requirements ($2) were not met: $$1_PKG_ERRORS Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. _PKG_TEXT])[]dnl ]) elif test $pkg_failed = untried; then AC_MSG_RESULT([no]) m4_default([$4], [AC_MSG_FAILURE( [The pkg-config script could not be found or is too old. Make sure it is in your PATH or set the PKG_CONFIG environment variable to the full path to pkg-config. _PKG_TEXT To get pkg-config, see .])[]dnl ]) else $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS $1[]_LIBS=$pkg_cv_[]$1[]_LIBS AC_MSG_RESULT([yes]) $3 fi[]dnl ])dnl PKG_CHECK_MODULES dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], dnl [ACTION-IF-NOT-FOUND]) dnl --------------------------------------------------------------------- dnl Since: 0.29 dnl dnl Checks for existence of MODULES and gathers its build flags with dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags dnl and VARIABLE-PREFIX_LIBS from --libs. dnl dnl Note that if there is a possibility the first call to dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to dnl include an explicit call to PKG_PROG_PKG_CONFIG in your dnl configure.ac. AC_DEFUN([PKG_CHECK_MODULES_STATIC], [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl _save_PKG_CONFIG=$PKG_CONFIG PKG_CONFIG="$PKG_CONFIG --static" PKG_CHECK_MODULES($@) PKG_CONFIG=$_save_PKG_CONFIG[]dnl ])dnl PKG_CHECK_MODULES_STATIC dnl PKG_INSTALLDIR([DIRECTORY]) dnl ------------------------- dnl Since: 0.27 dnl dnl Substitutes the variable pkgconfigdir as the location where a module dnl should install pkg-config .pc files. By default the directory is dnl $libdir/pkgconfig, but the default can be changed by passing dnl DIRECTORY. The user can override through the --with-pkgconfigdir dnl parameter. AC_DEFUN([PKG_INSTALLDIR], [m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) m4_pushdef([pkg_description], [pkg-config installation directory @<:@]pkg_default[@:>@]) AC_ARG_WITH([pkgconfigdir], [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, [with_pkgconfigdir=]pkg_default) AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) m4_popdef([pkg_default]) m4_popdef([pkg_description]) ])dnl PKG_INSTALLDIR dnl PKG_NOARCH_INSTALLDIR([DIRECTORY]) dnl -------------------------------- dnl Since: 0.27 dnl dnl Substitutes the variable noarch_pkgconfigdir as the location where a dnl module should install arch-independent pkg-config .pc files. By dnl default the directory is $datadir/pkgconfig, but the default can be dnl changed by passing DIRECTORY. The user can override through the dnl --with-noarch-pkgconfigdir parameter. AC_DEFUN([PKG_NOARCH_INSTALLDIR], [m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])]) m4_pushdef([pkg_description], [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@]) AC_ARG_WITH([noarch-pkgconfigdir], [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],, [with_noarch_pkgconfigdir=]pkg_default) AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir]) m4_popdef([pkg_default]) m4_popdef([pkg_description]) ])dnl PKG_NOARCH_INSTALLDIR dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) dnl ------------------------------------------- dnl Since: 0.28 dnl dnl Retrieves the value of the pkg-config variable for the given module. AC_DEFUN([PKG_CHECK_VAR], [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl _PKG_CONFIG([$1], [variable="][$3]["], [$2]) AS_VAR_COPY([$1], [pkg_cv_][$1]) AS_VAR_IF([$1], [""], [$5], [$4])dnl ])dnl PKG_CHECK_VAR # po.m4 serial 30 (gettext-0.20) dnl Copyright (C) 1995-2014, 2016, 2018-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl dnl This file can be used in projects which are not available under dnl the GNU General Public License or the GNU Library General Public dnl License but which still want to provide support for the GNU gettext dnl functionality. dnl Please note that the actual code of the GNU gettext library is covered dnl by the GNU Library General Public License, and the rest of the GNU dnl gettext package is covered by the GNU General Public License. dnl They are *not* in the public domain. dnl Authors: dnl Ulrich Drepper , 1995-2000. dnl Bruno Haible , 2000-2003. AC_PREREQ([2.60]) dnl Checks for all prerequisites of the po subdirectory. AC_DEFUN([AM_PO_SUBDIRS], [ AC_REQUIRE([AC_PROG_MAKE_SET])dnl AC_REQUIRE([AC_PROG_INSTALL])dnl AC_REQUIRE([AC_PROG_MKDIR_P])dnl AC_REQUIRE([AC_PROG_SED])dnl AC_REQUIRE([AM_NLS])dnl dnl Release version of the gettext macros. This is used to ensure that dnl the gettext macros and po/Makefile.in.in are in sync. AC_SUBST([GETTEXT_MACRO_VERSION], [0.20]) dnl Perform the following tests also if --disable-nls has been given, dnl because they are needed for "make dist" to work. dnl Search for GNU msgfmt in the PATH. dnl The first test excludes Solaris msgfmt and early GNU msgfmt versions. dnl The second test excludes FreeBSD msgfmt. AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt, [$ac_dir/$ac_word --statistics /dev/null >&]AS_MESSAGE_LOG_FD[ 2>&1 && (if $ac_dir/$ac_word --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)], :) AC_PATH_PROG([GMSGFMT], [gmsgfmt], [$MSGFMT]) dnl Test whether it is GNU msgfmt >= 0.15. changequote(,)dnl case `$GMSGFMT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) GMSGFMT_015=: ;; *) GMSGFMT_015=$GMSGFMT ;; esac changequote([,])dnl AC_SUBST([GMSGFMT_015]) dnl Search for GNU xgettext 0.12 or newer in the PATH. dnl The first test excludes Solaris xgettext and early GNU xgettext versions. dnl The second test excludes FreeBSD xgettext. AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext, [$ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null >&]AS_MESSAGE_LOG_FD[ 2>&1 && (if $ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)], :) dnl Remove leftover from FreeBSD xgettext call. rm -f messages.po dnl Test whether it is GNU xgettext >= 0.15. changequote(,)dnl case `$XGETTEXT --version | sed 1q | sed -e 's,^[^0-9]*,,'` in '' | 0.[0-9] | 0.[0-9].* | 0.1[0-4] | 0.1[0-4].*) XGETTEXT_015=: ;; *) XGETTEXT_015=$XGETTEXT ;; esac changequote([,])dnl AC_SUBST([XGETTEXT_015]) dnl Search for GNU msgmerge 0.11 or newer in the PATH. 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AC_DEFUN([AM_POSTPROCESS_PO_MAKEFILE], [ # When this code is run, in config.status, two variables have already been # set: # - OBSOLETE_ALL_LINGUAS is the value of LINGUAS set in configure.in, # - LINGUAS is the value of the environment variable LINGUAS at configure # time. changequote(,)dnl # Adjust a relative srcdir. ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'` ac_dir_suffix=/`echo "$ac_dir"|sed 's%^\./%%'` ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'` # In autoconf-2.13 it is called $ac_given_srcdir. # In autoconf-2.50 it is called $srcdir. test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir" case "$ac_given_srcdir" in .) top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;; /*) top_srcdir="$ac_given_srcdir" ;; *) top_srcdir="$ac_dots$ac_given_srcdir" ;; esac # Find a way to echo strings without interpreting backslash. if test "X`(echo '\t') 2>/dev/null`" = 'X\t'; then gt_echo='echo' else if test "X`(printf '%s\n' '\t') 2>/dev/null`" = 'X\t'; then gt_echo='printf %s\n' else echo_func () { cat < "$ac_file.tmp" tab=`printf '\t'` if grep -l '@TCLCATALOGS@' "$ac_file" > /dev/null; then # Add dependencies that cannot be formulated as a simple suffix rule. for lang in $ALL_LINGUAS; do frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'` cat >> "$ac_file.tmp" < /dev/null; then # Add dependencies that cannot be formulated as a simple suffix rule. for lang in $ALL_LINGUAS; do frobbedlang=`echo $lang | sed -e 's/_/-/g' -e 's/^sr-CS/sr-SP/' -e 's/@latin$/-Latn/' -e 's/@cyrillic$/-Cyrl/' -e 's/^sr-SP$/sr-SP-Latn/' -e 's/^uz-UZ$/uz-UZ-Latn/'` cat >> "$ac_file.tmp" <> "$ac_file.tmp" <, 1996. 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If, for whatever reason, the override of AC_PROG_CC dnl in zzgnulib.m4 is inactive, use the original ac_compile. m4_define([_AC_CHECK_DECL_BODY], [ ac_save_ac_compile="$ac_compile" if test -n "$ac_compile_for_check_decl"; then ac_compile="$ac_compile_for_check_decl" fi] m4_defn([_AC_CHECK_DECL_BODY])[ ac_compile="$ac_save_ac_compile" ]) # gl_00GNULIB # ----------- # Witness macro that this file has been included. Needed to force # Automake to include this file prior to all other gnulib .m4 files. AC_DEFUN([gl_00GNULIB]) # Test for __inline keyword dnl Copyright 2017-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl___INLINE], [ AC_CACHE_CHECK([whether the compiler supports the __inline keyword], [gl_cv_c___inline], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[typedef int foo_t; static __inline foo_t foo (void) { return 0; }]], [[return foo ();]])], [gl_cv_c___inline=yes], [gl_cv_c___inline=no])]) if test $gl_cv_c___inline = yes; then AC_DEFINE([HAVE___INLINE], [1], [Define to 1 if the compiler supports the keyword '__inline'.]) fi ]) # absolute-header.m4 serial 16 dnl Copyright (C) 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Derek Price. # gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...) # --------------------------------------- # Find the absolute name of a header file, testing first if the header exists. # If the header were sys/inttypes.h, this macro would define # ABSOLUTE_SYS_INTTYPES_H to the '""' quoted absolute name of sys/inttypes.h # in config.h # (e.g. '#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"'). # The three "///" are to pacify Sun C 5.8, which otherwise would say # "warning: #include of /usr/include/... may be non-portable". # Use '""', not '<>', so that the /// cannot be confused with a C99 comment. # Note: This macro assumes that the header file is not empty after # preprocessing, i.e. it does not only define preprocessor macros but also # provides some type/enum definitions or function/variable declarations. AC_DEFUN([gl_ABSOLUTE_HEADER], [AC_REQUIRE([AC_CANONICAL_HOST]) AC_LANG_PREPROC_REQUIRE()dnl dnl FIXME: gl_absolute_header and ac_header_exists must be used unquoted dnl until we can assume autoconf 2.64 or newer. m4_foreach_w([gl_HEADER_NAME], [$1], [AS_VAR_PUSHDEF([gl_absolute_header], [gl_cv_absolute_]m4_defn([gl_HEADER_NAME]))dnl AC_CACHE_CHECK([absolute name of <]m4_defn([gl_HEADER_NAME])[>], m4_defn([gl_absolute_header]), [AS_VAR_PUSHDEF([ac_header_exists], [ac_cv_header_]m4_defn([gl_HEADER_NAME]))dnl AC_CHECK_HEADERS_ONCE(m4_defn([gl_HEADER_NAME]))dnl if test AS_VAR_GET(ac_header_exists) = yes; then gl_ABSOLUTE_HEADER_ONE(m4_defn([gl_HEADER_NAME])) fi AS_VAR_POPDEF([ac_header_exists])dnl ])dnl AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_defn([gl_HEADER_NAME])), ["AS_VAR_GET(gl_absolute_header)"], [Define this to an absolute name of <]m4_defn([gl_HEADER_NAME])[>.]) AS_VAR_POPDEF([gl_absolute_header])dnl ])dnl ])# gl_ABSOLUTE_HEADER # gl_ABSOLUTE_HEADER_ONE(HEADER) # ------------------------------ # Like gl_ABSOLUTE_HEADER, except that: # - it assumes that the header exists, # - it uses the current CPPFLAGS, # - it does not cache the result, # - it is silent. AC_DEFUN([gl_ABSOLUTE_HEADER_ONE], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote([$1])[[>]])]) dnl AIX "xlc -E" and "cc -E" omit #line directives for header files dnl that contain only a #include of other header files and no dnl non-comment tokens of their own. This leads to a failure to dnl detect the absolute name of , , dnl and others. The workaround is to force preservation of comments dnl through option -C. This ensures all necessary #line directives dnl are present. 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AS_VAR_SET([gl_cv_absolute_]AS_TR_SH([[$1]]), [`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD | sed -n "$gl_absolute_header_sed"`]) ]) dnl @synopsis AC_DEFINE_DIR(VARNAME, DIR [, DESCRIPTION]) dnl dnl This macro sets VARNAME to the expansion of the DIR variable, dnl taking care of fixing up ${prefix} and such. dnl dnl VARNAME is then offered as both an output variable and a C dnl preprocessor symbol. dnl dnl Example: dnl dnl AC_DEFINE_DIR([DATADIR], [datadir], [Where data are placed to.]) dnl dnl @category Misc dnl @author Stepan Kasal dnl @author Andreas Schwab dnl @author Guido U. Draheim dnl @author Alexandre Oliva dnl @version 2006-10-13 dnl @license AllPermissive AC_DEFUN([AC_DEFINE_DIR], [ prefix_NONE= exec_prefix_NONE= test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix dnl In Autoconf 2.60, ${datadir} refers to ${datarootdir}, which in turn dnl refers to ${prefix}. Thus we have to use `eval' twice. eval ac_define_dir="\"[$]$2\"" eval ac_define_dir="\"$ac_define_dir\"" AC_SUBST($1, "$ac_define_dir") AC_DEFINE_UNQUOTED($1, "$ac_define_dir", [$3]) test "$prefix_NONE" && prefix=NONE test "$exec_prefix_NONE" && exec_prefix=NONE ]) # alloca.m4 serial 15 dnl Copyright (C) 2002-2004, 2006-2007, 2009-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_ALLOCA], [ AC_REQUIRE([AC_FUNC_ALLOCA]) if test $ac_cv_func_alloca_works = no; then gl_PREREQ_ALLOCA fi # Define an additional variable used in the Makefile substitution. if test $ac_cv_working_alloca_h = yes; then AC_CACHE_CHECK([for alloca as a compiler built-in], [gl_cv_rpl_alloca], [ AC_EGREP_CPP([Need own alloca], [ #if defined __GNUC__ || defined _AIX || defined _MSC_VER Need own alloca #endif ], [gl_cv_rpl_alloca=yes], [gl_cv_rpl_alloca=no]) ]) if test $gl_cv_rpl_alloca = yes; then dnl OK, alloca can be implemented through a compiler built-in. AC_DEFINE([HAVE_ALLOCA], [1], [Define to 1 if you have 'alloca' after including , a header that may be supplied by this distribution.]) ALLOCA_H=alloca.h else dnl alloca exists as a library function, i.e. it is slow and probably dnl a memory leak. Don't define HAVE_ALLOCA in this case. ALLOCA_H= fi else ALLOCA_H=alloca.h fi AC_SUBST([ALLOCA_H]) AM_CONDITIONAL([GL_GENERATE_ALLOCA_H], [test -n "$ALLOCA_H"]) if test $ac_cv_working_alloca_h = yes; then HAVE_ALLOCA_H=1 else HAVE_ALLOCA_H=0 fi AC_SUBST([HAVE_ALLOCA_H]) ]) # Prerequisites of lib/alloca.c. # STACK_DIRECTION is already handled by AC_FUNC_ALLOCA. AC_DEFUN([gl_PREREQ_ALLOCA], [:]) # This works around a bug in autoconf <= 2.68. # See . m4_version_prereq([2.69], [] ,[ # This is taken from the following Autoconf patch: # https://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=6cd9f12520b0d6f76d3230d7565feba1ecf29497 # _AC_LIBOBJ_ALLOCA # ----------------- # Set up the LIBOBJ replacement of 'alloca'. Well, not exactly # AC_LIBOBJ since we actually set the output variable 'ALLOCA'. # Nevertheless, for Automake, AC_LIBSOURCES it. m4_define([_AC_LIBOBJ_ALLOCA], [# The SVR3 libPW and SVR4 libucb both contain incompatible functions # that cause trouble. Some versions do not even contain alloca or # contain a buggy version. If you still want to use their alloca, # use ar to extract alloca.o from them instead of compiling alloca.c. AC_LIBSOURCES(alloca.c) AC_SUBST([ALLOCA], [\${LIBOBJDIR}alloca.$ac_objext])dnl AC_DEFINE(C_ALLOCA, 1, [Define to 1 if using 'alloca.c'.]) AC_CACHE_CHECK(whether 'alloca.c' needs Cray hooks, ac_cv_os_cray, [AC_EGREP_CPP(webecray, [#if defined CRAY && ! defined CRAY2 webecray #else wenotbecray #endif ], ac_cv_os_cray=yes, ac_cv_os_cray=no)]) if test $ac_cv_os_cray = yes; then for ac_func in _getb67 GETB67 getb67; do AC_CHECK_FUNC($ac_func, [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func, [Define to one of '_getb67', 'GETB67', 'getb67' for Cray-2 and Cray-YMP systems. This function is required for 'alloca.c' support on those systems.]) break]) done fi AC_CACHE_CHECK([stack direction for C alloca], [ac_cv_c_stack_direction], [AC_RUN_IFELSE([AC_LANG_SOURCE( [AC_INCLUDES_DEFAULT int find_stack_direction (int *addr, int depth) { int dir, dummy = 0; if (! addr) addr = &dummy; *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1; dir = depth ? find_stack_direction (addr, depth - 1) : 0; return dir + dummy; } int main (int argc, char **argv) { return find_stack_direction (0, argc + !argv + 20) < 0; }])], [ac_cv_c_stack_direction=1], [ac_cv_c_stack_direction=-1], [ac_cv_c_stack_direction=0])]) AH_VERBATIM([STACK_DIRECTION], [/* If using the C implementation of alloca, define if you know the direction of stack growth for your system; otherwise it will be automatically deduced at runtime. STACK_DIRECTION > 0 => grows toward higher addresses STACK_DIRECTION < 0 => grows toward lower addresses STACK_DIRECTION = 0 => direction of growth unknown */ @%:@undef STACK_DIRECTION])dnl AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction) ])# _AC_LIBOBJ_ALLOCA ]) # =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html # =========================================================================== # # SYNOPSIS # # AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT]) # # DESCRIPTION # # Check whether the given FLAG works with the current language's compiler # or gives an error. (Warnings, however, are ignored) # # ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on # success/failure. # # If EXTRA-FLAGS is defined, it is added to the current language's default # flags (e.g. CFLAGS) when the check is done. The check is thus made with # the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to # force the compiler to issue an error when a bad flag is given. # # INPUT gives an alternative input source to AC_COMPILE_IFELSE. # # NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this # macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG. # # LICENSE # # Copyright (c) 2008 Guido U. Draheim # Copyright (c) 2011 Maarten Bosmans # # This program is free software: you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or (at your # option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see . # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Archive. When you make and distribute a # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. #serial 3 AC_DEFUN([AX_CHECK_COMPILE_FLAG], [AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [ ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1" AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])], [AS_VAR_SET(CACHEVAR,[yes])], [AS_VAR_SET(CACHEVAR,[no])]) _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags]) AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes], [m4_default([$2], :)], [m4_default([$3], :)]) AS_VAR_POPDEF([CACHEVAR])dnl ])dnl AX_CHECK_COMPILE_FLAGS # btowc.m4 serial 11 dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_BTOWC], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) dnl Check whether is usable at all, first. Otherwise the test dnl program below may lead to an endless loop. See dnl . AC_REQUIRE([gl_WCHAR_H_INLINE_OK]) AC_CHECK_FUNCS_ONCE([btowc]) if test $ac_cv_func_btowc = no; then HAVE_BTOWC=0 else AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl Cygwin 1.7.2 btowc('\0') is WEOF, not 0. AC_CACHE_CHECK([whether btowc(0) is correct], [gl_cv_func_btowc_nul], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { if (btowc ('\0') != 0) return 1; return 0; }]])], [gl_cv_func_btowc_nul=yes], [gl_cv_func_btowc_nul=no], [ changequote(,)dnl case "$host_os" in # Guess no on Cygwin. cygwin*) gl_cv_func_btowc_nul="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_btowc_nul="guessing yes" ;; # Guess yes otherwise. *) gl_cv_func_btowc_nul="guessing yes" ;; esac changequote([,])dnl ]) ]) dnl IRIX 6.5 btowc(EOF) is 0xFF, not WEOF. AC_CACHE_CHECK([whether btowc(EOF) is correct], [gl_cv_func_btowc_eof], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on IRIX. irix*) gl_cv_func_btowc_eof="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_btowc_eof="guessing yes" ;; # Guess yes otherwise. *) gl_cv_func_btowc_eof="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) { if (btowc (EOF) != WEOF) return 1; } return 0; }]])], [gl_cv_func_btowc_eof=yes], [gl_cv_func_btowc_eof=no], [:]) fi ]) case "$gl_cv_func_btowc_nul" in *yes) ;; *) REPLACE_BTOWC=1 ;; esac case "$gl_cv_func_btowc_eof" in *yes) ;; *) REPLACE_BTOWC=1 ;; esac fi ]) # Prerequisites of lib/btowc.c. AC_DEFUN([gl_PREREQ_BTOWC], [ : ]) dnl Check for __builtin_expect. dnl Copyright 2016-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Paul Eggert. AC_DEFUN([gl___BUILTIN_EXPECT], [ AC_CACHE_CHECK([for __builtin_expect], [gl_cv___builtin_expect], [AC_LINK_IFELSE( [AC_LANG_SOURCE([[ int main (int argc, char **argv) { argc = __builtin_expect (argc, 100); return argv[argc != 100][0]; }]])], [gl_cv___builtin_expect=yes], [AC_LINK_IFELSE( [AC_LANG_SOURCE([[ #include int main (int argc, char **argv) { argc = __builtin_expect (argc, 100); return argv[argc != 100][0]; }]])], [gl_cv___builtin_expect="in "], [gl_cv___builtin_expect=no])])]) if test "$gl_cv___builtin_expect" = yes; then AC_DEFINE([HAVE___BUILTIN_EXPECT], [1]) elif test "$gl_cv___builtin_expect" = "in "; then AC_DEFINE([HAVE___BUILTIN_EXPECT], [2]) fi AH_VERBATIM([HAVE___BUILTIN_EXPECT], [/* Define to 1 if the compiler supports __builtin_expect, and to 2 if does. */ #undef HAVE___BUILTIN_EXPECT #ifndef HAVE___BUILTIN_EXPECT # define __builtin_expect(e, c) (e) #elif HAVE___BUILTIN_EXPECT == 2 # include #endif ]) ]) # clock_time.m4 serial 10 dnl Copyright (C) 2002-2006, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Check for clock_gettime and clock_settime, and set LIB_CLOCK_GETTIME. # For a program named, say foo, you should add a line like the following # in the corresponding Makefile.am file: # foo_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) AC_DEFUN([gl_CLOCK_TIME], [ dnl Persuade glibc and Solaris to declare these functions. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function. # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4. # Save and restore LIBS so e.g., -lrt, isn't added to it. Otherwise, *all* # programs in the package would end up linked with that potentially-shared # library, inducing unnecessary run-time overhead. LIB_CLOCK_GETTIME= AC_SUBST([LIB_CLOCK_GETTIME]) gl_saved_libs=$LIBS AC_SEARCH_LIBS([clock_gettime], [rt posix4], [test "$ac_cv_search_clock_gettime" = "none required" || LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime]) AC_CHECK_FUNCS([clock_gettime clock_settime]) LIBS=$gl_saved_libs ]) # closedir.m4 serial 6 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_CLOSEDIR], [ AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_FUNCS([closedir]) if test $ac_cv_func_closedir = no; then HAVE_CLOSEDIR=0 fi dnl Replace closedir() for supporting the gnulib-defined fchdir() function, dnl to keep fchdir's bookkeeping up-to-date. m4_ifdef([gl_FUNC_FCHDIR], [ gl_TEST_FCHDIR if test $HAVE_FCHDIR = 0; then if test $HAVE_CLOSEDIR = 1; then REPLACE_CLOSEDIR=1 fi fi ]) dnl Replace closedir() for supporting the gnulib-defined dirfd() function. case $host_os,$HAVE_CLOSEDIR in os2*,1) REPLACE_CLOSEDIR=1;; esac ]) # codeset.m4 serial 5 (gettext-0.18.2) dnl Copyright (C) 2000-2002, 2006, 2008-2014, 2016, 2019-2020 Free Software dnl Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_DEFUN([AM_LANGINFO_CODESET], [ AC_CACHE_CHECK([for nl_langinfo and CODESET], [am_cv_langinfo_codeset], [AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[char* cs = nl_langinfo(CODESET); return !cs;]])], [am_cv_langinfo_codeset=yes], [am_cv_langinfo_codeset=no]) ]) if test $am_cv_langinfo_codeset = yes; then AC_DEFINE([HAVE_LANGINFO_CODESET], [1], [Define if you have and nl_langinfo(CODESET).]) fi ]) # ctype_h.m4 serial 6 dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_CTYPE_H], [ AC_REQUIRE([gl_CTYPE_H_DEFAULTS]) dnl is always overridden, because of GNULIB_POSIXCHECK. gl_NEXT_HEADERS([ctype.h]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [isblank]) ]) AC_DEFUN([gl_CTYPE_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_CTYPE_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) ]) AC_DEFUN([gl_CTYPE_H_DEFAULTS], [ GNULIB_ISBLANK=0; AC_SUBST([GNULIB_ISBLANK]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_ISBLANK=1; AC_SUBST([HAVE_ISBLANK]) ]) # serial 12 dnl From Jim Meyering. dnl dnl Check whether struct dirent has a member named d_type. dnl # Copyright (C) 1997, 1999-2004, 2006, 2009-2020 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE], [AC_CACHE_CHECK([for d_type member in directory struct], [gl_cv_struct_dirent_d_type], [AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include ]], [[struct dirent dp; dp.d_type = 0;]])], [gl_cv_struct_dirent_d_type=yes], [gl_cv_struct_dirent_d_type=no]) ] ) if test $gl_cv_struct_dirent_d_type = yes; then AC_DEFINE([HAVE_STRUCT_DIRENT_D_TYPE], [1], [Define if there is a member named d_type in the struct describing directory headers.]) fi ] ) # dirent_h.m4 serial 16 dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Bruno Haible. AC_DEFUN([gl_DIRENT_H], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) dnl is always overridden, because of GNULIB_POSIXCHECK. gl_CHECK_NEXT_HEADERS([dirent.h]) if test $ac_cv_header_dirent_h = yes; then HAVE_DIRENT_H=1 else HAVE_DIRENT_H=0 fi AC_SUBST([HAVE_DIRENT_H]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [alphasort closedir dirfd fdopendir opendir readdir rewinddir scandir]) ]) AC_DEFUN([gl_DIRENT_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_DIRENT_H_DEFAULTS], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl for REPLACE_FCHDIR GNULIB_OPENDIR=0; AC_SUBST([GNULIB_OPENDIR]) GNULIB_READDIR=0; AC_SUBST([GNULIB_READDIR]) GNULIB_REWINDDIR=0; AC_SUBST([GNULIB_REWINDDIR]) GNULIB_CLOSEDIR=0; AC_SUBST([GNULIB_CLOSEDIR]) GNULIB_DIRFD=0; AC_SUBST([GNULIB_DIRFD]) GNULIB_FDOPENDIR=0; AC_SUBST([GNULIB_FDOPENDIR]) GNULIB_SCANDIR=0; AC_SUBST([GNULIB_SCANDIR]) GNULIB_ALPHASORT=0; AC_SUBST([GNULIB_ALPHASORT]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_OPENDIR=1; AC_SUBST([HAVE_OPENDIR]) HAVE_READDIR=1; AC_SUBST([HAVE_READDIR]) HAVE_REWINDDIR=1; AC_SUBST([HAVE_REWINDDIR]) HAVE_CLOSEDIR=1; AC_SUBST([HAVE_CLOSEDIR]) HAVE_DECL_DIRFD=1; AC_SUBST([HAVE_DECL_DIRFD]) HAVE_DECL_FDOPENDIR=1;AC_SUBST([HAVE_DECL_FDOPENDIR]) HAVE_FDOPENDIR=1; AC_SUBST([HAVE_FDOPENDIR]) HAVE_SCANDIR=1; AC_SUBST([HAVE_SCANDIR]) HAVE_ALPHASORT=1; AC_SUBST([HAVE_ALPHASORT]) REPLACE_OPENDIR=0; AC_SUBST([REPLACE_OPENDIR]) REPLACE_CLOSEDIR=0; AC_SUBST([REPLACE_CLOSEDIR]) REPLACE_DIRFD=0; AC_SUBST([REPLACE_DIRFD]) REPLACE_FDOPENDIR=0; AC_SUBST([REPLACE_FDOPENDIR]) ]) # serial 26 -*- Autoconf -*- dnl Find out how to get the file descriptor associated with an open DIR*. # Copyright (C) 2001-2006, 2008-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. dnl From Jim Meyering AC_DEFUN([gl_FUNC_DIRFD], [ AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl Persuade glibc to declare dirfd(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS([dirfd]) AC_CHECK_DECLS([dirfd], , , [[#include #include ]]) if test $ac_cv_have_decl_dirfd = no; then HAVE_DECL_DIRFD=0 fi AC_CACHE_CHECK([whether dirfd is a macro], [gl_cv_func_dirfd_macro], [AC_EGREP_CPP([dirent_header_defines_dirfd], [ #include #include #ifdef dirfd dirent_header_defines_dirfd #endif], [gl_cv_func_dirfd_macro=yes], [gl_cv_func_dirfd_macro=no])]) # Use the replacement if we have no function or macro with that name, # or if OS/2 kLIBC whose dirfd() does not work. # Replace only if the system declares dirfd already. case $ac_cv_func_dirfd,$gl_cv_func_dirfd_macro,$host_os,$ac_cv_have_decl_dirfd in no,no,*,yes | *,*,os2*,yes) REPLACE_DIRFD=1 AC_DEFINE([REPLACE_DIRFD], [1], [Define to 1 if gnulib's dirfd() replacement is used.]);; esac ]) dnl Prerequisites of lib/dirfd.c. AC_DEFUN([gl_PREREQ_DIRFD], [ AC_CACHE_CHECK([how to get the file descriptor associated with an open DIR*], [gl_cv_sys_dir_fd_member_name], [ dirfd_save_CFLAGS=$CFLAGS for ac_expr in d_fd dd_fd; do CFLAGS="$CFLAGS -DDIR_FD_MEMBER_NAME=$ac_expr" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include #include ]], [[DIR *dir_p = opendir("."); (void) dir_p->DIR_FD_MEMBER_NAME;]])], [dir_fd_found=yes] ) CFLAGS=$dirfd_save_CFLAGS test "$dir_fd_found" = yes && break done test "$dir_fd_found" = yes || ac_expr=no_such_member gl_cv_sys_dir_fd_member_name=$ac_expr ] ) if test $gl_cv_sys_dir_fd_member_name != no_such_member; then AC_DEFINE_UNQUOTED([DIR_FD_MEMBER_NAME], [$gl_cv_sys_dir_fd_member_name], [the name of the file descriptor member of DIR]) fi AH_VERBATIM([DIR_TO_FD], [#ifdef DIR_FD_MEMBER_NAME # define DIR_TO_FD(Dir_p) ((Dir_p)->DIR_FD_MEMBER_NAME) #else # define DIR_TO_FD(Dir_p) -1 #endif ]) ]) # eealloc.m4 serial 3 dnl Copyright (C) 2003, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_EEALLOC], [ AC_REQUIRE([gl_EEMALLOC]) AC_REQUIRE([gl_EEREALLOC]) ]) AC_DEFUN([gl_EEMALLOC], [ _AC_FUNC_MALLOC_IF( [gl_cv_func_malloc_0_nonnull=1], [gl_cv_func_malloc_0_nonnull=0]) AC_DEFINE_UNQUOTED([MALLOC_0_IS_NONNULL], [$gl_cv_func_malloc_0_nonnull], [If malloc(0) is != NULL, define this to 1. Otherwise define this to 0.]) ]) AC_DEFUN([gl_EEREALLOC], [ _AC_FUNC_REALLOC_IF( [gl_cv_func_realloc_0_nonnull=1], [gl_cv_func_realloc_0_nonnull=0]) AC_DEFINE_UNQUOTED([REALLOC_0_IS_NONNULL], [$gl_cv_func_realloc_0_nonnull], [If realloc(NULL,0) is != NULL, define this to 1. Otherwise define this to 0.]) ]) # errno_h.m4 serial 13 dnl Copyright (C) 2004, 2006, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_PREREQ([2.61]) AC_DEFUN_ONCE([gl_HEADER_ERRNO_H], [ AC_REQUIRE([AC_PROG_CC]) AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [ AC_EGREP_CPP([booboo],[ #include #if !defined ETXTBSY booboo #endif #if !defined ENOMSG booboo #endif #if !defined EIDRM booboo #endif #if !defined ENOLINK booboo #endif #if !defined EPROTO booboo #endif #if !defined EMULTIHOP booboo #endif #if !defined EBADMSG booboo #endif #if !defined EOVERFLOW booboo #endif #if !defined ENOTSUP booboo #endif #if !defined ENETRESET booboo #endif #if !defined ECONNABORTED booboo #endif #if !defined ESTALE booboo #endif #if !defined EDQUOT booboo #endif #if !defined ECANCELED booboo #endif #if !defined EOWNERDEAD booboo #endif #if !defined ENOTRECOVERABLE booboo #endif #if !defined EILSEQ booboo #endif ], [gl_cv_header_errno_h_complete=no], [gl_cv_header_errno_h_complete=yes]) ]) if test $gl_cv_header_errno_h_complete = yes; then ERRNO_H='' else gl_NEXT_HEADERS([errno.h]) ERRNO_H='errno.h' fi AC_SUBST([ERRNO_H]) AM_CONDITIONAL([GL_GENERATE_ERRNO_H], [test -n "$ERRNO_H"]) gl_REPLACE_ERRNO_VALUE([EMULTIHOP]) gl_REPLACE_ERRNO_VALUE([ENOLINK]) gl_REPLACE_ERRNO_VALUE([EOVERFLOW]) ]) # Assuming $1 = EOVERFLOW. # The EOVERFLOW errno value ought to be defined in , according to # POSIX. But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and # some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined. # Check for the value of EOVERFLOW. # Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE. AC_DEFUN([gl_REPLACE_ERRNO_VALUE], [ if test -n "$ERRNO_H"; then AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [ AC_EGREP_CPP([yes],[ #include #ifdef ]$1[ yes #endif ], [gl_cv_header_errno_h_]$1[=yes], [gl_cv_header_errno_h_]$1[=no]) if test $gl_cv_header_errno_h_]$1[ = no; then AC_EGREP_CPP([yes],[ #define _XOPEN_SOURCE_EXTENDED 1 #include #ifdef ]$1[ yes #endif ], [gl_cv_header_errno_h_]$1[=hidden]) if test $gl_cv_header_errno_h_]$1[ = hidden; then dnl The macro exists but is hidden. dnl Define it to the same value. AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [ #define _XOPEN_SOURCE_EXTENDED 1 #include /* The following two lines are a workaround against an autoconf-2.52 bug. */ #include #include ]) fi fi ]) case $gl_cv_header_errno_h_]$1[ in yes | no) ]$1[_HIDDEN=0; ]$1[_VALUE= ;; *) ]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1[" ;; esac AC_SUBST($1[_HIDDEN]) AC_SUBST($1[_VALUE]) fi ]) # exponentd.m4 serial 3 dnl Copyright (C) 2007-2008, 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_DOUBLE_EXPONENT_LOCATION], [ AC_CACHE_CHECK([where to find the exponent in a 'double'], [gl_cv_cc_double_expbit0], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #include #define NWORDS \ ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) typedef union { double value; unsigned int word[NWORDS]; } memory_double; static unsigned int ored_words[NWORDS]; static unsigned int anded_words[NWORDS]; static void add_to_ored_words (double x) { memory_double m; size_t i; /* Clear it first, in case sizeof (double) < sizeof (memory_double). */ memset (&m, 0, sizeof (memory_double)); m.value = x; for (i = 0; i < NWORDS; i++) { ored_words[i] |= m.word[i]; anded_words[i] &= m.word[i]; } } int main () { size_t j; FILE *fp = fopen ("conftest.out", "w"); if (fp == NULL) return 1; for (j = 0; j < NWORDS; j++) anded_words[j] = ~ (unsigned int) 0; add_to_ored_words (0.25); add_to_ored_words (0.5); add_to_ored_words (1.0); add_to_ored_words (2.0); add_to_ored_words (4.0); /* Remove bits that are common (e.g. if representation of the first mantissa bit is explicit). */ for (j = 0; j < NWORDS; j++) ored_words[j] &= ~anded_words[j]; /* Now find the nonzero word. */ for (j = 0; j < NWORDS; j++) if (ored_words[j] != 0) break; if (j < NWORDS) { size_t i; for (i = j + 1; i < NWORDS; i++) if (ored_words[i] != 0) { fprintf (fp, "unknown"); return (fclose (fp) != 0); } for (i = 0; ; i++) if ((ored_words[j] >> i) & 1) { fprintf (fp, "word %d bit %d", (int) j, (int) i); return (fclose (fp) != 0); } } fprintf (fp, "unknown"); return (fclose (fp) != 0); } ]])], [gl_cv_cc_double_expbit0=`cat conftest.out`], [gl_cv_cc_double_expbit0="unknown"], [ dnl On ARM, there are two 'double' floating-point formats, used by dnl different sets of instructions: The older FPA instructions assume dnl that they are stored in big-endian word order, while the words dnl (like integer types) are stored in little-endian byte order. dnl The newer VFP instructions assume little-endian order dnl consistently. AC_EGREP_CPP([mixed_endianness], [ #if defined arm || defined __arm || defined __arm__ mixed_endianness #endif ], [gl_cv_cc_double_expbit0="unknown"], [ pushdef([AC_MSG_CHECKING],[:])dnl pushdef([AC_MSG_RESULT],[:])dnl pushdef([AC_MSG_RESULT_UNQUOTED],[:])dnl AC_C_BIGENDIAN( [gl_cv_cc_double_expbit0="word 0 bit 20"], [gl_cv_cc_double_expbit0="word 1 bit 20"], [gl_cv_cc_double_expbit0="unknown"]) popdef([AC_MSG_RESULT_UNQUOTED])dnl popdef([AC_MSG_RESULT])dnl popdef([AC_MSG_CHECKING])dnl ]) ]) rm -f conftest.out ]) case "$gl_cv_cc_double_expbit0" in word*bit*) word=`echo "$gl_cv_cc_double_expbit0" | sed -e 's/word //' -e 's/ bit.*//'` bit=`echo "$gl_cv_cc_double_expbit0" | sed -e 's/word.*bit //'` AC_DEFINE_UNQUOTED([DBL_EXPBIT0_WORD], [$word], [Define as the word index where to find the exponent of 'double'.]) AC_DEFINE_UNQUOTED([DBL_EXPBIT0_BIT], [$bit], [Define as the bit index in the word where to find bit 0 of the exponent of 'double'.]) ;; esac ]) # exponentf.m4 serial 2 dnl Copyright (C) 2007-2008, 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FLOAT_EXPONENT_LOCATION], [ AC_CACHE_CHECK([where to find the exponent in a 'float'], [gl_cv_cc_float_expbit0], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #include #define NWORDS \ ((sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) typedef union { float value; unsigned int word[NWORDS]; } memory_float; static unsigned int ored_words[NWORDS]; static unsigned int anded_words[NWORDS]; static void add_to_ored_words (float x) { memory_float m; size_t i; /* Clear it first, in case sizeof (float) < sizeof (memory_float). */ memset (&m, 0, sizeof (memory_float)); m.value = x; for (i = 0; i < NWORDS; i++) { ored_words[i] |= m.word[i]; anded_words[i] &= m.word[i]; } } int main () { size_t j; FILE *fp = fopen ("conftest.out", "w"); if (fp == NULL) return 1; for (j = 0; j < NWORDS; j++) anded_words[j] = ~ (unsigned int) 0; add_to_ored_words (0.25f); add_to_ored_words (0.5f); add_to_ored_words (1.0f); add_to_ored_words (2.0f); add_to_ored_words (4.0f); /* Remove bits that are common (e.g. if representation of the first mantissa bit is explicit). */ for (j = 0; j < NWORDS; j++) ored_words[j] &= ~anded_words[j]; /* Now find the nonzero word. */ for (j = 0; j < NWORDS; j++) if (ored_words[j] != 0) break; if (j < NWORDS) { size_t i; for (i = j + 1; i < NWORDS; i++) if (ored_words[i] != 0) { fprintf (fp, "unknown"); return (fclose (fp) != 0); } for (i = 0; ; i++) if ((ored_words[j] >> i) & 1) { fprintf (fp, "word %d bit %d", (int) j, (int) i); return (fclose (fp) != 0); } } fprintf (fp, "unknown"); return (fclose (fp) != 0); } ]])], [gl_cv_cc_float_expbit0=`cat conftest.out`], [gl_cv_cc_float_expbit0="unknown"], [gl_cv_cc_float_expbit0="word 0 bit 23"]) rm -f conftest.out ]) case "$gl_cv_cc_float_expbit0" in word*bit*) word=`echo "$gl_cv_cc_float_expbit0" | sed -e 's/word //' -e 's/ bit.*//'` bit=`echo "$gl_cv_cc_float_expbit0" | sed -e 's/word.*bit //'` AC_DEFINE_UNQUOTED([FLT_EXPBIT0_WORD], [$word], [Define as the word index where to find the exponent of 'float'.]) AC_DEFINE_UNQUOTED([FLT_EXPBIT0_BIT], [$bit], [Define as the bit index in the word where to find bit 0 of the exponent of 'float'.]) ;; esac ]) # exponentl.m4 serial 4 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_LONG_DOUBLE_EXPONENT_LOCATION], [ AC_REQUIRE([gl_BIGENDIAN]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([where to find the exponent in a 'long double'], [gl_cv_cc_long_double_expbit0], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #include #define NWORDS \ ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double; static unsigned int ored_words[NWORDS]; static unsigned int anded_words[NWORDS]; static void add_to_ored_words (long double x) { memory_long_double m; size_t i; /* Clear it first, in case sizeof (long double) < sizeof (memory_long_double). */ memset (&m, 0, sizeof (memory_long_double)); m.value = x; for (i = 0; i < NWORDS; i++) { ored_words[i] |= m.word[i]; anded_words[i] &= m.word[i]; } } int main () { size_t j; FILE *fp = fopen ("conftest.out", "w"); if (fp == NULL) return 1; for (j = 0; j < NWORDS; j++) anded_words[j] = ~ (unsigned int) 0; add_to_ored_words (0.25L); add_to_ored_words (0.5L); add_to_ored_words (1.0L); add_to_ored_words (2.0L); add_to_ored_words (4.0L); /* Remove bits that are common (e.g. if representation of the first mantissa bit is explicit). */ for (j = 0; j < NWORDS; j++) ored_words[j] &= ~anded_words[j]; /* Now find the nonzero word. */ for (j = 0; j < NWORDS; j++) if (ored_words[j] != 0) break; if (j < NWORDS) { size_t i; for (i = j + 1; i < NWORDS; i++) if (ored_words[i] != 0) { fprintf (fp, "unknown"); return (fclose (fp) != 0); } for (i = 0; ; i++) if ((ored_words[j] >> i) & 1) { fprintf (fp, "word %d bit %d", (int) j, (int) i); return (fclose (fp) != 0); } } fprintf (fp, "unknown"); return (fclose (fp) != 0); } ]])], [gl_cv_cc_long_double_expbit0=`cat conftest.out`], [gl_cv_cc_long_double_expbit0="unknown"], [ dnl When cross-compiling, in general we don't know. It depends on the dnl ABI and compiler version. There are too many cases. gl_cv_cc_long_double_expbit0="unknown" case "$host_os" in mingw*) # On native Windows (little-endian), we know the result # in two cases: mingw, MSVC. AC_EGREP_CPP([Known], [ #ifdef __MINGW32__ Known #endif ], [gl_cv_cc_long_double_expbit0="word 2 bit 0"]) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif ], [gl_cv_cc_long_double_expbit0="word 1 bit 20"]) ;; esac ]) rm -f conftest.out ]) case "$gl_cv_cc_long_double_expbit0" in word*bit*) word=`echo "$gl_cv_cc_long_double_expbit0" | sed -e 's/word //' -e 's/ bit.*//'` bit=`echo "$gl_cv_cc_long_double_expbit0" | sed -e 's/word.*bit //'` AC_DEFINE_UNQUOTED([LDBL_EXPBIT0_WORD], [$word], [Define as the word index where to find the exponent of 'long double'.]) AC_DEFINE_UNQUOTED([LDBL_EXPBIT0_BIT], [$bit], [Define as the bit index in the word where to find bit 0 of the exponent of 'long double'.]) ;; esac ]) # serial 18 -*- Autoconf -*- # Enable extensions on systems that normally disable them. # Copyright (C) 2003, 2006-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from git # Autoconf. Perhaps we can remove this once we can assume Autoconf # 2.70 or later everywhere, but since Autoconf mutates rapidly # enough in this area it's likely we'll need to redefine # AC_USE_SYSTEM_EXTENSIONS for quite some time. # If autoconf reports a warning # warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS # or warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS # the fix is # 1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked # but always AC_REQUIREd, # 2) to ensure that for each occurrence of # AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) # or # AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) # the corresponding gnulib module description has 'extensions' among # its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS # invocation occurs in gl_EARLY, not in gl_INIT. # AC_USE_SYSTEM_EXTENSIONS # ------------------------ # Enable extensions on systems that normally disable them, # typically due to standards-conformance issues. # # Remember that #undef in AH_VERBATIM gets replaced with #define by # AC_DEFINE. The goal here is to define all known feature-enabling # macros, then, if reports of conflicts are made, disable macros that # cause problems on some platforms (such as __EXTENSIONS__). AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS], [AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl AC_BEFORE([$0], [AC_RUN_IFELSE])dnl AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=]) if test "$MINIX" = yes; then AC_DEFINE([_POSIX_SOURCE], [1], [Define to 1 if you need to in order for 'stat' and other things to work.]) AC_DEFINE([_POSIX_1_SOURCE], [2], [Define to 2 if the system does not provide POSIX.1 features except with this defined.]) AC_DEFINE([_MINIX], [1], [Define to 1 if on MINIX.]) AC_DEFINE([_NETBSD_SOURCE], [1], [Define to 1 to make NetBSD features available. MINIX 3 needs this.]) fi dnl Use a different key than __EXTENSIONS__, as that name broke existing dnl configure.ac when using autoheader 2.62. AH_VERBATIM([USE_SYSTEM_EXTENSIONS], [/* Enable extensions on AIX 3, Interix. */ #ifndef _ALL_SOURCE # undef _ALL_SOURCE #endif /* Enable general extensions on macOS. */ #ifndef _DARWIN_C_SOURCE # undef _DARWIN_C_SOURCE #endif /* Enable GNU extensions on systems that have them. */ #ifndef _GNU_SOURCE # undef _GNU_SOURCE #endif /* Enable NetBSD extensions on NetBSD. */ #ifndef _NETBSD_SOURCE # undef _NETBSD_SOURCE #endif /* Enable OpenBSD extensions on NetBSD. */ #ifndef _OPENBSD_SOURCE # undef _OPENBSD_SOURCE #endif /* Enable threading extensions on Solaris. */ #ifndef _POSIX_PTHREAD_SEMANTICS # undef _POSIX_PTHREAD_SEMANTICS #endif /* Enable extensions specified by ISO/IEC TS 18661-5:2014. */ #ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ # undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ #endif /* Enable extensions specified by ISO/IEC TS 18661-1:2014. */ #ifndef __STDC_WANT_IEC_60559_BFP_EXT__ # undef __STDC_WANT_IEC_60559_BFP_EXT__ #endif /* Enable extensions specified by ISO/IEC TS 18661-2:2015. */ #ifndef __STDC_WANT_IEC_60559_DFP_EXT__ # undef __STDC_WANT_IEC_60559_DFP_EXT__ #endif /* Enable extensions specified by ISO/IEC TS 18661-4:2015. */ #ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__ # undef __STDC_WANT_IEC_60559_FUNCS_EXT__ #endif /* Enable extensions specified by ISO/IEC TS 18661-3:2015. */ #ifndef __STDC_WANT_IEC_60559_TYPES_EXT__ # undef __STDC_WANT_IEC_60559_TYPES_EXT__ #endif /* Enable extensions specified by ISO/IEC TR 24731-2:2010. */ #ifndef __STDC_WANT_LIB_EXT2__ # undef __STDC_WANT_LIB_EXT2__ #endif /* Enable extensions specified by ISO/IEC 24747:2009. */ #ifndef __STDC_WANT_MATH_SPEC_FUNCS__ # undef __STDC_WANT_MATH_SPEC_FUNCS__ #endif /* Enable extensions on HP NonStop. */ #ifndef _TANDEM_SOURCE # undef _TANDEM_SOURCE #endif /* Enable X/Open extensions if necessary. HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to 500, regardless of whether compiling with -Ae or -D_HPUX_SOURCE=1. */ #ifndef _XOPEN_SOURCE # undef _XOPEN_SOURCE #endif /* Enable X/Open compliant socket functions that do not require linking with -lxnet on HP-UX 11.11. */ #ifndef _HPUX_ALT_XOPEN_SOCKET_API # undef _HPUX_ALT_XOPEN_SOCKET_API #endif /* Enable general extensions on Solaris. */ #ifndef __EXTENSIONS__ # undef __EXTENSIONS__ #endif ]) AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__], [ac_cv_safe_to_define___extensions__], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ # define __EXTENSIONS__ 1 ]AC_INCLUDES_DEFAULT])], [ac_cv_safe_to_define___extensions__=yes], [ac_cv_safe_to_define___extensions__=no])]) test $ac_cv_safe_to_define___extensions__ = yes && AC_DEFINE([__EXTENSIONS__]) AC_DEFINE([_ALL_SOURCE]) AC_DEFINE([_DARWIN_C_SOURCE]) AC_DEFINE([_GNU_SOURCE]) AC_DEFINE([_NETBSD_SOURCE]) AC_DEFINE([_OPENBSD_SOURCE]) AC_DEFINE([_POSIX_PTHREAD_SEMANTICS]) AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__]) AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__]) AC_DEFINE([__STDC_WANT_IEC_60559_DFP_EXT__]) AC_DEFINE([__STDC_WANT_IEC_60559_FUNCS_EXT__]) AC_DEFINE([__STDC_WANT_IEC_60559_TYPES_EXT__]) AC_DEFINE([__STDC_WANT_LIB_EXT2__]) AC_DEFINE([__STDC_WANT_MATH_SPEC_FUNCS__]) AC_DEFINE([_TANDEM_SOURCE]) AC_CACHE_CHECK([whether _XOPEN_SOURCE should be defined], [ac_cv_should_define__xopen_source], [ac_cv_should_define__xopen_source=no AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ #include mbstate_t x;]])], [], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ #define _XOPEN_SOURCE 500 #include mbstate_t x;]])], [ac_cv_should_define__xopen_source=yes])])]) test $ac_cv_should_define__xopen_source = yes && AC_DEFINE([_XOPEN_SOURCE], [500]) AC_DEFINE([_HPUX_ALT_XOPEN_SOCKET_API]) ])# AC_USE_SYSTEM_EXTENSIONS # gl_USE_SYSTEM_EXTENSIONS # ------------------------ # Enable extensions on systems that normally disable them, # typically due to standards-conformance issues. AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS], [ dnl Require this macro before AC_USE_SYSTEM_EXTENSIONS. dnl gnulib does not need it. But if it gets required by third-party macros dnl after AC_USE_SYSTEM_EXTENSIONS is required, autoconf 2.62..2.63 emit a dnl warning: "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS". dnl Note: We can do this only for one of the macros AC_AIX, AC_GNU_SOURCE, dnl AC_MINIX. If people still use AC_AIX or AC_MINIX, they are out of luck. AC_REQUIRE([AC_GNU_SOURCE]) AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) ]) dnl 'extern inline' a la ISO C99. dnl Copyright 2012-2013 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_EXTERN_INLINE], [ AH_VERBATIM([extern_inline], [/* Please see the Gnulib manual for how to use these macros. Suppress extern inline with HP-UX cc, as it appears to be broken; see . Suppress extern inline with Sun C in standards-conformance mode, as it mishandles inline functions that call each other. E.g., for 'inline void f (void) { } inline void g (void) { f (); }', c99 incorrectly complains 'reference to static identifier "f" in extern inline function'. This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16. Suppress the use of extern inline on Apple's platforms, as Libc at least through Libc-825.26 (2013-04-09) is incompatible with it; see, e.g., . Perhaps Apple will fix this some day. */ #if ((__GNUC__ \ ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ : (199901L <= __STDC_VERSION__ \ && !defined __HP_cc \ && !(defined __SUNPRO_C && __STDC__))) \ && !defined __APPLE__) # define _GL_INLINE inline # define _GL_EXTERN_INLINE extern inline #elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \ && !defined __APPLE__) # if __GNUC_GNU_INLINE__ /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */ # define _GL_INLINE extern inline __attribute__ ((__gnu_inline__)) # else # define _GL_INLINE extern inline # endif # define _GL_EXTERN_INLINE extern #else # define _GL_INLINE static _GL_UNUSED # define _GL_EXTERN_INLINE static _GL_UNUSED #endif #if 4 < __GNUC__ + (6 <= __GNUC_MINOR__) # if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ # define _GL_INLINE_HEADER_CONST_PRAGMA # else # define _GL_INLINE_HEADER_CONST_PRAGMA \ _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"") # endif /* Suppress GCC's bogus "no previous prototype for 'FOO'" and "no previous declaration for 'FOO'" diagnostics, when FOO is an inline function in the header; see . */ # define _GL_INLINE_HEADER_BEGIN \ _Pragma ("GCC diagnostic push") \ _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \ _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \ _GL_INLINE_HEADER_CONST_PRAGMA # define _GL_INLINE_HEADER_END \ _Pragma ("GCC diagnostic pop") #else # define _GL_INLINE_HEADER_BEGIN # define _GL_INLINE_HEADER_END #endif]) ]) # fcntl-o.m4 serial 6 dnl Copyright (C) 2006, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Paul Eggert. AC_PREREQ([2.60]) # Test whether the flags O_NOATIME and O_NOFOLLOW actually work. # Define HAVE_WORKING_O_NOATIME to 1 if O_NOATIME works, or to 0 otherwise. # Define HAVE_WORKING_O_NOFOLLOW to 1 if O_NOFOLLOW works, or to 0 otherwise. AC_DEFUN([gl_FCNTL_O_FLAGS], [ dnl Persuade glibc to define O_NOATIME and O_NOFOLLOW. AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_HEADERS_ONCE([unistd.h]) AC_CHECK_FUNCS_ONCE([symlink]) AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include #include #if HAVE_UNISTD_H # include #else /* on Windows with MSVC */ # include # include # defined sleep(n) _sleep ((n) * 1000) #endif #include #ifndef O_NOATIME #define O_NOATIME 0 #endif #ifndef O_NOFOLLOW #define O_NOFOLLOW 0 #endif static int const constants[] = { O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, O_APPEND, O_NONBLOCK, O_SYNC, O_ACCMODE, O_RDONLY, O_RDWR, O_WRONLY }; ]], [[ int result = !constants; #if HAVE_SYMLINK { static char const sym[] = "conftest.sym"; if (symlink ("/dev/null", sym) != 0) result |= 2; else { int fd = open (sym, O_WRONLY | O_NOFOLLOW | O_CREAT, 0); if (fd >= 0) { close (fd); result |= 4; } } if (unlink (sym) != 0 || symlink (".", sym) != 0) result |= 2; else { int fd = open (sym, O_RDONLY | O_NOFOLLOW); if (fd >= 0) { close (fd); result |= 4; } } unlink (sym); } #endif { static char const file[] = "confdefs.h"; int fd = open (file, O_RDONLY | O_NOATIME); if (fd < 0) result |= 8; else { struct stat st0; if (fstat (fd, &st0) != 0) result |= 16; else { char c; sleep (1); if (read (fd, &c, 1) != 1) result |= 24; else { if (close (fd) != 0) result |= 32; else { struct stat st1; if (stat (file, &st1) != 0) result |= 40; else if (st0.st_atime != st1.st_atime) result |= 64; } } } } } return result;]])], [gl_cv_header_working_fcntl_h=yes], [case $? in #( 4) gl_cv_header_working_fcntl_h='no (bad O_NOFOLLOW)';; #( 64) gl_cv_header_working_fcntl_h='no (bad O_NOATIME)';; #( 68) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #( *) gl_cv_header_working_fcntl_h='no';; esac], [case "$host_os" in # Guess 'no' on native Windows. mingw*) gl_cv_header_working_fcntl_h='no' ;; *) gl_cv_header_working_fcntl_h=cross-compiling ;; esac ]) ]) case $gl_cv_header_working_fcntl_h in #( *O_NOATIME* | no | cross-compiling) ac_val=0;; #( *) ac_val=1;; esac AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOATIME], [$ac_val], [Define to 1 if O_NOATIME works.]) case $gl_cv_header_working_fcntl_h in #( *O_NOFOLLOW* | no | cross-compiling) ac_val=0;; #( *) ac_val=1;; esac AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOFOLLOW], [$ac_val], [Define to 1 if O_NOFOLLOW works.]) ]) # serial 16 # Configure fcntl.h. dnl Copyright (C) 2006-2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Paul Eggert. AC_DEFUN([gl_FCNTL_H], [ AC_REQUIRE([gl_FCNTL_H_DEFAULTS]) AC_REQUIRE([gl_FCNTL_O_FLAGS]) gl_NEXT_HEADERS([fcntl.h]) dnl Ensure the type pid_t gets defined. AC_REQUIRE([AC_TYPE_PID_T]) dnl Ensure the type mode_t gets defined. AC_REQUIRE([AC_TYPE_MODE_T]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use, if it is not common dnl enough to be declared everywhere. gl_WARN_ON_USE_PREPARE([[#include ]], [fcntl openat]) ]) AC_DEFUN([gl_FCNTL_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_FCNTL_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_FCNTL_H_DEFAULTS], [ GNULIB_CREAT=0; AC_SUBST([GNULIB_CREAT]) GNULIB_FCNTL=0; AC_SUBST([GNULIB_FCNTL]) GNULIB_NONBLOCKING=0; AC_SUBST([GNULIB_NONBLOCKING]) GNULIB_OPEN=0; AC_SUBST([GNULIB_OPEN]) GNULIB_OPENAT=0; AC_SUBST([GNULIB_OPENAT]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_FCNTL=1; AC_SUBST([HAVE_FCNTL]) HAVE_OPENAT=1; AC_SUBST([HAVE_OPENAT]) REPLACE_CREAT=0; AC_SUBST([REPLACE_CREAT]) REPLACE_FCNTL=0; AC_SUBST([REPLACE_FCNTL]) REPLACE_OPEN=0; AC_SUBST([REPLACE_OPEN]) REPLACE_OPENAT=0; AC_SUBST([REPLACE_OPENAT]) ]) # serial 5 # Check for flexible array member support. # Copyright (C) 2006, 2009-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # Written by Paul Eggert. AC_DEFUN([AC_C_FLEXIBLE_ARRAY_MEMBER], [ AC_CACHE_CHECK([for flexible array member], ac_cv_c_flexmember, [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include #include #include struct m { struct m *next, **list; char name[]; }; struct s { struct s *p; struct m *m; int n; double d[]; };]], [[int m = getchar (); size_t nbytes = offsetof (struct s, d) + m * sizeof (double); nbytes += sizeof (struct s) - 1; nbytes -= nbytes % sizeof (struct s); struct s *p = malloc (nbytes); p->p = p; p->m = NULL; p->d[0] = 0.0; return p->d != (double *) NULL;]])], [ac_cv_c_flexmember=yes], [ac_cv_c_flexmember=no])]) if test $ac_cv_c_flexmember = yes; then AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], [Define to nothing if C supports flexible array members, and to 1 if it does not. That way, with a declaration like 'struct s { int n; short d@<:@FLEXIBLE_ARRAY_MEMBER@:>@; };', the struct hack can be used with pre-C99 compilers. Use 'FLEXSIZEOF (struct s, d, N * sizeof (short))' to calculate the size in bytes of such a struct containing an N-element array.]) else AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1]) fi ]) # float_h.m4 serial 12 dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FLOAT_H], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) FLOAT_H= REPLACE_FLOAT_LDBL=0 case "$host_os" in aix* | beos* | openbsd* | mirbsd* | irix*) FLOAT_H=float.h ;; freebsd* | dragonfly*) case "$host_cpu" in changequote(,)dnl i[34567]86 ) changequote([,])dnl FLOAT_H=float.h ;; x86_64 ) # On x86_64 systems, the C compiler may still be generating # 32-bit code. AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __LP64__ || defined __x86_64__ || defined __amd64__ int ok; #else error fail #endif ]])], [], [FLOAT_H=float.h]) ;; esac ;; linux*) case "$host_cpu" in powerpc*) FLOAT_H=float.h ;; esac ;; esac case "$host_os" in aix* | freebsd* | dragonfly* | linux*) if test -n "$FLOAT_H"; then REPLACE_FLOAT_LDBL=1 fi ;; esac dnl Test against glibc-2.7 Linux/SPARC64 bug. REPLACE_ITOLD=0 AC_CACHE_CHECK([whether conversion from 'int' to 'long double' works], [gl_cv_func_itold_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ int i = -1; volatile long double ld; int main () { ld += i * 1.0L; if (ld > 0) return 1; return 0; }]])], [gl_cv_func_itold_works=yes], [gl_cv_func_itold_works=no], [case "$host" in sparc*-*-linux*) AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if defined __LP64__ || defined __arch64__ int ok; #else error fail #endif ]])], [gl_cv_func_itold_works="guessing no"], [gl_cv_func_itold_works="guessing yes"]) ;; # Guess yes on native Windows. mingw*) gl_cv_func_itold_works="guessing yes" ;; *) gl_cv_func_itold_works="guessing yes" ;; esac ]) ]) case "$gl_cv_func_itold_works" in *no) REPLACE_ITOLD=1 dnl We add the workaround to but also to , dnl to increase the chances that the fix function gets pulled in. FLOAT_H=float.h ;; esac if test -n "$FLOAT_H"; then gl_NEXT_HEADERS([float.h]) fi AC_SUBST([FLOAT_H]) AM_CONDITIONAL([GL_GENERATE_FLOAT_H], [test -n "$FLOAT_H"]) AC_SUBST([REPLACE_ITOLD]) ]) # Check for fnmatch - serial 14. -*- coding: utf-8 -*- # Copyright (C) 2000-2007, 2009-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent. # New applications should use the macros below instead. # Request a POSIX compliant fnmatch function. AC_DEFUN([gl_FUNC_FNMATCH_POSIX], [ m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX]) AC_REQUIRE([gl_FNMATCH_H]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles gl_fnmatch_required_lowercase=` echo $gl_fnmatch_required | LC_ALL=C tr '[[A-Z]]' '[[a-z]]' ` AC_CHECK_FUNCS_ONCE([fnmatch]) if test $ac_cv_func_fnmatch = no; then HAVE_FNMATCH=0 else gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}" AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch], [$gl_fnmatch_cache_var], [dnl Some versions of Solaris, SCO, and the GNU C Library dnl have a broken or incompatible fnmatch. dnl So we run a test program. If we are cross-compiling, take no chance. dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this dnl test. if test $gl_fnmatch_required = GNU; then gl_fnmatch_gnu_start= gl_fnmatch_gnu_end= else gl_fnmatch_gnu_start='#if 0' gl_fnmatch_gnu_end='#endif' fi AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include static int y (char const *pattern, char const *string, int flags) { return fnmatch (pattern, string, flags) == 0; } static int n (char const *pattern, char const *string, int flags) { return fnmatch (pattern, string, flags) == FNM_NOMATCH; } ]], [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]"; char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]"; static char const A_1[] = { 'A' - 1, 0 }; static char const A01[] = { 'A' + 1, 0 }; static char const a_1[] = { 'a' - 1, 0 }; static char const a01[] = { 'a' + 1, 0 }; static char const bs_1[] = { '\\\\' - 1, 0 }; static char const bs01[] = { '\\\\' + 1, 0 }; int result = 0; if (!n ("a*", "", 0)) return 1; if (!y ("a*", "abc", 0)) return 1; if (!y ("[/b", "[/b", 0)) /*"]]"*/ /* glibc Bugzilla bug 12378 */ return 1; if (!n ("d*/*1", "d/s/1", FNM_PATHNAME)) return 2; if (!y ("a\\\\bc", "abc", 0)) return 3; if (!n ("a\\\\bc", "abc", FNM_NOESCAPE)) return 3; if (!y ("*x", ".x", 0)) return 4; if (!n ("*x", ".x", FNM_PERIOD)) return 4; if (!y (Apat, "\\\\", 0)) return 5; if (!y (Apat, "A", 0)) return 5; if (!y (apat, "\\\\", 0)) return 5; if (!y (apat, "a", 0)) return 5; if (!(n (Apat, A_1, 0) == ('A' < '\\\\'))) return 5; if (!(n (apat, a_1, 0) == ('a' < '\\\\'))) return 5; if (!(y (Apat, A01, 0) == ('A' < '\\\\'))) return 5; if (!(y (apat, a01, 0) == ('a' < '\\\\'))) return 5; if (!(y (Apat, bs_1, 0) == ('A' < '\\\\'))) return 5; if (!(y (apat, bs_1, 0) == ('a' < '\\\\'))) return 5; if (!(n (Apat, bs01, 0) == ('A' < '\\\\'))) return 5; if (!(n (apat, bs01, 0) == ('a' < '\\\\'))) return 5; $gl_fnmatch_gnu_start if (!y ("xxXX", "xXxX", FNM_CASEFOLD)) result |= 8; if (!y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)) result |= 16; if (!n ("d*/*1", "d/s/1", FNM_FILE_NAME)) result |= 32; if (!y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)) result |= 64; if (!y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)) result |= 64; if (!y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)) result |= 64; $gl_fnmatch_gnu_end return result; ]])], [eval "$gl_fnmatch_cache_var=yes"], [eval "$gl_fnmatch_cache_var=no"], [case "$host_os" in # Guess yes on musl systems. *-musl*) eval "$gl_fnmatch_cache_var=\"guessing yes\"" ;; # Guess no otherwise, even on glibc systems. *) eval "$gl_fnmatch_cache_var=\"guessing no\"" ;; esac ]) ]) eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\"" case "$gl_fnmatch_result" in *yes) ;; *) REPLACE_FNMATCH=1 ;; esac fi if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then gl_REPLACE_FNMATCH_H fi ]) # Request a POSIX compliant fnmatch function with GNU extensions. AC_DEFUN([gl_FUNC_FNMATCH_GNU], [ m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU]) AC_REQUIRE([gl_FUNC_FNMATCH_POSIX]) ]) AC_DEFUN([gl_PREREQ_FNMATCH], [ dnl Prerequisites of lib/fnmatch.c. AC_REQUIRE([AC_TYPE_MBSTATE_T]) AC_CHECK_DECLS([isblank], [], [], [[#include ]]) AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy]) AC_CHECK_HEADERS_ONCE([wctype.h]) ]) # fnmatch_h.m4 serial 4 dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_DEFUN_ONCE([gl_FNMATCH_H], [ AC_REQUIRE([gl_FNMATCH_H_DEFAULTS]) m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])]) AC_CHECK_HEADERS_ONCE([fnmatch.h]) gl_CHECK_NEXT_HEADERS([fnmatch.h]) dnl Persuade glibc to declare FNM_CASEFOLD etc. dnl This is only needed if gl_fnmatch_required = GNU. It would be possible dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file. AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) if test $ac_cv_header_fnmatch_h = yes; then HAVE_FNMATCH_H=1 else HAVE_FNMATCH_H=0 fi AC_SUBST([HAVE_FNMATCH_H]) m4_ifdef([gl_POSIXCHECK], [FNMATCH_H=fnmatch.h], [FNMATCH_H='' if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then dnl Override always, to support the C++ GNULIB_NAMESPACE. FNMATCH_H=fnmatch.h else if test $ac_cv_header_fnmatch_h != yes; then dnl Provide a substitute file. FNMATCH_H=fnmatch.h fi fi ]) AC_SUBST([FNMATCH_H]) AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [fnmatch]) ]) dnl Unconditionally enables the replacement of . AC_DEFUN([gl_REPLACE_FNMATCH_H], [ AC_REQUIRE([gl_FNMATCH_H_DEFAULTS]) FNMATCH_H='fnmatch.h' AM_CONDITIONAL([GL_GENERATE_FNMATCH_H], [test -n "$FNMATCH_H"]) ]) AC_DEFUN([gl_FNMATCH_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_FNMATCH_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_FNMATCH_H_DEFAULTS], [ GNULIB_FNMATCH=0; AC_SUBST([GNULIB_FNMATCH]) dnl Assume POSIX behavior unless another module says otherwise. HAVE_FNMATCH=1; AC_SUBST([HAVE_FNMATCH]) REPLACE_FNMATCH=0; AC_SUBST([REPLACE_FNMATCH]) ]) # fpieee.m4 serial 2 -*- coding: utf-8 -*- dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl IEEE 754 standardized three items: dnl - The formats of single-float and double-float - nowadays commonly dnl available as 'float' and 'double' in C and C++. dnl No autoconf test needed. dnl - The overflow and division by zero behaviour: The result are values dnl '±Inf' and 'NaN', rather than exceptions as it was before. dnl This file provides an autoconf macro for ensuring this behaviour of dnl floating-point operations. dnl - A set of conditions (overflow, underflow, inexact, etc.) which can dnl be configured to trigger an exception. dnl This cannot be done in a portable way: it depends on the compiler, dnl libc, kernel, and CPU. No autoconf macro is provided for this. dnl Ensure non-trapping behaviour of floating-point overflow and dnl floating-point division by zero. dnl (For integer overflow, see gcc's -ftrapv option; for integer division by dnl zero, see the autoconf macro in intdiv0.m4.) AC_DEFUN([gl_FP_IEEE], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) # IEEE behaviour is the default on all CPUs except Alpha and SH # (according to the test results of Bruno Haible's ieeefp/fenv_default.m4 # and the GCC 4.1.2 manual). case "$host_cpu" in alpha*) # On Alpha systems, a compiler option provides the behaviour. # See the ieee(3) manual page, also available at # if test -n "$GCC"; then # GCC has the option -mieee. # For full IEEE compliance (rarely needed), use option -mieee-with-inexact. CPPFLAGS="$CPPFLAGS -mieee" else # Compaq (ex-DEC) C has the option -ieee, equivalent to -ieee_with_no_inexact. # For full IEEE compliance (rarely needed), use option -ieee_with_inexact. CPPFLAGS="$CPPFLAGS -ieee" fi ;; sh*) if test -n "$GCC"; then # GCC has the option -mieee. CPPFLAGS="$CPPFLAGS -mieee" fi ;; esac ]) # frexp.m4 serial 16 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_FREXP], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_CHECK_FREXP_NO_LIBM]) FREXP_LIBM= if test $gl_cv_func_frexp_no_libm = no; then AC_CACHE_CHECK([whether frexp() can be used with libm], [gl_cv_func_frexp_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include double x;]], [[int e; return frexp (x, &e) > 0;]])], [gl_cv_func_frexp_in_libm=yes], [gl_cv_func_frexp_in_libm=no]) LIBS="$save_LIBS" ]) if test $gl_cv_func_frexp_in_libm = yes; then FREXP_LIBM=-lm fi fi if test $gl_cv_func_frexp_no_libm = yes \ || test $gl_cv_func_frexp_in_libm = yes; then save_LIBS="$LIBS" LIBS="$LIBS $FREXP_LIBM" gl_FUNC_FREXP_WORKS LIBS="$save_LIBS" case "$gl_cv_func_frexp_works" in *yes) gl_func_frexp=yes ;; *) gl_func_frexp=no; REPLACE_FREXP=1; FREXP_LIBM= ;; esac else gl_func_frexp=no fi if test $gl_func_frexp = yes; then AC_DEFINE([HAVE_FREXP], [1], [Define if the frexp() function is available and works.]) fi AC_SUBST([FREXP_LIBM]) ]) AC_DEFUN([gl_FUNC_FREXP_NO_LIBM], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_CHECK_FREXP_NO_LIBM]) if test $gl_cv_func_frexp_no_libm = yes; then gl_FUNC_FREXP_WORKS case "$gl_cv_func_frexp_works" in *yes) gl_func_frexp_no_libm=yes ;; *) gl_func_frexp_no_libm=no; REPLACE_FREXP=1 ;; esac else gl_func_frexp_no_libm=no dnl Set REPLACE_FREXP here because the system may have frexp in libm. REPLACE_FREXP=1 fi if test $gl_func_frexp_no_libm = yes; then AC_DEFINE([HAVE_FREXP_IN_LIBC], [1], [Define if the frexp() function is available in libc.]) fi ]) dnl Test whether frexp() can be used without linking with libm. dnl Set gl_cv_func_frexp_no_libm to 'yes' or 'no' accordingly. AC_DEFUN([gl_CHECK_FREXP_NO_LIBM], [ AC_CACHE_CHECK([whether frexp() can be used without linking with libm], [gl_cv_func_frexp_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include double x;]], [[int e; return frexp (x, &e) > 0;]])], [gl_cv_func_frexp_no_libm=yes], [gl_cv_func_frexp_no_libm=no]) ]) ]) dnl Test whether frexp() works also on denormalized numbers (this fails e.g. on dnl NetBSD 3.0), on infinite numbers (this fails e.g. on IRIX 6.5 and mingw), dnl and on negative zero (this fails e.g. on NetBSD 4.99 and mingw). AC_DEFUN([gl_FUNC_FREXP_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_DECLS_ONCE([alarm]) AC_CACHE_CHECK([whether frexp works], [gl_cv_func_frexp_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #if HAVE_DECL_ALARM # include # include #endif /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0. ICC 10.0 has a bug when optimizing the expression -zero. The expression -DBL_MIN * DBL_MIN does not work when cross-compiling to PowerPC on Mac OS X 10.5. */ #if defined __hpux || defined __sgi || defined __ICC static double compute_minus_zero (void) { return -DBL_MIN * DBL_MIN; } # define minus_zero compute_minus_zero () #else double minus_zero = -0.0; #endif int main() { int result = 0; int i; volatile double x; double zero = 0.0; #if HAVE_DECL_ALARM /* NeXTstep 3.3 frexp() runs into an endless loop when called on an infinite number. Let the test fail in this case. */ signal (SIGALRM, SIG_DFL); alarm (5); #endif /* Test on denormalized numbers. */ for (i = 1, x = 1.0; i >= DBL_MIN_EXP; i--, x *= 0.5) ; if (x > 0.0) { int exp; double y = frexp (x, &exp); /* On machines with IEEE754 arithmetic: x = 1.11254e-308, exp = -1022. On NetBSD: y = 0.75. Correct: y = 0.5. */ if (y != 0.5) result |= 1; } /* Test on infinite numbers. */ x = 1.0 / zero; { int exp; double y = frexp (x, &exp); if (y != x) result |= 2; } /* Test on negative zero. */ x = minus_zero; { int exp; double y = frexp (x, &exp); if (memcmp (&y, &x, sizeof x)) result |= 4; } return result; }]])], [gl_cv_func_frexp_works=yes], [gl_cv_func_frexp_works=no], [case "$host_os" in netbsd* | irix*) gl_cv_func_frexp_works="guessing no" ;; mingw*) # Guess yes with MSVC, no with mingw. AC_EGREP_CPP([Good], [ #ifdef _MSC_VER Good #endif ], [gl_cv_func_frexp_works="guessing yes"], [gl_cv_func_frexp_works="guessing no"]) ;; *) gl_cv_func_frexp_works="guessing yes" ;; esac ]) ]) ]) # frexpl.m4 serial 21 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_FREXPL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) dnl Persuade glibc to declare frexpl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Check whether it's declared. dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in . AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include ]]) FREXPL_LIBM= if test $HAVE_DECL_FREXPL = 1; then gl_CHECK_FREXPL_NO_LIBM if test $gl_cv_func_frexpl_no_libm = no; then AC_CACHE_CHECK([whether frexpl() can be used with libm], [gl_cv_func_frexpl_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include long double x;]], [[int e; return frexpl (x, &e) > 0;]])], [gl_cv_func_frexpl_in_libm=yes], [gl_cv_func_frexpl_in_libm=no]) LIBS="$save_LIBS" ]) if test $gl_cv_func_frexpl_in_libm = yes; then FREXPL_LIBM=-lm fi fi if test $gl_cv_func_frexpl_no_libm = yes \ || test $gl_cv_func_frexpl_in_libm = yes; then save_LIBS="$LIBS" LIBS="$LIBS $FREXPL_LIBM" gl_FUNC_FREXPL_WORKS LIBS="$save_LIBS" case "$gl_cv_func_frexpl_works" in *yes) gl_func_frexpl=yes ;; *) gl_func_frexpl=no; REPLACE_FREXPL=1 ;; esac else gl_func_frexpl=no fi if test $gl_func_frexpl = yes; then AC_DEFINE([HAVE_FREXPL], [1], [Define if the frexpl() function is available.]) fi fi if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl = no; then dnl Find libraries needed to link lib/frexpl.c. if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then AC_REQUIRE([gl_FUNC_FREXP]) FREXPL_LIBM="$FREXP_LIBM" else FREXPL_LIBM= fi fi AC_SUBST([FREXPL_LIBM]) ]) AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) dnl Check whether it's declared. dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in . AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include ]]) if test $HAVE_DECL_FREXPL = 1; then gl_CHECK_FREXPL_NO_LIBM if test $gl_cv_func_frexpl_no_libm = yes; then gl_FUNC_FREXPL_WORKS case "$gl_cv_func_frexpl_works" in *yes) gl_func_frexpl_no_libm=yes ;; *) gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;; esac else gl_func_frexpl_no_libm=no dnl Set REPLACE_FREXPL here because the system may have frexpl in libm. REPLACE_FREXPL=1 fi if test $gl_func_frexpl_no_libm = yes; then AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1], [Define if the frexpl() function is available in libc.]) fi fi ]) dnl Test whether frexpl() can be used without linking with libm. dnl Set gl_cv_func_frexpl_no_libm to 'yes' or 'no' accordingly. AC_DEFUN([gl_CHECK_FREXPL_NO_LIBM], [ AC_CACHE_CHECK([whether frexpl() can be used without linking with libm], [gl_cv_func_frexpl_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include long double x;]], [[int e; return frexpl (x, &e) > 0;]])], [gl_cv_func_frexpl_no_libm=yes], [gl_cv_func_frexpl_no_libm=no]) ]) ]) dnl Test whether frexpl() works on finite numbers (this fails on dnl Mac OS X 10.4/PowerPC, on AIX 5.1, and on BeOS), on denormalized numbers dnl (this fails on Mac OS X 10.5/i386), and also on infinite numbers (this dnl fails e.g. on IRIX 6.5 and mingw). AC_DEFUN([gl_FUNC_FREXPL_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether frexpl works], [gl_cv_func_frexpl_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Override the values of , like done in float.in.h. */ #if defined __i386__ && (defined __BEOS__ || defined __OpenBSD__) # undef LDBL_MIN_EXP # define LDBL_MIN_EXP (-16381) #endif #if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__) # undef LDBL_MIN_EXP # define LDBL_MIN_EXP (-16381) #endif #if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__ # undef LDBL_MIN_EXP # define LDBL_MIN_EXP DBL_MIN_EXP #endif #if defined __sgi && (LDBL_MANT_DIG >= 106) # if defined __GNUC__ # undef LDBL_MIN_EXP # define LDBL_MIN_EXP DBL_MIN_EXP # endif #endif extern #ifdef __cplusplus "C" #endif long double frexpl (long double, int *); int main() { int result = 0; volatile long double x; /* Test on finite numbers that fails on AIX 5.1. */ x = 16.0L; { int exp = -9999; frexpl (x, &exp); if (exp != 5) result |= 1; } /* Test on finite numbers that fails on Mac OS X 10.4, because its frexpl function returns an invalid (incorrectly normalized) value: it returns y = { 0x3fe028f5, 0xc28f5c28, 0x3c9eb851, 0xeb851eb8 } but the correct result is 0.505L = { 0x3fe028f5, 0xc28f5c29, 0xbc547ae1, 0x47ae1480 } */ x = 1.01L; { int exp = -9999; long double y = frexpl (x, &exp); if (!(exp == 1 && y == 0.505L)) result |= 2; } /* Test on large finite numbers. This fails on BeOS at i = 16322, while LDBL_MAX_EXP = 16384. In the loop end test, we test x against Infinity, rather than comparing i with LDBL_MAX_EXP, because BeOS has a wrong LDBL_MAX_EXP. */ { int i; for (i = 1, x = 1.0L; x != x + x; i++, x *= 2.0L) { int exp = -9999; frexpl (x, &exp); if (exp != i) { result |= 4; break; } } } /* Test on denormalized numbers. */ { int i; for (i = 1, x = 1.0L; i >= LDBL_MIN_EXP; i--, x *= 0.5L) ; if (x > 0.0L) { int exp; long double y = frexpl (x, &exp); /* On machines with IEEE854 arithmetic: x = 1.68105e-4932, exp = -16382, y = 0.5. On Mac OS X 10.5: exp = -16384, y = 0.5. */ if (exp != LDBL_MIN_EXP - 1) result |= 8; } } /* Test on infinite numbers. */ x = 1.0L / 0.0L; { int exp; long double y = frexpl (x, &exp); if (y != x) result |= 16; } return result; }]])], [gl_cv_func_frexpl_works=yes], [gl_cv_func_frexpl_works=no], [ changequote(,)dnl case "$host_os" in aix | aix[3-6]* | beos* | darwin* | irix* | mingw* | pw*) gl_cv_func_frexpl_works="guessing no";; *) gl_cv_func_frexpl_works="guessing yes";; esac changequote([,])dnl ]) ]) ]) # fstat.m4 serial 6 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_FSTAT], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) case "$host_os" in mingw* | solaris*) dnl On MinGW, the original stat() returns st_atime, st_mtime, dnl st_ctime values that are affected by the time zone. dnl Solaris stat can return a negative tv_nsec. REPLACE_FSTAT=1 ;; esac dnl Replace fstat() for supporting the gnulib-defined open() on directories. m4_ifdef([gl_FUNC_FCHDIR], [ gl_TEST_FCHDIR if test $HAVE_FCHDIR = 0; then case "$gl_cv_func_open_directory_works" in *yes) ;; *) REPLACE_FSTAT=1 ;; esac fi ]) ]) # Prerequisites of lib/fstat.c and lib/stat-w32.c. AC_DEFUN([gl_PREREQ_FSTAT], [ AC_REQUIRE([gl_HEADER_SYS_STAT_H]) : ]) # serial 8 # See if we need to provide futimens replacement. dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Written by Eric Blake. AC_DEFUN([gl_FUNC_FUTIMENS], [ AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([futimens]) if test $ac_cv_func_futimens = no; then HAVE_FUTIMENS=0 else AC_CACHE_CHECK([whether futimens works], [gl_cv_func_futimens_works], [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]], [[struct timespec ts[2]; int fd = creat ("conftest.file", 0600); struct stat st; if (fd < 0) return 1; ts[0].tv_sec = 1; ts[0].tv_nsec = UTIME_OMIT; ts[1].tv_sec = 1; ts[1].tv_nsec = UTIME_NOW; errno = 0; if (futimens (AT_FDCWD, NULL) == 0) return 2; if (errno != EBADF) return 3; if (futimens (fd, ts)) return 4; sleep (1); ts[0].tv_nsec = UTIME_NOW; ts[1].tv_nsec = UTIME_OMIT; if (futimens (fd, ts)) return 5; if (fstat (fd, &st)) return 6; if (st.st_ctime < st.st_atime) return 7; ]])], [gl_cv_func_futimens_works=yes], [gl_cv_func_futimens_works=no], [case "$host_os" in # Guess no on glibc systems. *-gnu* | gnu*) gl_cv_func_futimens_works="guessing no" ;; # Guess no on musl systems. *-musl*) gl_cv_func_futimens_works="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_futimens_works="guessing yes" ;; esac ]) rm -f conftest.file]) case "$gl_cv_func_futimens_works" in *yes) ;; *) REPLACE_FUTIMENS=1 ;; esac fi ]) # getdelim.m4 serial 14 dnl Copyright (C) 2005-2007, 2009-2020 Free Software Foundation, Inc. dnl dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_PREREQ([2.59]) AC_DEFUN([gl_FUNC_GETDELIM], [ AC_REQUIRE([gl_STDIO_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl Persuade glibc to declare getdelim(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_CHECK_DECLS_ONCE([getdelim]) AC_CHECK_FUNCS_ONCE([getdelim]) if test $ac_cv_func_getdelim = yes; then HAVE_GETDELIM=1 dnl Found it in some library. Verify that it works. AC_CACHE_CHECK([for working getdelim function], [gl_cv_func_working_getdelim], [echo fooNbarN | tr -d '\012' | tr N '\012' > conftest.data AC_RUN_IFELSE([AC_LANG_SOURCE([[ # include # include # include int main () { FILE *in = fopen ("./conftest.data", "r"); if (!in) return 1; { /* Test result for a NULL buffer and a zero size. Based on a test program from Karl Heuer. */ char *line = NULL; size_t siz = 0; int len = getdelim (&line, &siz, '\n', in); if (!(len == 4 && line && strcmp (line, "foo\n") == 0)) { free (line); fclose (in); return 2; } } { /* Test result for a NULL buffer and a non-zero size. This crashes on FreeBSD 8.0. */ char *line = NULL; size_t siz = (size_t)(~0) / 4; if (getdelim (&line, &siz, '\n', in) == -1) { fclose (in); return 3; } free (line); } fclose (in); return 0; } ]])], [gl_cv_func_working_getdelim=yes], [gl_cv_func_working_getdelim=no], [dnl We're cross compiling. dnl Guess it works on glibc2 systems and musl systems. AC_EGREP_CPP([Lucky GNU user], [ #include #ifdef __GNU_LIBRARY__ #if (__GLIBC__ >= 2) && !defined __UCLIBC__ Lucky GNU user #endif #endif ], [gl_cv_func_working_getdelim="guessing yes"], [case "$host_os" in *-musl*) gl_cv_func_working_getdelim="guessing yes" ;; *) gl_cv_func_working_getdelim="$gl_cross_guess_normal" ;; esac ]) ]) ]) case "$gl_cv_func_working_getdelim" in *yes) ;; *) REPLACE_GETDELIM=1 ;; esac else HAVE_GETDELIM=0 fi if test $ac_cv_have_decl_getdelim = no; then HAVE_DECL_GETDELIM=0 fi ]) # Prerequisites of lib/getdelim.c. AC_DEFUN([gl_PREREQ_GETDELIM], [ AC_CHECK_FUNCS([flockfile funlockfile]) AC_CHECK_DECLS([getc_unlocked]) ]) # getline.m4 serial 30 dnl Copyright (C) 1998-2003, 2005-2007, 2009-2020 Free Software Foundation, dnl Inc. dnl dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_PREREQ([2.59]) dnl See if there's a working, system-supplied version of the getline function. dnl We can't just do AC_REPLACE_FUNCS([getline]) because some systems dnl have a function by that name in -linet that doesn't have anything dnl to do with the function we need. AC_DEFUN([gl_FUNC_GETLINE], [ AC_REQUIRE([gl_STDIO_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl Persuade glibc to declare getline(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_CHECK_DECLS_ONCE([getline]) gl_getline_needs_run_time_check=no AC_CHECK_FUNC([getline], [dnl Found it in some library. Verify that it works. gl_getline_needs_run_time_check=yes], [am_cv_func_working_getline=no]) if test $gl_getline_needs_run_time_check = yes; then AC_CACHE_CHECK([for working getline function], [am_cv_func_working_getline], [echo fooNbarN | tr -d '\012' | tr N '\012' > conftest.data AC_RUN_IFELSE([AC_LANG_SOURCE([[ # include # include # include int main () { FILE *in = fopen ("./conftest.data", "r"); if (!in) return 1; { /* Test result for a NULL buffer and a zero size. Based on a test program from Karl Heuer. */ char *line = NULL; size_t siz = 0; int len = getline (&line, &siz, in); if (!(len == 4 && line && strcmp (line, "foo\n") == 0)) { free (line); fclose (in); return 2; } free (line); } { /* Test result for a NULL buffer and a non-zero size. This crashes on FreeBSD 8.0. */ char *line = NULL; size_t siz = (size_t)(~0) / 4; if (getline (&line, &siz, in) == -1) { fclose (in); return 3; } free (line); } fclose (in); return 0; } ]])], [am_cv_func_working_getline=yes], [am_cv_func_working_getline=no], [dnl We're cross compiling. dnl Guess it works on glibc2 systems and musl systems. AC_EGREP_CPP([Lucky GNU user], [ #include #ifdef __GNU_LIBRARY__ #if (__GLIBC__ >= 2) && !defined __UCLIBC__ Lucky GNU user #endif #endif ], [am_cv_func_working_getline="guessing yes"], [case "$host_os" in *-musl*) am_cv_func_working_getline="guessing yes" ;; *) am_cv_func_working_getline="$gl_cross_guess_normal" ;; esac ]) ]) ]) fi if test $ac_cv_have_decl_getline = no; then HAVE_DECL_GETLINE=0 fi case "$am_cv_func_working_getline" in *yes) ;; *) dnl Set REPLACE_GETLINE always: Even if we have not found the broken dnl getline function among $LIBS, it may exist in libinet and the dnl executable may be linked with -linet. REPLACE_GETLINE=1 ;; esac ]) # Prerequisites of lib/getline.c. AC_DEFUN([gl_PREREQ_GETLINE], [ : ]) # getlogin.m4 serial 5 dnl Copyright (C) 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_GETLOGIN], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_CHECK_DECLS_ONCE([getlogin]) if test $ac_cv_have_decl_getlogin = no; then HAVE_DECL_GETLOGIN=0 fi AC_CHECK_FUNCS_ONCE([getlogin]) if test $ac_cv_func_getlogin = no; then HAVE_GETLOGIN=0 fi ]) dnl Determines the library needed by the implementation of the dnl getlogin and getlogin_r functions. AC_DEFUN([gl_LIB_GETLOGIN], [ AC_REQUIRE([AC_CANONICAL_HOST]) case $host_os in mingw*) LIB_GETLOGIN='-ladvapi32' ;; *) LIB_GETLOGIN= ;; esac AC_SUBST([LIB_GETLOGIN]) ]) #serial 12 # Copyright (C) 2005-2007, 2009-2020 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. dnl From Derek Price dnl dnl Provide getlogin_r when the system lacks it. dnl AC_DEFUN([gl_FUNC_GETLOGIN_R], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl Persuade glibc to declare getlogin_r(). dnl Persuade Solaris to provide the POSIX compliant declaration of dnl getlogin_r(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_DECLS_ONCE([getlogin_r]) if test $ac_cv_have_decl_getlogin_r = no; then HAVE_DECL_GETLOGIN_R=0 fi AC_CHECK_FUNCS_ONCE([getlogin_r]) if test $ac_cv_func_getlogin_r = no; then HAVE_GETLOGIN_R=0 else HAVE_GETLOGIN_R=1 dnl On Mac OS X 10.12 and OSF/1 5.1, getlogin_r returns a truncated result dnl if the buffer is not large enough. AC_REQUIRE([AC_CANONICAL_HOST]) AC_CACHE_CHECK([whether getlogin_r works with small buffers], [gl_cv_func_getlogin_r_works], [ dnl Initial guess, used when cross-compiling. changequote(,)dnl case "$host_os" in # Guess no on Mac OS X, OSF/1. darwin* | osf*) gl_cv_func_getlogin_r_works="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_getlogin_r_works="guessing yes" ;; esac changequote([,])dnl AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #if !HAVE_DECL_GETLOGIN_R extern # ifdef __cplusplus "C" # endif int getlogin_r (char *, size_t); #endif int main (void) { int result = 0; char buf[100]; if (getlogin_r (buf, 0) == 0) result |= 1; if (getlogin_r (buf, 1) == 0) result |= 2; if (getlogin_r (buf, 100) == 0) { size_t n = strlen (buf); if (getlogin_r (buf, n) == 0) result |= 4; } return result; }]])], [gl_cv_func_getlogin_r_works=yes], [gl_cv_func_getlogin_r_works=no], [:]) ]) case "$gl_cv_func_getlogin_r_works" in *yes) ;; *) REPLACE_GETLOGIN_R=1 ;; esac fi ]) AC_DEFUN([gl_PREREQ_GETLOGIN_R], [ AC_CHECK_DECLS_ONCE([getlogin]) ]) # getopt.m4 serial 47 dnl Copyright (C) 2002-2006, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Request a POSIX compliant getopt function. AC_DEFUN([gl_FUNC_GETOPT_POSIX], [ m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX]) AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([gl_GETOPT_CHECK_HEADERS]) dnl Other modules can request the gnulib implementation of the getopt dnl functions unconditionally, by defining gl_REPLACE_GETOPT_ALWAYS. dnl argp.m4 does this. m4_ifdef([gl_REPLACE_GETOPT_ALWAYS], [ REPLACE_GETOPT=1 ], [ REPLACE_GETOPT=0 if test -n "$gl_replace_getopt"; then REPLACE_GETOPT=1 fi ]) if test $REPLACE_GETOPT = 1; then dnl Arrange for getopt.h to be created. gl_GETOPT_SUBSTITUTE_HEADER fi ]) # Request a POSIX compliant getopt function with GNU extensions (such as # options with optional arguments) and the functions getopt_long, # getopt_long_only. AC_DEFUN([gl_FUNC_GETOPT_GNU], [ dnl Set the variable gl_getopt_required, so that all invocations of dnl gl_GETOPT_CHECK_HEADERS in the scope of the current configure file dnl will check for getopt with GNU extensions. dnl This means that if one gnulib-tool invocation requests getopt-posix dnl and another gnulib-tool invocation requests getopt-gnu, it is as if dnl both had requested getopt-gnu. m4_divert_text([INIT_PREPARE], [gl_getopt_required=GNU]) dnl No need to invoke gl_FUNC_GETOPT_POSIX here; this is automatically dnl done through the module dependency getopt-gnu -> getopt-posix. ]) # Determine whether to replace the entire getopt facility. AC_DEFUN([gl_GETOPT_CHECK_HEADERS], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([AC_PROG_AWK]) dnl for awk that supports ENVIRON dnl Persuade Solaris to declare optarg, optind, opterr, optopt. AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) gl_CHECK_NEXT_HEADERS([getopt.h]) if test $ac_cv_header_getopt_h = yes; then HAVE_GETOPT_H=1 else HAVE_GETOPT_H=0 fi AC_SUBST([HAVE_GETOPT_H]) gl_replace_getopt= dnl Test whether is available. if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes]) fi dnl Test whether the function getopt_long is available. if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes]) fi dnl POSIX 2008 does not specify leading '+' behavior, but see dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on dnl the next version of POSIX. For now, we only guarantee leading '+' dnl behavior with getopt-gnu. if test -z "$gl_replace_getopt"; then AC_CACHE_CHECK([whether getopt is POSIX compatible], [gl_cv_func_getopt_posix], [ dnl Merging these three different test programs into a single one dnl would require a reset mechanism. On BSD systems, it can be done dnl through 'optreset'; on some others (glibc), it can be done by dnl setting 'optind' to 0; on others again (HP-UX, IRIX, OSF/1, dnl Solaris 9, musl libc), there is no such mechanism. if test $cross_compiling = no; then dnl Sanity check. Succeeds everywhere (except on MSVC, dnl which lacks and getopt() entirely). AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include int main () { static char program[] = "program"; static char a[] = "-a"; static char foo[] = "foo"; static char bar[] = "bar"; char *argv[] = { program, a, foo, bar, NULL }; int c; c = getopt (4, argv, "ab"); if (!(c == 'a')) return 1; c = getopt (4, argv, "ab"); if (!(c == -1)) return 2; if (!(optind == 2)) return 3; return 0; } ]])], [gl_cv_func_getopt_posix=maybe], [gl_cv_func_getopt_posix=no]) if test $gl_cv_func_getopt_posix = maybe; then dnl Sanity check with '+'. Succeeds everywhere (except on MSVC, dnl which lacks and getopt() entirely). AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include int main () { static char program[] = "program"; static char donald[] = "donald"; static char p[] = "-p"; static char billy[] = "billy"; static char duck[] = "duck"; static char a[] = "-a"; static char bar[] = "bar"; char *argv[] = { program, donald, p, billy, duck, a, bar, NULL }; int c; c = getopt (7, argv, "+abp:q:"); if (!(c == -1)) return 4; if (!(strcmp (argv[0], "program") == 0)) return 5; if (!(strcmp (argv[1], "donald") == 0)) return 6; if (!(strcmp (argv[2], "-p") == 0)) return 7; if (!(strcmp (argv[3], "billy") == 0)) return 8; if (!(strcmp (argv[4], "duck") == 0)) return 9; if (!(strcmp (argv[5], "-a") == 0)) return 10; if (!(strcmp (argv[6], "bar") == 0)) return 11; if (!(optind == 1)) return 12; return 0; } ]])], [gl_cv_func_getopt_posix=maybe], [gl_cv_func_getopt_posix=no]) fi if test $gl_cv_func_getopt_posix = maybe; then dnl Detect Mac OS X 10.5, AIX 7.1, mingw bug. AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include int main () { static char program[] = "program"; static char ab[] = "-ab"; char *argv[3] = { program, ab, NULL }; if (getopt (2, argv, "ab:") != 'a') return 13; if (getopt (2, argv, "ab:") != '?') return 14; if (optopt != 'b') return 15; if (optind != 2) return 16; return 0; } ]])], [gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no]) fi else case "$host_os" in darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";; *) gl_cv_func_getopt_posix="guessing yes";; esac fi ]) case "$gl_cv_func_getopt_posix" in *no) gl_replace_getopt=yes ;; esac fi if test -z "$gl_replace_getopt" && test $gl_getopt_required = GNU; then AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_getopt_gnu], [# Even with POSIXLY_CORRECT, the GNU extension of leading '-' in the # optstring is necessary for programs like m4 that have POSIX-mandated # semantics for supporting options interspersed with files. # Also, since getopt_long is a GNU extension, we require optind=0. # Bash ties 'set -o posix' to a non-exported POSIXLY_CORRECT; # so take care to revert to the correct (non-)export state. dnl GNU Coding Standards currently allow awk but not env; besides, env dnl is ambiguous with environment values that contain newlines. gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }' case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" #include #include ]GL_NOCRASH[ ]], [[ int result = 0; nocrash_init(); /* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw, and fails on Mac OS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10. */ { static char conftest[] = "conftest"; static char plus[] = "-+"; char *argv[3] = { conftest, plus, NULL }; opterr = 0; if (getopt (2, argv, "+a") != '?') result |= 1; } /* This code succeeds on glibc 2.8, mingw, and fails on Mac OS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x. */ { static char program[] = "program"; static char p[] = "-p"; static char foo[] = "foo"; static char bar[] = "bar"; char *argv[] = { program, p, foo, bar, NULL }; optind = 1; if (getopt (4, argv, "p::") != 'p') result |= 2; else if (optarg != NULL) result |= 4; else if (getopt (4, argv, "p::") != -1) result |= 6; else if (optind != 2) result |= 8; } /* This code succeeds on glibc 2.8 and fails on Cygwin 1.7.0. */ { static char program[] = "program"; static char foo[] = "foo"; static char p[] = "-p"; char *argv[] = { program, foo, p, NULL }; optind = 0; if (getopt (3, argv, "-p") != 1) result |= 16; else if (getopt (3, argv, "-p") != 'p') result |= 16; } /* This code fails on glibc 2.11. */ { static char program[] = "program"; static char b[] = "-b"; static char a[] = "-a"; char *argv[] = { program, b, a, NULL }; optind = opterr = 0; if (getopt (3, argv, "+:a:b") != 'b') result |= 32; else if (getopt (3, argv, "+:a:b") != ':') result |= 32; } /* This code dumps core on glibc 2.14. */ { static char program[] = "program"; static char w[] = "-W"; static char dummy[] = "dummy"; char *argv[] = { program, w, dummy, NULL }; optind = opterr = 1; if (getopt (3, argv, "W;") != 'W') result |= 64; } return result; ]])], [gl_cv_func_getopt_gnu=yes], [gl_cv_func_getopt_gnu=no], [dnl Cross compiling. dnl Assume the worst, even on glibc platforms. dnl But obey --enable-cross-guesses. gl_cv_func_getopt_gnu="$gl_cross_guess_normal" ]) case $gl_had_POSIXLY_CORRECT in exported) ;; yes) AS_UNSET([POSIXLY_CORRECT]); POSIXLY_CORRECT=1 ;; *) AS_UNSET([POSIXLY_CORRECT]) ;; esac ]) if test "$gl_cv_func_getopt_gnu" != yes; then gl_replace_getopt=yes else AC_CACHE_CHECK([for working GNU getopt_long function], [gl_cv_func_getopt_long_gnu], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include #include #include ]], [[static const struct option long_options[] = { { "xtremely-",no_argument, NULL, 1003 }, { "xtra", no_argument, NULL, 1001 }, { "xtreme", no_argument, NULL, 1002 }, { "xtremely", no_argument, NULL, 1003 }, { NULL, 0, NULL, 0 } }; /* This code fails on OpenBSD 5.0. */ { static char program[] = "program"; static char xtremel[] = "--xtremel"; char *argv[] = { program, xtremel, NULL }; int option_index; optind = 1; opterr = 0; if (getopt_long (2, argv, "", long_options, &option_index) != 1003) return 1; } return 0; ]])], [gl_cv_func_getopt_long_gnu=yes], [gl_cv_func_getopt_long_gnu=no], [dnl Cross compiling. Guess no on OpenBSD, yes otherwise. case "$host_os" in openbsd*) gl_cv_func_getopt_long_gnu="guessing no";; *) gl_cv_func_getopt_long_gnu="guessing yes";; esac ]) ]) case "$gl_cv_func_getopt_long_gnu" in *yes) ;; *) gl_replace_getopt=yes ;; esac fi fi ]) AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER], [ AC_CHECK_HEADERS_ONCE([sys/cdefs.h]) if test $ac_cv_header_sys_cdefs_h = yes; then HAVE_SYS_CDEFS_H=1 else HAVE_SYS_CDEFS_H=0 fi AC_SUBST([HAVE_SYS_CDEFS_H]) AC_DEFINE([__GETOPT_PREFIX], [[rpl_]], [Define to rpl_ if the getopt replacement functions and variables should be used.]) GETOPT_H=getopt.h GETOPT_CDEFS_H=getopt-cdefs.h AC_SUBST([GETOPT_H]) AC_SUBST([GETOPT_CDEFS_H]) ]) # gettime.m4 serial 9 dnl Copyright (C) 2002, 2004-2006, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_GETTIME], [ dnl Prerequisites of lib/gettime.c. AC_REQUIRE([gl_CLOCK_TIME]) AC_REQUIRE([gl_TIMESPEC]) AC_CHECK_FUNCS_ONCE([gettimeofday]) ]) # serial 27 # Copyright (C) 2001-2003, 2005, 2007, 2009-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. dnl From Jim Meyering. AC_DEFUN([gl_FUNC_GETTIMEOFDAY], [ AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS]) AC_REQUIRE([AC_C_RESTRICT]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_HEADER_SYS_TIME_H]) AC_CHECK_FUNCS_ONCE([gettimeofday]) gl_gettimeofday_timezone=void if test $ac_cv_func_gettimeofday != yes; then HAVE_GETTIMEOFDAY=0 else gl_FUNC_GETTIMEOFDAY_CLOBBER AC_CACHE_CHECK([for gettimeofday with POSIX signature], [gl_cv_func_gettimeofday_posix_signature], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include struct timeval c; int gettimeofday (struct timeval *restrict, void *restrict); ]], [[/* glibc uses struct timezone * rather than the POSIX void * if _GNU_SOURCE is defined. However, since the only portable use of gettimeofday uses NULL as the second parameter, and since the glibc definition is actually more typesafe, it is not worth wrapping this to get a compliant signature. */ int (*f) (struct timeval *restrict, void *restrict) = gettimeofday; int x = f (&c, 0); return !(x | c.tv_sec | c.tv_usec); ]])], [gl_cv_func_gettimeofday_posix_signature=yes], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include int gettimeofday (struct timeval *restrict, struct timezone *restrict); ]])], [gl_cv_func_gettimeofday_posix_signature=almost], [gl_cv_func_gettimeofday_posix_signature=no])])]) if test $gl_cv_func_gettimeofday_posix_signature = almost; then gl_gettimeofday_timezone='struct timezone' elif test $gl_cv_func_gettimeofday_posix_signature != yes; then REPLACE_GETTIMEOFDAY=1 fi dnl If we override 'struct timeval', we also have to override gettimeofday. if test $REPLACE_STRUCT_TIMEVAL = 1; then REPLACE_GETTIMEOFDAY=1 fi dnl On mingw, the original gettimeofday has only a precision of 15.6 dnl milliseconds. So override it. case "$host_os" in mingw*) REPLACE_GETTIMEOFDAY=1 ;; esac fi AC_DEFINE_UNQUOTED([GETTIMEOFDAY_TIMEZONE], [$gl_gettimeofday_timezone], [Define this to 'void' or 'struct timezone' to match the system's declaration of the second argument to gettimeofday.]) ]) dnl See if gettimeofday clobbers the static buffer that localtime uses dnl for its return value. The gettimeofday function from Mac OS X 10.0.4 dnl (i.e., Darwin 1.3.7) has this problem. dnl dnl If it does, then arrange to use gettimeofday and localtime only via dnl the wrapper functions that work around the problem. AC_DEFUN([gl_FUNC_GETTIMEOFDAY_CLOBBER], [ AC_REQUIRE([gl_HEADER_SYS_TIME_H]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS]) AC_CACHE_CHECK([whether gettimeofday clobbers localtime buffer], [gl_cv_func_gettimeofday_clobber], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include #include #include #include ]], [[ time_t t = 0; struct tm *lt; struct tm saved_lt; struct timeval tv; lt = localtime (&t); saved_lt = *lt; gettimeofday (&tv, NULL); return memcmp (lt, &saved_lt, sizeof (struct tm)) != 0; ]])], [gl_cv_func_gettimeofday_clobber=no], [gl_cv_func_gettimeofday_clobber=yes], [# When cross-compiling: case "$host_os" in # Guess all is fine on glibc systems. *-gnu* | gnu*) gl_cv_func_gettimeofday_clobber="guessing no" ;; # Guess all is fine on musl systems. *-musl*) gl_cv_func_gettimeofday_clobber="guessing no" ;; # Guess no on native Windows. mingw*) gl_cv_func_gettimeofday_clobber="guessing no" ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_gettimeofday_clobber="$gl_cross_guess_inverted" ;; esac ])]) case "$gl_cv_func_gettimeofday_clobber" in *yes) REPLACE_GETTIMEOFDAY=1 AC_DEFINE([GETTIMEOFDAY_CLOBBERS_LOCALTIME], [1], [Define if gettimeofday clobbers the localtime buffer.]) gl_LOCALTIME_BUFFER_NEEDED ;; esac ]) # Prerequisites of lib/gettimeofday.c. AC_DEFUN([gl_PREREQ_GETTIMEOFDAY], [:]) # glibc21.m4 serial 5 dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Test for the GNU C Library, version 2.1 or newer, or uClibc. # From Bruno Haible. AC_DEFUN([gl_GLIBC21], [ AC_CACHE_CHECK([whether we are using the GNU C Library >= 2.1 or uClibc], [ac_cv_gnu_library_2_1], [AC_EGREP_CPP([Lucky], [ #include #ifdef __GNU_LIBRARY__ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2) Lucky GNU user #endif #endif #ifdef __UCLIBC__ Lucky user #endif ], [ac_cv_gnu_library_2_1=yes], [ac_cv_gnu_library_2_1=no]) ] ) AC_SUBST([GLIBC21]) GLIBC21="$ac_cv_gnu_library_2_1" ] ) # glob.m4 serial 23 dnl Copyright (C) 2005-2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # The glob module assumes you want GNU glob, with glob_pattern_p etc, # rather than vanilla POSIX glob. This means your code should # always include for the glob prototypes. AC_DEFUN([gl_GLOB], [ AC_REQUIRE([gl_GLOB_H]) AC_CHECK_FUNCS_ONCE([glob glob_pattern_p]) if test $ac_cv_func_glob = no; then HAVE_GLOB=0 else AC_CACHE_CHECK([for GNU glob interface version 1 or 2], [gl_cv_gnu_glob_interface_version_1_2], [ AC_COMPILE_IFELSE([AC_LANG_SOURCE( [[#include char a[_GNU_GLOB_INTERFACE_VERSION == 1 || _GNU_GLOB_INTERFACE_VERSION == 2 ? 1 : -1];]])], [gl_cv_gnu_glob_interface_version_1_2=yes], [gl_cv_gnu_glob_interface_version_1_2=no])]) if test "$gl_cv_gnu_glob_interface_version_1_2" = "no"; then REPLACE_GLOB=1 fi if test $REPLACE_GLOB = 0; then AC_CACHE_CHECK([whether glob lists broken symlinks], [gl_cv_glob_lists_symlinks], [if test $cross_compiling != yes; then if ln -s conf-doesntexist conf$$-globtest 2>/dev/null; then gl_cv_glob_lists_symlinks=maybe else # If we can't make a symlink, then we cannot test this issue. Be # pessimistic about this. gl_cv_glob_lists_symlinks=no fi if test $gl_cv_glob_lists_symlinks = maybe; then AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include #include ]], [[glob_t found; if (glob ("conf*-globtest", 0, NULL, &found) == GLOB_NOMATCH) return 1; ]])], [gl_cv_glob_lists_symlinks=yes], [gl_cv_glob_lists_symlinks=no], [dnl We don't get here. : ]) fi rm -f conf$$-globtest else gl_cv_glob_lists_symlinks="$gl_cross_guess_normal" fi ]) case "$gl_cv_glob_lists_symlinks" in *yes) ;; *) REPLACE_GLOB=1 ;; esac fi fi if test $ac_cv_func_glob_pattern_p = no; then HAVE_GLOB_PATTERN_P=0 else if test $REPLACE_GLOB = 1; then REPLACE_GLOB_PATTERN_P=1 fi fi if test $HAVE_GLOB = 0 || test $REPLACE_GLOB = 1; then gl_REPLACE_GLOB_H fi ]) # Prerequisites of lib/glob.c and lib/globfree.c. AC_DEFUN([gl_PREREQ_GLOB], [ AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE]) AC_CHECK_HEADERS_ONCE([unistd.h]) AC_CHECK_FUNCS_ONCE([getlogin_r getpwnam_r]) ]) # glob_h.m4 serial 5 dnl Copyright (C) 2018-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_DEFUN_ONCE([gl_GLOB_H], [ AC_REQUIRE([gl_GLOB_H_DEFAULTS]) m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])]) AC_REQUIRE([AC_C_RESTRICT]) AC_CHECK_HEADERS_ONCE([glob.h]) gl_CHECK_NEXT_HEADERS([glob.h]) if test $ac_cv_header_glob_h = yes; then HAVE_GLOB_H=1 else HAVE_GLOB_H=0 fi AC_SUBST([HAVE_GLOB_H]) m4_ifdef([gl_POSIXCHECK], [GLOB_H=glob.h], [GLOB_H='' if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then dnl Override always, to support the C++ GNULIB_NAMESPACE. GLOB_H=glob.h else if test $ac_cv_header_glob_h != yes; then dnl Provide a substitute file. GLOB_H=glob.h fi fi ]) AC_SUBST([GLOB_H]) AM_CONDITIONAL([GL_GENERATE_GLOB_H], [test -n "$GLOB_H"]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [glob globfree glob_pattern_p]) ]) dnl Unconditionally enables the replacement of . AC_DEFUN([gl_REPLACE_GLOB_H], [ AC_REQUIRE([gl_GLOB_H_DEFAULTS]) GLOB_H='glob.h' AM_CONDITIONAL([GL_GENERATE_GLOB_H], [test -n "$GLOB_H"]) ]) AC_DEFUN([gl_GLOB_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_GLOB_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_GLOB_H_DEFAULTS], [ GNULIB_GLOB=0; AC_SUBST([GNULIB_GLOB]) dnl Assume POSIX and GNU behavior unless another module says otherwise. HAVE_GLOB=1; AC_SUBST([HAVE_GLOB]) HAVE_GLOB_PATTERN_P=1; AC_SUBST([HAVE_GLOB_PATTERN_P]) REPLACE_GLOB=0; AC_SUBST([REPLACE_GLOB]) REPLACE_GLOB_PATTERN_P=0; AC_SUBST([REPLACE_GLOB_PATTERN_P]) ]) # gnulib-common.m4 serial 48 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_PREREQ([2.62]) # gl_COMMON # is expanded unconditionally through gnulib-tool magic. AC_DEFUN([gl_COMMON], [ dnl Use AC_REQUIRE here, so that the code is expanded once only. AC_REQUIRE([gl_00GNULIB]) AC_REQUIRE([gl_COMMON_BODY]) AC_REQUIRE([gl_ZZGNULIB]) ]) AC_DEFUN([gl_COMMON_BODY], [ AH_VERBATIM([_Noreturn], [/* The _Noreturn keyword of C11. */ #ifndef _Noreturn # if (defined __cplusplus \ && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \ || (defined _MSC_VER && 1900 <= _MSC_VER)) \ && 0) /* [[noreturn]] is not practically usable, because with it the syntax extern _Noreturn void func (...); would not be valid; such a declaration would only be valid with 'extern' and '_Noreturn' swapped, or without the 'extern' keyword. However, some AIX system header files and several gnulib header files use precisely this syntax with 'extern'. */ # define _Noreturn [[noreturn]] # elif ((!defined __cplusplus || defined __clang__) \ && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \ || 4 < __GNUC__ + (7 <= __GNUC_MINOR__) \ || (defined __apple_build_version__ \ ? 6000000 <= __apple_build_version__ \ : 3 < __clang_major__ + (5 <= __clang_minor__)))) /* _Noreturn works as-is. */ # elif 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 0x5110 <= __SUNPRO_C # define _Noreturn __attribute__ ((__noreturn__)) # elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0) # define _Noreturn __declspec (noreturn) # else # define _Noreturn # endif #endif ]) AH_VERBATIM([isoc99_inline], [/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of earlier versions), but does not display it by setting __GNUC_STDC_INLINE__. __APPLE__ && __MACH__ test for Mac OS X. __APPLE_CC__ tests for the Apple compiler and its version. __STDC_VERSION__ tests for the C99 mode. */ #if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__ # define __GNUC_STDC_INLINE__ 1 #endif]) AH_VERBATIM([unused_parameter], [/* Define as a marker that can be attached to declarations that might not be used. This helps to reduce warnings, such as from GCC -Wunused-parameter. */ #if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) # define _GL_UNUSED __attribute__ ((__unused__)) #else # define _GL_UNUSED #endif /* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name is a misnomer outside of parameter lists. */ #define _UNUSED_PARAMETER_ _GL_UNUSED /* gcc supports the "unused" attribute on possibly unused labels, and g++ has since version 4.5. Note to support C++ as well as C, _GL_UNUSED_LABEL should be used with a trailing ; */ #if !defined __cplusplus || __GNUC__ > 4 \ || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) # define _GL_UNUSED_LABEL _GL_UNUSED #else # define _GL_UNUSED_LABEL #endif /* The __pure__ attribute was added in gcc 2.96. */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) # define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) #else # define _GL_ATTRIBUTE_PURE /* empty */ #endif /* The __const__ attribute was added in gcc 2.95. */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) # define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) #else # define _GL_ATTRIBUTE_CONST /* empty */ #endif /* The __malloc__ attribute was added in gcc 3. */ #if 3 <= __GNUC__ # define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) #else # define _GL_ATTRIBUTE_MALLOC /* empty */ #endif ]) AH_VERBATIM([async_safe], [/* The _GL_ASYNC_SAFE marker should be attached to functions that are signal handlers (for signals other than SIGABRT, SIGPIPE) or can be invoked from such signal handlers. Such functions have some restrictions: * All functions that it calls should be marked _GL_ASYNC_SAFE as well, or should be listed as async-signal-safe in POSIX section 2.4.3. Note that malloc(), sprintf(), and fwrite(), in particular, are NOT async-signal-safe. * All memory locations (variables and struct fields) that these functions access must be marked 'volatile'. This holds for both read and write accesses. Otherwise the compiler might optimize away stores to and reads from such locations that occur in the program, depending on its data flow analysis. For example, when the program contains a loop that is intended to inspect a variable set from within a signal handler while (!signal_occurred) ; the compiler is allowed to transform this into an endless loop if the variable 'signal_occurred' is not declared 'volatile'. Additionally, recall that: * A signal handler should not modify errno (except if it is a handler for a fatal signal and ends by raising the same signal again, thus provoking the termination of the process). If it invokes a function that may clobber errno, it needs to save and restore the value of errno. */ #define _GL_ASYNC_SAFE ]) dnl Hint which direction to take regarding cross-compilation guesses: dnl When a user installs a program on a platform they are not intimately dnl familiar with, --enable-cross-guesses=conservative is the appropriate dnl choice. It implements the "If we don't know, assume the worst" principle. dnl However, when an operating system developer (on a platform which is not dnl yet known to gnulib) builds packages for their platform, they want to dnl expose, not hide, possible platform bugs; in this case, dnl --enable-cross-guesses=risky is the appropriate choice. dnl Sets the variables dnl gl_cross_guess_normal (to be used when 'yes' is good and 'no' is bad), dnl gl_cross_guess_inverted (to be used when 'no' is good and 'yes' is bad). AC_ARG_ENABLE([cross-guesses], [AS_HELP_STRING([--enable-cross-guesses={conservative|risky}], [specify policy for cross-compilation guesses])], [if test "x$enableval" != xconservative && test "x$enableval" != xrisky; then AC_MSG_WARN([invalid argument supplied to --enable-cross-guesses]) enableval=conservative fi gl_cross_guesses="$enableval"], [gl_cross_guesses=conservative]) if test $gl_cross_guesses = risky; then gl_cross_guess_normal="guessing yes" gl_cross_guess_inverted="guessing no" else gl_cross_guess_normal="guessing no" gl_cross_guess_inverted="guessing yes" fi dnl Preparation for running test programs: dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not dnl to /dev/tty, so they can be redirected to log files. Such diagnostics dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N. LIBC_FATAL_STDERR_=1 export LIBC_FATAL_STDERR_ ]) # gl_MODULE_INDICATOR_CONDITION # expands to a C preprocessor expression that evaluates to 1 or 0, depending # whether a gnulib module that has been requested shall be considered present # or not. m4_define([gl_MODULE_INDICATOR_CONDITION], [1]) # gl_MODULE_INDICATOR_SET_VARIABLE([modulename]) # sets the shell variable that indicates the presence of the given module to # a C preprocessor expression that will evaluate to 1. AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE], [ gl_MODULE_INDICATOR_SET_VARIABLE_AUX( [GNULIB_[]m4_translit([[$1]], [abcdefghijklmnopqrstuvwxyz./-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])], [gl_MODULE_INDICATOR_CONDITION]) ]) # gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable]) # modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION. # The shell variable's value is a C preprocessor expression that evaluates # to 0 or 1. AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX], [ m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1], [ dnl Simplify the expression VALUE || 1 to 1. $1=1 ], [gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1], [gl_MODULE_INDICATOR_CONDITION])]) ]) # gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition]) # modifies the shell variable to include the given condition. The shell # variable's value is a C preprocessor expression that evaluates to 0 or 1. AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR], [ dnl Simplify the expression 1 || CONDITION to 1. if test "$[]$1" != 1; then dnl Simplify the expression 0 || CONDITION to CONDITION. if test "$[]$1" = 0; then $1=$2 else $1="($[]$1 || $2)" fi fi ]) # gl_MODULE_INDICATOR([modulename]) # defines a C macro indicating the presence of the given module # in a location where it can be used. # | Value | Value | # | in lib/ | in tests/ | # --------------------------------------------+---------+-----------+ # Module present among main modules: | 1 | 1 | # --------------------------------------------+---------+-----------+ # Module present among tests-related modules: | 0 | 1 | # --------------------------------------------+---------+-----------+ # Module not present at all: | 0 | 0 | # --------------------------------------------+---------+-----------+ AC_DEFUN([gl_MODULE_INDICATOR], [ AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]], [abcdefghijklmnopqrstuvwxyz./-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [gl_MODULE_INDICATOR_CONDITION], [Define to a C preprocessor expression that evaluates to 1 or 0, depending whether the gnulib module $1 shall be considered present.]) ]) # gl_MODULE_INDICATOR_FOR_TESTS([modulename]) # defines a C macro indicating the presence of the given module # in lib or tests. This is useful to determine whether the module # should be tested. # | Value | Value | # | in lib/ | in tests/ | # --------------------------------------------+---------+-----------+ # Module present among main modules: | 1 | 1 | # --------------------------------------------+---------+-----------+ # Module present among tests-related modules: | 1 | 1 | # --------------------------------------------+---------+-----------+ # Module not present at all: | 0 | 0 | # --------------------------------------------+---------+-----------+ AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], [ AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]], [abcdefghijklmnopqrstuvwxyz./-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1], [Define to 1 when the gnulib module $1 should be tested.]) ]) # gl_ASSERT_NO_GNULIB_POSIXCHECK # asserts that there will never be a need to #define GNULIB_POSIXCHECK. # and thereby enables an optimization of configure and config.h. # Used by Emacs. AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK], [ dnl Override gl_WARN_ON_USE_PREPARE. dnl But hide this definition from 'aclocal'. AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], []) ]) # gl_ASSERT_NO_GNULIB_TESTS # asserts that there will be no gnulib tests in the scope of the configure.ac # and thereby enables an optimization of config.h. # Used by Emacs. AC_DEFUN([gl_ASSERT_NO_GNULIB_TESTS], [ dnl Override gl_MODULE_INDICATOR_FOR_TESTS. AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], []) ]) # Test whether exists. # Set HAVE_FEATURES_H. AC_DEFUN([gl_FEATURES_H], [ AC_CHECK_HEADERS_ONCE([features.h]) if test $ac_cv_header_features_h = yes; then HAVE_FEATURES_H=1 else HAVE_FEATURES_H=0 fi AC_SUBST([HAVE_FEATURES_H]) ]) # AS_VAR_IF(VAR, VALUE, [IF-MATCH], [IF-NOT-MATCH]) # ---------------------------------------------------- # Backport of autoconf-2.63b's macro. # Remove this macro when we can assume autoconf >= 2.64. m4_ifndef([AS_VAR_IF], [m4_define([AS_VAR_IF], [AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])]) # gl_PROG_CC_C99 # Modifies the value of the shell variable CC in an attempt to make $CC # understand ISO C99 source code. # This is like AC_PROG_CC_C99, except that # - AC_PROG_CC_C99 does not mix well with AC_PROG_CC_STDC # , # but many more packages use AC_PROG_CC_STDC than AC_PROG_CC_C99 # . # Remaining problems: # - When AC_PROG_CC_STDC is invoked twice, it adds the C99 enabling options # to CC twice # . # - AC_PROG_CC_STDC is likely to change now that C11 is an ISO standard. AC_DEFUN([gl_PROG_CC_C99], [ dnl Change that version number to the minimum Autoconf version that supports dnl mixing AC_PROG_CC_C99 calls with AC_PROG_CC_STDC calls. m4_version_prereq([9.0], [AC_REQUIRE([AC_PROG_CC_C99])], [AC_REQUIRE([AC_PROG_CC_STDC])]) ]) # gl_PROG_AR_RANLIB # Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler. # The user can set the variables AR, ARFLAGS, RANLIB if he wants to override # the values. AC_DEFUN([gl_PROG_AR_RANLIB], [ dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler dnl as "cc", and GCC as "gcc". They have different object file formats and dnl library formats. In particular, the GNU binutils programs ar and ranlib dnl produce libraries that work only with gcc, not with cc. AC_REQUIRE([AC_PROG_CC]) dnl The '][' hides this use from 'aclocal'. AC_BEFORE([$0], [A][M_PROG_AR]) AC_CACHE_CHECK([for Minix Amsterdam compiler], [gl_cv_c_amsterdam_compiler], [ AC_EGREP_CPP([Amsterdam], [ #ifdef __ACK__ Amsterdam #endif ], [gl_cv_c_amsterdam_compiler=yes], [gl_cv_c_amsterdam_compiler=no]) ]) dnl Don't compete with AM_PROG_AR's decision about AR/ARFLAGS if we are not dnl building with __ACK__. if test $gl_cv_c_amsterdam_compiler = yes; then if test -z "$AR"; then AR='cc -c.a' fi if test -z "$ARFLAGS"; then ARFLAGS='-o' fi else dnl AM_PROG_AR was added in automake v1.11.2. AM_PROG_AR does not AC_SUBST dnl ARFLAGS variable (it is filed into Makefile.in directly by automake dnl script on-demand, if not specified by ./configure of course). dnl Don't AC_REQUIRE the AM_PROG_AR otherwise the code for __ACK__ above dnl will be ignored. Also, pay attention to call AM_PROG_AR in else block dnl because AM_PROG_AR is written so it could re-set AR variable even for dnl __ACK__. It may seem like its easier to avoid calling the macro here, dnl but we need to AC_SUBST both AR/ARFLAGS (thus those must have some good dnl default value and automake should usually know them). dnl dnl The '][' hides this use from 'aclocal'. m4_ifdef([A][M_PROG_AR], [A][M_PROG_AR], [:]) fi dnl In case the code above has not helped with setting AR/ARFLAGS, use dnl Automake-documented default values for AR and ARFLAGS, but prefer dnl ${host}-ar over ar (useful for cross-compiling). AC_CHECK_TOOL([AR], [ar], [ar]) if test -z "$ARFLAGS"; then ARFLAGS='cr' fi AC_SUBST([AR]) AC_SUBST([ARFLAGS]) if test -z "$RANLIB"; then if test $gl_cv_c_amsterdam_compiler = yes; then RANLIB=':' else dnl Use the ranlib program if it is available. AC_PROG_RANLIB fi fi AC_SUBST([RANLIB]) ]) # AC_C_RESTRICT # This definition is copied from post-2.69 Autoconf and overrides the # AC_C_RESTRICT macro from autoconf 2.60..2.69. It can be removed # once autoconf >= 2.70 can be assumed. It's painful to check version # numbers, and in practice this macro is more up-to-date than Autoconf # is, so override Autoconf unconditionally. AC_DEFUN([AC_C_RESTRICT], [AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict], [ac_cv_c_restrict=no # The order here caters to the fact that C++ does not require restrict. for ac_kw in __restrict __restrict__ _Restrict restrict; do AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[typedef int *int_ptr; int foo (int_ptr $ac_kw ip) { return ip[0]; } int bar (int [$ac_kw]); /* Catch GCC bug 14050. */ int bar (int ip[$ac_kw]) { return ip[0]; } ]], [[int s[1]; int *$ac_kw t = s; t[0] = 0; return foo (t) + bar (t); ]])], [ac_cv_c_restrict=$ac_kw]) test "$ac_cv_c_restrict" != no && break done ]) AH_VERBATIM([restrict], [/* Define to the equivalent of the C99 'restrict' keyword, or to nothing if this is not supported. Do not define if restrict is supported directly. */ #undef restrict /* Work around a bug in older versions of Sun C++, which did not #define __restrict__ or support _Restrict or __restrict__ even though the corresponding Sun C compiler ended up with "#define restrict _Restrict" or "#define restrict __restrict__" in the previous line. This workaround can be removed once we assume Oracle Developer Studio 12.5 (2016) or later. */ #if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__ # define _Restrict # define __restrict__ #endif]) case $ac_cv_c_restrict in restrict) ;; no) AC_DEFINE([restrict], []) ;; *) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;; esac ])# AC_C_RESTRICT # gl_BIGENDIAN # is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd. # Note that AC_REQUIRE([AC_C_BIGENDIAN]) does not work reliably because some # macros invoke AC_C_BIGENDIAN with arguments. AC_DEFUN([gl_BIGENDIAN], [ AC_C_BIGENDIAN ]) # gl_CACHE_VAL_SILENT(cache-id, command-to-set-it) # is like AC_CACHE_VAL(cache-id, command-to-set-it), except that it does not # output a spurious "(cached)" mark in the midst of other configure output. # This macro should be used instead of AC_CACHE_VAL when it is not surrounded # by an AC_MSG_CHECKING/AC_MSG_RESULT pair. AC_DEFUN([gl_CACHE_VAL_SILENT], [ saved_as_echo_n="$as_echo_n" as_echo_n=':' AC_CACHE_VAL([$1], [$2]) as_echo_n="$saved_as_echo_n" ]) # AS_VAR_COPY was added in autoconf 2.63b m4_define_default([AS_VAR_COPY], [AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])]) # DO NOT EDIT! GENERATED AUTOMATICALLY! # Copyright (C) 2002-2020 Free Software Foundation, Inc. # # This file is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This file is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this file. If not, see . # # As a special exception to the GNU General Public License, # this file may be distributed as part of a program that # contains a configuration script generated by Autoconf, under # the same distribution terms as the rest of that program. # # Generated by gnulib-tool. # # This file represents the compiled summary of the specification in # gnulib-cache.m4. It lists the computed macro invocations that need # to be invoked from configure.ac. # In projects that use version control, this file can be treated like # other built files. # This macro should be invoked from ./configure.ac, in the section # "Checks for programs", right after AC_PROG_CC, and certainly before # any checks for libraries, header files, types and library functions. AC_DEFUN([gl_EARLY], [ m4_pattern_forbid([^gl_[A-Z]])dnl the gnulib macro namespace m4_pattern_allow([^gl_ES$])dnl a valid locale name m4_pattern_allow([^gl_LIBOBJS$])dnl a variable m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable # Pre-early section. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gl_PROG_AR_RANLIB]) AC_REQUIRE([AM_PROG_CC_C_O]) # Code from module absolute-header: # Code from module alloca: # Code from module alloca-opt: # Code from module btowc: # Code from module builtin-expect: # Code from module c99: # Code from module clock-time: # Code from module closedir: # Code from module ctype: # Code from module d-type: # Code from module dirent: # Code from module dirfd: # Code from module dosname: # Code from module errno: # Code from module extensions: # Code from module extern-inline: # Code from module fcntl-h: # Code from module filename: # Code from module flexmember: # Code from module float: # Code from module fnmatch: # Code from module fnmatch-h: # Code from module fpieee: AC_REQUIRE([gl_FP_IEEE]) # Code from module fpucw: # Code from module frexp-nolibm: # Code from module frexpl-nolibm: # Code from module fstat: # Code from module futimens: # Code from module getdelim: # Code from module getline: # Code from module getlogin_r: # Code from module getopt-gnu: # Code from module getopt-posix: # Code from module gettext-h: # Code from module gettime: # Code from module gettimeofday: # Code from module glob: # Code from module glob-h: # Code from module hard-locale: # Code from module include_next: # Code from module intprops: # Code from module inttypes-incomplete: # Code from module isblank: # Code from module isnand-nolibm: # Code from module isnanf-nolibm: # Code from module isnanl-nolibm: # Code from module iswblank: # Code from module langinfo: # Code from module largefile: AC_REQUIRE([AC_SYS_LARGEFILE]) # Code from module libc-config: # Code from module limits-h: # Code from module localcharset: # Code from module locale: # Code from module localeconv: # Code from module localtime-buffer: # Code from module lock: # Code from module lstat: # Code from module malloc-posix: # Code from module malloca: # Code from module math: # Code from module mbrtowc: # Code from module mbsinit: # Code from module mbsrtowcs: # Code from module mbtowc: # Code from module memchr: # Code from module mempcpy: # Code from module msvc-inval: # Code from module msvc-nothrow: # Code from module multiarch: # Code from module nl_langinfo: # Code from module nocrash: # Code from module opendir: # Code from module pathmax: # Code from module printf-frexp: # Code from module printf-frexpl: # Code from module printf-safe: # Code from module raise: # Code from module readdir: # Code from module regex: # Code from module scratch_buffer: # Code from module setlocale-null: # Code from module sigaction: # Code from module signal-h: # Code from module signbit: # Code from module sigprocmask: # Code from module size_max: # Code from module snippet/_Noreturn: # Code from module snippet/arg-nonnull: # Code from module snippet/c++defs: # Code from module snippet/warn-on-use: # Code from module snprintf: # Code from module snprintf-posix: # Code from module ssize_t: # Code from module stat: # Code from module stat-time: # Code from module std-gnu11: # Code from module stdarg: dnl Some compilers (e.g., AIX 5.3 cc) need to be in c99 mode dnl for the builtin va_copy to work. gl_PROG_CC_C99 arranges for this. gl_PROG_CC_C99 # Code from module stdbool: # Code from module stddef: # Code from module stdint: # Code from module stdio: # Code from module stdlib: # Code from module strcase: # Code from module strcasestr-simple: # Code from module streq: # Code from module string: # Code from module strings: # Code from module strnlen: # Code from module strnlen1: # Code from module sys_stat: # Code from module sys_time: # Code from module sys_types: # Code from module sys_wait: # Code from module threadlib: gl_THREADLIB_EARLY # Code from module time: # Code from module timespec: # Code from module unistd: # Code from module unitypes: # Code from module uniwidth/base: # Code from module uniwidth/width: # Code from module utime: # Code from module utime-h: # Code from module utimens: # Code from module vasnprintf: # Code from module verify: # Code from module vsnprintf: # Code from module vsnprintf-posix: # Code from module wchar: # Code from module wcrtomb: # Code from module wctype-h: # Code from module wcwidth: # Code from module windows-mutex: # Code from module windows-once: # Code from module windows-recmutex: # Code from module windows-rwlock: # Code from module xalloc-oversized: # Code from module xsize: ]) # This macro should be invoked from ./configure.ac, in the section # "Check for header files, types and library functions". AC_DEFUN([gl_INIT], [ AM_CONDITIONAL([GL_COND_LIBTOOL], [false]) gl_cond_libtool=false gl_libdeps= gl_ltlibdeps= gl_m4_base='m4' m4_pushdef([AC_LIBOBJ], m4_defn([gl_LIBOBJ])) m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gl_REPLACE_FUNCS])) m4_pushdef([AC_LIBSOURCES], m4_defn([gl_LIBSOURCES])) m4_pushdef([gl_LIBSOURCES_LIST], []) m4_pushdef([gl_LIBSOURCES_DIR], []) gl_COMMON gl_source_base='lib' gl_FUNC_ALLOCA gl_FUNC_BTOWC if test $HAVE_BTOWC = 0 || test $REPLACE_BTOWC = 1; then AC_LIBOBJ([btowc]) gl_PREREQ_BTOWC fi gl_WCHAR_MODULE_INDICATOR([btowc]) gl___BUILTIN_EXPECT gl_CLOCK_TIME gl_FUNC_CLOSEDIR if test $HAVE_CLOSEDIR = 0 || test $REPLACE_CLOSEDIR = 1; then AC_LIBOBJ([closedir]) fi gl_DIRENT_MODULE_INDICATOR([closedir]) gl_CTYPE_H gl_CHECK_TYPE_STRUCT_DIRENT_D_TYPE gl_DIRENT_H gl_FUNC_DIRFD if test $ac_cv_func_dirfd = no && test $gl_cv_func_dirfd_macro = no \ || test $REPLACE_DIRFD = 1; then AC_LIBOBJ([dirfd]) gl_PREREQ_DIRFD fi gl_DIRENT_MODULE_INDICATOR([dirfd]) gl_HEADER_ERRNO_H AC_REQUIRE([gl_EXTERN_INLINE]) gl_FCNTL_H AC_C_FLEXIBLE_ARRAY_MEMBER gl_FLOAT_H if test $REPLACE_FLOAT_LDBL = 1; then AC_LIBOBJ([float]) fi if test $REPLACE_ITOLD = 1; then AC_LIBOBJ([itold]) fi gl_FUNC_FNMATCH_POSIX if test $HAVE_FNMATCH = 0 || test $REPLACE_FNMATCH = 1; then AC_LIBOBJ([fnmatch]) gl_PREREQ_FNMATCH fi gl_FNMATCH_MODULE_INDICATOR([fnmatch]) gl_FNMATCH_H gl_FUNC_FREXP_NO_LIBM if test $gl_func_frexp_no_libm != yes; then AC_LIBOBJ([frexp]) fi gl_MATH_MODULE_INDICATOR([frexp]) gl_FUNC_FREXPL_NO_LIBM if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl_no_libm = no; then AC_LIBOBJ([frexpl]) fi gl_MATH_MODULE_INDICATOR([frexpl]) gl_FUNC_FSTAT if test $REPLACE_FSTAT = 1; then AC_LIBOBJ([fstat]) case "$host_os" in mingw*) AC_LIBOBJ([stat-w32]) ;; esac gl_PREREQ_FSTAT fi gl_SYS_STAT_MODULE_INDICATOR([fstat]) gl_FUNC_FUTIMENS if test $HAVE_FUTIMENS = 0 || test $REPLACE_FUTIMENS = 1; then AC_LIBOBJ([futimens]) fi gl_SYS_STAT_MODULE_INDICATOR([futimens]) gl_FUNC_GETDELIM if test $HAVE_GETDELIM = 0 || test $REPLACE_GETDELIM = 1; then AC_LIBOBJ([getdelim]) gl_PREREQ_GETDELIM fi gl_STDIO_MODULE_INDICATOR([getdelim]) gl_FUNC_GETLINE if test $REPLACE_GETLINE = 1; then AC_LIBOBJ([getline]) gl_PREREQ_GETLINE fi gl_STDIO_MODULE_INDICATOR([getline]) gl_FUNC_GETLOGIN_R if test $HAVE_GETLOGIN_R = 0 || test $REPLACE_GETLOGIN_R = 1; then AC_LIBOBJ([getlogin_r]) gl_PREREQ_GETLOGIN_R fi gl_UNISTD_MODULE_INDICATOR([getlogin_r]) AC_REQUIRE([gl_LIB_GETLOGIN]) gl_FUNC_GETOPT_GNU dnl Because of the way gl_FUNC_GETOPT_GNU is implemented (the gl_getopt_required dnl mechanism), there is no need to do any AC_LIBOBJ or AC_SUBST here; they are dnl done in the getopt-posix module. gl_FUNC_GETOPT_POSIX if test $REPLACE_GETOPT = 1; then AC_LIBOBJ([getopt]) AC_LIBOBJ([getopt1]) dnl Arrange for unistd.h to include getopt.h. GNULIB_GL_UNISTD_H_GETOPT=1 fi AC_SUBST([GNULIB_GL_UNISTD_H_GETOPT]) gl_UNISTD_MODULE_INDICATOR([getopt-posix]) AC_SUBST([LIBINTL]) AC_SUBST([LTLIBINTL]) gl_GETTIME gl_FUNC_GETTIMEOFDAY if test $HAVE_GETTIMEOFDAY = 0 || test $REPLACE_GETTIMEOFDAY = 1; then AC_LIBOBJ([gettimeofday]) gl_PREREQ_GETTIMEOFDAY fi gl_SYS_TIME_MODULE_INDICATOR([gettimeofday]) gl_GLOB if test $HAVE_GLOB = 0 || test $REPLACE_GLOB = 1; then AC_LIBOBJ([glob]) AC_LIBOBJ([globfree]) gl_PREREQ_GLOB fi if test $HAVE_GLOB_PATTERN_P = 0 || test $REPLACE_GLOB_PATTERN_P = 1; then AC_LIBOBJ([glob_pattern_p]) fi gl_GLOB_MODULE_INDICATOR([glob]) gl_GLOB_H AC_REQUIRE([gl_FUNC_SETLOCALE_NULL]) LIB_HARD_LOCALE="$LIB_SETLOCALE_NULL" AC_SUBST([LIB_HARD_LOCALE]) gl_INTTYPES_INCOMPLETE gl_FUNC_ISBLANK if test $HAVE_ISBLANK = 0; then AC_LIBOBJ([isblank]) fi gl_MODULE_INDICATOR([isblank]) gl_CTYPE_MODULE_INDICATOR([isblank]) gl_FUNC_ISNAND_NO_LIBM if test $gl_func_isnand_no_libm != yes; then AC_LIBOBJ([isnand]) gl_PREREQ_ISNAND fi gl_FUNC_ISNANF_NO_LIBM if test $gl_func_isnanf_no_libm != yes; then AC_LIBOBJ([isnanf]) gl_PREREQ_ISNANF fi gl_FUNC_ISNANL_NO_LIBM if test $gl_func_isnanl_no_libm != yes; then AC_LIBOBJ([isnanl]) gl_PREREQ_ISNANL fi gl_FUNC_ISWBLANK if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then : else if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then AC_LIBOBJ([iswblank]) fi fi gl_WCTYPE_MODULE_INDICATOR([iswblank]) gl_LANGINFO_H AC_REQUIRE([gl_LARGEFILE]) gl___INLINE gl_LIMITS_H gl_LOCALCHARSET dnl For backward compatibility. Some packages still use this. LOCALCHARSET_TESTS_ENVIRONMENT= AC_SUBST([LOCALCHARSET_TESTS_ENVIRONMENT]) gl_LOCALE_H gl_FUNC_LOCALECONV if test $REPLACE_LOCALECONV = 1; then AC_LIBOBJ([localeconv]) gl_PREREQ_LOCALECONV fi gl_LOCALE_MODULE_INDICATOR([localeconv]) AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS]) AC_LIBOBJ([localtime-buffer]) gl_LOCK gl_MODULE_INDICATOR([lock]) gl_FUNC_LSTAT if test $REPLACE_LSTAT = 1; then AC_LIBOBJ([lstat]) gl_PREREQ_LSTAT fi gl_SYS_STAT_MODULE_INDICATOR([lstat]) gl_FUNC_MALLOC_POSIX if test $REPLACE_MALLOC = 1; then AC_LIBOBJ([malloc]) fi gl_STDLIB_MODULE_INDICATOR([malloc-posix]) gl_MALLOCA gl_MATH_H gl_FUNC_MBRTOWC if test $HAVE_MBRTOWC = 0 || test $REPLACE_MBRTOWC = 1; then AC_LIBOBJ([mbrtowc]) if test $REPLACE_MBSTATE_T = 1; then AC_LIBOBJ([lc-charset-dispatch]) AC_LIBOBJ([mbtowc-lock]) gl_PREREQ_MBTOWC_LOCK fi gl_PREREQ_MBRTOWC fi gl_WCHAR_MODULE_INDICATOR([mbrtowc]) gl_FUNC_MBSINIT if test $HAVE_MBSINIT = 0 || test $REPLACE_MBSINIT = 1; then AC_LIBOBJ([mbsinit]) gl_PREREQ_MBSINIT fi gl_WCHAR_MODULE_INDICATOR([mbsinit]) gl_FUNC_MBSRTOWCS if test $HAVE_MBSRTOWCS = 0 || test $REPLACE_MBSRTOWCS = 1; then AC_LIBOBJ([mbsrtowcs]) AC_LIBOBJ([mbsrtowcs-state]) gl_PREREQ_MBSRTOWCS fi gl_WCHAR_MODULE_INDICATOR([mbsrtowcs]) gl_FUNC_MBTOWC if test $HAVE_MBTOWC = 0 || test $REPLACE_MBTOWC = 1; then AC_LIBOBJ([mbtowc]) gl_PREREQ_MBTOWC fi gl_STDLIB_MODULE_INDICATOR([mbtowc]) gl_FUNC_MEMCHR if test $HAVE_MEMCHR = 0 || test $REPLACE_MEMCHR = 1; then AC_LIBOBJ([memchr]) gl_PREREQ_MEMCHR fi gl_STRING_MODULE_INDICATOR([memchr]) gl_FUNC_MEMPCPY if test $HAVE_MEMPCPY = 0; then AC_LIBOBJ([mempcpy]) gl_PREREQ_MEMPCPY fi gl_STRING_MODULE_INDICATOR([mempcpy]) AC_REQUIRE([gl_MSVC_INVAL]) if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then AC_LIBOBJ([msvc-inval]) fi AC_REQUIRE([gl_MSVC_NOTHROW]) if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then AC_LIBOBJ([msvc-nothrow]) fi gl_MODULE_INDICATOR([msvc-nothrow]) gl_MULTIARCH gl_FUNC_NL_LANGINFO if test $HAVE_NL_LANGINFO = 0 || test $REPLACE_NL_LANGINFO = 1; then AC_LIBOBJ([nl_langinfo]) fi gl_LANGINFO_MODULE_INDICATOR([nl_langinfo]) gl_FUNC_OPENDIR if test $HAVE_OPENDIR = 0 || test $REPLACE_OPENDIR = 1; then AC_LIBOBJ([opendir]) fi gl_DIRENT_MODULE_INDICATOR([opendir]) gl_PATHMAX gl_FUNC_PRINTF_FREXP gl_FUNC_PRINTF_FREXPL m4_divert_text([INIT_PREPARE], [gl_printf_safe=yes]) gl_FUNC_RAISE if test $HAVE_RAISE = 0 || test $REPLACE_RAISE = 1; then AC_LIBOBJ([raise]) gl_PREREQ_RAISE fi gl_SIGNAL_MODULE_INDICATOR([raise]) gl_FUNC_READDIR if test $HAVE_READDIR = 0; then AC_LIBOBJ([readdir]) fi gl_DIRENT_MODULE_INDICATOR([readdir]) gl_REGEX if test $ac_use_included_regex = yes; then AC_LIBOBJ([regex]) gl_PREREQ_REGEX fi gl_FUNC_SETLOCALE_NULL if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then AC_LIBOBJ([setlocale-lock]) gl_PREREQ_SETLOCALE_LOCK fi gl_LOCALE_MODULE_INDICATOR([setlocale_null]) gl_SIGACTION if test $HAVE_SIGACTION = 0; then AC_LIBOBJ([sigaction]) gl_PREREQ_SIGACTION fi gl_SIGNAL_MODULE_INDICATOR([sigaction]) gl_SIGNAL_H gl_SIGNBIT if test $REPLACE_SIGNBIT = 1; then AC_LIBOBJ([signbitf]) AC_LIBOBJ([signbitd]) AC_LIBOBJ([signbitl]) fi gl_MATH_MODULE_INDICATOR([signbit]) gl_SIGNALBLOCKING if test $HAVE_POSIX_SIGNALBLOCKING = 0; then AC_LIBOBJ([sigprocmask]) gl_PREREQ_SIGPROCMASK fi gl_SIGNAL_MODULE_INDICATOR([sigprocmask]) gl_SIZE_MAX gl_FUNC_SNPRINTF gl_STDIO_MODULE_INDICATOR([snprintf]) gl_MODULE_INDICATOR([snprintf]) gl_FUNC_SNPRINTF_POSIX gt_TYPE_SSIZE_T gl_FUNC_STAT if test $REPLACE_STAT = 1; then AC_LIBOBJ([stat]) case "$host_os" in mingw*) AC_LIBOBJ([stat-w32]) ;; esac gl_PREREQ_STAT fi gl_SYS_STAT_MODULE_INDICATOR([stat]) gl_STAT_TIME gl_STAT_BIRTHTIME gl_STDARG_H AM_STDBOOL_H gl_STDDEF_H gl_STDINT_H gl_STDIO_H gl_STDLIB_H gl_STRCASE if test $HAVE_STRCASECMP = 0; then AC_LIBOBJ([strcasecmp]) gl_PREREQ_STRCASECMP fi if test $HAVE_STRNCASECMP = 0; then AC_LIBOBJ([strncasecmp]) gl_PREREQ_STRNCASECMP fi gl_FUNC_STRCASESTR_SIMPLE if test $HAVE_STRCASESTR = 0 || test $REPLACE_STRCASESTR = 1; then AC_LIBOBJ([strcasestr]) gl_PREREQ_STRCASESTR fi gl_STRING_MODULE_INDICATOR([strcasestr]) gl_HEADER_STRING_H gl_HEADER_STRINGS_H gl_FUNC_STRNLEN if test $HAVE_DECL_STRNLEN = 0 || test $REPLACE_STRNLEN = 1; then AC_LIBOBJ([strnlen]) gl_PREREQ_STRNLEN fi gl_STRING_MODULE_INDICATOR([strnlen]) gl_HEADER_SYS_STAT_H AC_PROG_MKDIR_P gl_HEADER_SYS_TIME_H AC_PROG_MKDIR_P gl_SYS_TYPES_H AC_PROG_MKDIR_P gl_SYS_WAIT_H AC_PROG_MKDIR_P AC_REQUIRE([gl_THREADLIB]) gl_HEADER_TIME_H gl_TIMESPEC gl_UNISTD_H gl_LIBUNISTRING_LIBHEADER([0.9.4], [unitypes.h]) gl_LIBUNISTRING_LIBHEADER([0.9.4], [uniwidth.h]) gl_LIBUNISTRING_MODULE([0.9.8], [uniwidth/width]) gl_FUNC_UTIME if test $HAVE_UTIME = 0 || test $REPLACE_UTIME = 1; then AC_LIBOBJ([utime]) gl_PREREQ_UTIME fi gl_UTIME_MODULE_INDICATOR([utime]) gl_UTIME_H gl_UTIMENS AC_REQUIRE([AC_C_RESTRICT]) gl_FUNC_VASNPRINTF gl_FUNC_VSNPRINTF gl_STDIO_MODULE_INDICATOR([vsnprintf]) gl_FUNC_VSNPRINTF_POSIX gl_WCHAR_H gl_FUNC_WCRTOMB if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then AC_LIBOBJ([wcrtomb]) gl_PREREQ_WCRTOMB fi gl_WCHAR_MODULE_INDICATOR([wcrtomb]) gl_WCTYPE_H gl_FUNC_WCWIDTH if test $HAVE_WCWIDTH = 0 || test $REPLACE_WCWIDTH = 1; then AC_LIBOBJ([wcwidth]) gl_PREREQ_WCWIDTH fi gl_WCHAR_MODULE_INDICATOR([wcwidth]) AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in mingw*) AC_LIBOBJ([windows-mutex]) ;; esac AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in mingw*) AC_LIBOBJ([windows-once]) ;; esac AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in mingw*) AC_LIBOBJ([windows-recmutex]) ;; esac AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in mingw*) AC_LIBOBJ([windows-rwlock]) ;; esac gl_XSIZE # End of code from modules m4_ifval(gl_LIBSOURCES_LIST, [ m4_syscmd([test ! -d ]m4_defn([gl_LIBSOURCES_DIR])[ || for gl_file in ]gl_LIBSOURCES_LIST[ ; do if test ! -r ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file ; then echo "missing file ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file" >&2 exit 1 fi done])dnl m4_if(m4_sysval, [0], [], [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])]) ]) m4_popdef([gl_LIBSOURCES_DIR]) m4_popdef([gl_LIBSOURCES_LIST]) m4_popdef([AC_LIBSOURCES]) m4_popdef([AC_REPLACE_FUNCS]) m4_popdef([AC_LIBOBJ]) AC_CONFIG_COMMANDS_PRE([ gl_libobjs= gl_ltlibobjs= if test -n "$gl_LIBOBJS"; then # Remove the extension. sed_drop_objext='s/\.o$//;s/\.obj$//' for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do gl_libobjs="$gl_libobjs $i.$ac_objext" gl_ltlibobjs="$gl_ltlibobjs $i.lo" done fi AC_SUBST([gl_LIBOBJS], [$gl_libobjs]) AC_SUBST([gl_LTLIBOBJS], [$gl_ltlibobjs]) ]) gltests_libdeps= gltests_ltlibdeps= m4_pushdef([AC_LIBOBJ], m4_defn([gltests_LIBOBJ])) m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gltests_REPLACE_FUNCS])) m4_pushdef([AC_LIBSOURCES], m4_defn([gltests_LIBSOURCES])) m4_pushdef([gltests_LIBSOURCES_LIST], []) m4_pushdef([gltests_LIBSOURCES_DIR], []) gl_COMMON gl_source_base='tests' changequote(,)dnl gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS changequote([, ])dnl AC_SUBST([gltests_WITNESS]) gl_module_indicator_condition=$gltests_WITNESS m4_pushdef([gl_MODULE_INDICATOR_CONDITION], [$gl_module_indicator_condition]) m4_popdef([gl_MODULE_INDICATOR_CONDITION]) m4_ifval(gltests_LIBSOURCES_LIST, [ m4_syscmd([test ! -d ]m4_defn([gltests_LIBSOURCES_DIR])[ || for gl_file in ]gltests_LIBSOURCES_LIST[ ; do if test ! -r ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file ; then echo "missing file ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file" >&2 exit 1 fi done])dnl m4_if(m4_sysval, [0], [], [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])]) ]) m4_popdef([gltests_LIBSOURCES_DIR]) m4_popdef([gltests_LIBSOURCES_LIST]) m4_popdef([AC_LIBSOURCES]) m4_popdef([AC_REPLACE_FUNCS]) m4_popdef([AC_LIBOBJ]) AC_CONFIG_COMMANDS_PRE([ gltests_libobjs= gltests_ltlibobjs= if test -n "$gltests_LIBOBJS"; then # Remove the extension. sed_drop_objext='s/\.o$//;s/\.obj$//' for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do gltests_libobjs="$gltests_libobjs $i.$ac_objext" gltests_ltlibobjs="$gltests_ltlibobjs $i.lo" done fi AC_SUBST([gltests_LIBOBJS], [$gltests_libobjs]) AC_SUBST([gltests_LTLIBOBJS], [$gltests_ltlibobjs]) ]) LIBGNU_LIBDEPS="$gl_libdeps" AC_SUBST([LIBGNU_LIBDEPS]) LIBGNU_LTLIBDEPS="$gl_ltlibdeps" AC_SUBST([LIBGNU_LTLIBDEPS]) ]) # Like AC_LIBOBJ, except that the module name goes # into gl_LIBOBJS instead of into LIBOBJS. AC_DEFUN([gl_LIBOBJ], [ AS_LITERAL_IF([$1], [gl_LIBSOURCES([$1.c])])dnl gl_LIBOBJS="$gl_LIBOBJS $1.$ac_objext" ]) # Like AC_REPLACE_FUNCS, except that the module name goes # into gl_LIBOBJS instead of into LIBOBJS. AC_DEFUN([gl_REPLACE_FUNCS], [ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl AC_CHECK_FUNCS([$1], , [gl_LIBOBJ($ac_func)]) ]) # Like AC_LIBSOURCES, except the directory where the source file is # expected is derived from the gnulib-tool parameterization, # and alloca is special cased (for the alloca-opt module). # We could also entirely rely on EXTRA_lib..._SOURCES. AC_DEFUN([gl_LIBSOURCES], [ m4_foreach([_gl_NAME], [$1], [ m4_if(_gl_NAME, [alloca.c], [], [ m4_define([gl_LIBSOURCES_DIR], [lib]) m4_append([gl_LIBSOURCES_LIST], _gl_NAME, [ ]) ]) ]) ]) # Like AC_LIBOBJ, except that the module name goes # into gltests_LIBOBJS instead of into LIBOBJS. AC_DEFUN([gltests_LIBOBJ], [ AS_LITERAL_IF([$1], [gltests_LIBSOURCES([$1.c])])dnl gltests_LIBOBJS="$gltests_LIBOBJS $1.$ac_objext" ]) # Like AC_REPLACE_FUNCS, except that the module name goes # into gltests_LIBOBJS instead of into LIBOBJS. AC_DEFUN([gltests_REPLACE_FUNCS], [ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl AC_CHECK_FUNCS([$1], , [gltests_LIBOBJ($ac_func)]) ]) # Like AC_LIBSOURCES, except the directory where the source file is # expected is derived from the gnulib-tool parameterization, # and alloca is special cased (for the alloca-opt module). # We could also entirely rely on EXTRA_lib..._SOURCES. AC_DEFUN([gltests_LIBSOURCES], [ m4_foreach([_gl_NAME], [$1], [ m4_if(_gl_NAME, [alloca.c], [], [ m4_define([gltests_LIBSOURCES_DIR], [tests]) m4_append([gltests_LIBSOURCES_LIST], _gl_NAME, [ ]) ]) ]) ]) # This macro records the list of files which have been installed by # gnulib-tool and may be removed by future gnulib-tool invocations. AC_DEFUN([gl_FILE_LIST], [ lib/_Noreturn.h lib/alloca.c lib/alloca.in.h lib/arg-nonnull.h lib/asnprintf.c lib/btowc.c lib/c++defs.h lib/cdefs.h lib/closedir.c lib/ctype.in.h lib/dirent-private.h lib/dirent.in.h lib/dirfd.c lib/dosname.h lib/errno.in.h lib/fcntl.in.h lib/filename.h lib/flexmember.h lib/float+.h lib/float.c lib/float.in.h lib/fnmatch.c lib/fnmatch.in.h lib/fnmatch_loop.c lib/fpucw.h lib/frexp.c lib/frexpl.c lib/fstat.c lib/futimens.c lib/getdelim.c lib/getline.c lib/getlogin_r.c lib/getopt-cdefs.in.h lib/getopt-core.h lib/getopt-ext.h lib/getopt-pfx-core.h lib/getopt-pfx-ext.h lib/getopt.c lib/getopt.in.h lib/getopt1.c lib/getopt_int.h lib/gettext.h lib/gettime.c lib/gettimeofday.c lib/glob-libc.h lib/glob.c lib/glob.in.h lib/glob_internal.h lib/glob_pattern_p.c lib/globfree.c lib/glthread/lock.c lib/glthread/lock.h lib/glthread/threadlib.c lib/hard-locale.c lib/hard-locale.h lib/intprops.h lib/inttypes.in.h lib/isblank.c lib/isnan.c lib/isnand-nolibm.h lib/isnand.c lib/isnanf-nolibm.h lib/isnanf.c lib/isnanl-nolibm.h lib/isnanl.c lib/iswblank.c lib/itold.c lib/langinfo.in.h lib/lc-charset-dispatch.c lib/lc-charset-dispatch.h lib/libc-config.h lib/limits.in.h lib/localcharset.c lib/localcharset.h lib/locale.in.h lib/localeconv.c lib/localtime-buffer.c lib/localtime-buffer.h lib/lstat.c lib/malloc.c lib/malloc/scratch_buffer.h lib/malloc/scratch_buffer_grow.c lib/malloc/scratch_buffer_grow_preserve.c lib/malloc/scratch_buffer_set_array_size.c lib/malloca.c lib/malloca.h lib/math.c lib/math.in.h lib/mbrtowc-impl-utf8.h lib/mbrtowc-impl.h lib/mbrtowc.c lib/mbsinit.c lib/mbsrtowcs-impl.h lib/mbsrtowcs-state.c lib/mbsrtowcs.c lib/mbtowc-impl.h lib/mbtowc-lock.c lib/mbtowc-lock.h lib/mbtowc.c lib/memchr.c lib/memchr.valgrind lib/mempcpy.c lib/msvc-inval.c lib/msvc-inval.h lib/msvc-nothrow.c lib/msvc-nothrow.h lib/nl_langinfo.c lib/opendir.c lib/pathmax.h lib/printf-args.c lib/printf-args.h lib/printf-frexp.c lib/printf-frexp.h lib/printf-frexpl.c lib/printf-frexpl.h lib/printf-parse.c lib/printf-parse.h lib/raise.c lib/readdir.c lib/regcomp.c lib/regex.c lib/regex.h lib/regex_internal.c lib/regex_internal.h lib/regexec.c lib/scratch_buffer.h lib/setlocale-lock.c lib/setlocale_null.c lib/setlocale_null.h lib/sig-handler.c lib/sig-handler.h lib/sigaction.c lib/signal.in.h lib/signbitd.c lib/signbitf.c lib/signbitl.c lib/sigprocmask.c lib/size_max.h lib/snprintf.c lib/stat-time.c lib/stat-time.h lib/stat-w32.c lib/stat-w32.h lib/stat.c lib/stdarg.in.h lib/stdbool.in.h lib/stddef.in.h lib/stdint.in.h lib/stdio.in.h lib/stdlib.in.h lib/str-two-way.h lib/strcasecmp.c lib/strcasestr.c lib/streq.h lib/string.in.h lib/strings.in.h lib/strncasecmp.c lib/strnlen.c lib/strnlen1.c lib/strnlen1.h lib/sys_stat.in.h lib/sys_time.in.h lib/sys_types.in.h lib/sys_wait.in.h lib/time.in.h lib/timespec.c lib/timespec.h lib/unistd.c lib/unistd.in.h lib/unitypes.in.h lib/uniwidth.in.h lib/uniwidth/cjk.h lib/uniwidth/width.c lib/utime.c lib/utime.in.h lib/utimens.c lib/utimens.h lib/vasnprintf.c lib/vasnprintf.h lib/verify.h lib/vsnprintf.c lib/warn-on-use.h lib/wchar.in.h lib/wcrtomb.c lib/wctype-h.c lib/wctype.in.h lib/wcwidth.c lib/windows-initguard.h lib/windows-mutex.c lib/windows-mutex.h lib/windows-once.c lib/windows-once.h lib/windows-recmutex.c lib/windows-recmutex.h lib/windows-rwlock.c lib/windows-rwlock.h lib/xalloc-oversized.h lib/xsize.c lib/xsize.h m4/00gnulib.m4 m4/__inline.m4 m4/absolute-header.m4 m4/alloca.m4 m4/btowc.m4 m4/builtin-expect.m4 m4/clock_time.m4 m4/closedir.m4 m4/codeset.m4 m4/ctype.m4 m4/d-type.m4 m4/dirent_h.m4 m4/dirfd.m4 m4/eealloc.m4 m4/errno_h.m4 m4/exponentd.m4 m4/exponentf.m4 m4/exponentl.m4 m4/extensions.m4 m4/extern-inline.m4 m4/fcntl-o.m4 m4/fcntl_h.m4 m4/flexmember.m4 m4/float_h.m4 m4/fnmatch.m4 m4/fnmatch_h.m4 m4/fpieee.m4 m4/frexp.m4 m4/frexpl.m4 m4/fstat.m4 m4/futimens.m4 m4/getdelim.m4 m4/getline.m4 m4/getlogin.m4 m4/getlogin_r.m4 m4/getopt.m4 m4/gettime.m4 m4/gettimeofday.m4 m4/glibc21.m4 m4/glob.m4 m4/glob_h.m4 m4/gnulib-common.m4 m4/include_next.m4 m4/intmax_t.m4 m4/inttypes.m4 m4/inttypes_h.m4 m4/isblank.m4 m4/isnand.m4 m4/isnanf.m4 m4/isnanl.m4 m4/iswblank.m4 m4/langinfo_h.m4 m4/largefile.m4 m4/ldexpl.m4 m4/libunistring-base.m4 m4/limits-h.m4 m4/localcharset.m4 m4/locale-fr.m4 m4/locale-ja.m4 m4/locale-zh.m4 m4/locale_h.m4 m4/localeconv.m4 m4/localtime-buffer.m4 m4/lock.m4 m4/lstat.m4 m4/malloc.m4 m4/malloca.m4 m4/math_h.m4 m4/mbrtowc.m4 m4/mbsinit.m4 m4/mbsrtowcs.m4 m4/mbstate_t.m4 m4/mbtowc.m4 m4/memchr.m4 m4/mempcpy.m4 m4/mmap-anon.m4 m4/msvc-inval.m4 m4/msvc-nothrow.m4 m4/multiarch.m4 m4/nl_langinfo.m4 m4/nocrash.m4 m4/off_t.m4 m4/opendir.m4 m4/pathmax.m4 m4/printf-frexp.m4 m4/printf-frexpl.m4 m4/printf.m4 m4/pthread_rwlock_rdlock.m4 m4/raise.m4 m4/readdir.m4 m4/regex.m4 m4/setlocale_null.m4 m4/sigaction.m4 m4/signal_h.m4 m4/signalblocking.m4 m4/signbit.m4 m4/size_max.m4 m4/snprintf-posix.m4 m4/snprintf.m4 m4/ssize_t.m4 m4/stat-time.m4 m4/stat.m4 m4/std-gnu11.m4 m4/stdarg.m4 m4/stdbool.m4 m4/stddef_h.m4 m4/stdint.m4 m4/stdint_h.m4 m4/stdio_h.m4 m4/stdlib_h.m4 m4/strcase.m4 m4/strcasestr.m4 m4/string_h.m4 m4/strings_h.m4 m4/strnlen.m4 m4/sys_socket_h.m4 m4/sys_stat_h.m4 m4/sys_time_h.m4 m4/sys_types_h.m4 m4/sys_wait_h.m4 m4/threadlib.m4 m4/time_h.m4 m4/timespec.m4 m4/unistd_h.m4 m4/utime.m4 m4/utime_h.m4 m4/utimens.m4 m4/utimes.m4 m4/vasnprintf.m4 m4/visibility.m4 m4/vsnprintf-posix.m4 m4/vsnprintf.m4 m4/warn-on-use.m4 m4/wchar_h.m4 m4/wchar_t.m4 m4/wcrtomb.m4 m4/wctype_h.m4 m4/wcwidth.m4 m4/wint_t.m4 m4/xsize.m4 m4/zzgnulib.m4 ]) # include_next.m4 serial 24 dnl Copyright (C) 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert and Derek Price. dnl Sets INCLUDE_NEXT, INCLUDE_NEXT_AS_FIRST_DIRECTIVE, PRAGMA_SYSTEM_HEADER, dnl and PRAGMA_COLUMNS. dnl dnl INCLUDE_NEXT expands to 'include_next' if the compiler supports it, or to dnl 'include' otherwise. dnl dnl INCLUDE_NEXT_AS_FIRST_DIRECTIVE expands to 'include_next' if the compiler dnl supports it in the special case that it is the first include directive in dnl the given file, or to 'include' otherwise. dnl dnl PRAGMA_SYSTEM_HEADER can be used in files that contain #include_next, dnl so as to avoid GCC warnings when the gcc option -pedantic is used. dnl '#pragma GCC system_header' has the same effect as if the file was found dnl through the include search path specified with '-isystem' options (as dnl opposed to the search path specified with '-I' options). Namely, gcc dnl does not warn about some things, and on some systems (Solaris and Interix) dnl __STDC__ evaluates to 0 instead of to 1. The latter is an undesired side dnl effect; we are therefore careful to use 'defined __STDC__' or '1' instead dnl of plain '__STDC__'. dnl dnl PRAGMA_COLUMNS can be used in files that override system header files, so dnl as to avoid compilation errors on HP NonStop systems when the gnulib file dnl is included by a system header file that does a "#pragma COLUMNS 80" (which dnl has the effect of truncating the lines of that file and all files that it dnl includes to 80 columns) and the gnulib file has lines longer than 80 dnl columns. AC_DEFUN([gl_INCLUDE_NEXT], [ AC_LANG_PREPROC_REQUIRE() AC_CACHE_CHECK([whether the preprocessor supports include_next], [gl_cv_have_include_next], [rm -rf conftestd1a conftestd1b conftestd2 mkdir conftestd1a conftestd1b conftestd2 dnl IBM C 9.0, 10.1 (original versions, prior to the 2009-01 updates) on dnl AIX 6.1 support include_next when used as first preprocessor directive dnl in a file, but not when preceded by another include directive. Check dnl for this bug by including . dnl Additionally, with this same compiler, include_next is a no-op when dnl used in a header file that was included by specifying its absolute dnl file name. Despite these two bugs, include_next is used in the dnl compiler's . By virtue of the second bug, we need to use dnl include_next as well in this case. cat < conftestd1a/conftest.h #define DEFINED_IN_CONFTESTD1 #include_next #ifdef DEFINED_IN_CONFTESTD2 int foo; #else #error "include_next doesn't work" #endif EOF cat < conftestd1b/conftest.h #define DEFINED_IN_CONFTESTD1 #include #include_next #ifdef DEFINED_IN_CONFTESTD2 int foo; #else #error "include_next doesn't work" #endif EOF cat < conftestd2/conftest.h #ifndef DEFINED_IN_CONFTESTD1 #error "include_next test doesn't work" #endif #define DEFINED_IN_CONFTESTD2 EOF gl_save_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1b -Iconftestd2" dnl We intentionally avoid using AC_LANG_SOURCE here. AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include ]], [gl_cv_have_include_next=yes], [CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1a -Iconftestd2" AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include ]], [gl_cv_have_include_next=buggy], [gl_cv_have_include_next=no]) ]) CPPFLAGS="$gl_save_CPPFLAGS" rm -rf conftestd1a conftestd1b conftestd2 ]) PRAGMA_SYSTEM_HEADER= if test $gl_cv_have_include_next = yes; then INCLUDE_NEXT=include_next INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next if test -n "$GCC"; then PRAGMA_SYSTEM_HEADER='#pragma GCC system_header' fi else if test $gl_cv_have_include_next = buggy; then INCLUDE_NEXT=include INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next else INCLUDE_NEXT=include INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include fi fi AC_SUBST([INCLUDE_NEXT]) AC_SUBST([INCLUDE_NEXT_AS_FIRST_DIRECTIVE]) AC_SUBST([PRAGMA_SYSTEM_HEADER]) AC_CACHE_CHECK([whether system header files limit the line length], [gl_cv_pragma_columns], [dnl HP NonStop systems, which define __TANDEM, have this misfeature. AC_EGREP_CPP([choke me], [ #ifdef __TANDEM choke me #endif ], [gl_cv_pragma_columns=yes], [gl_cv_pragma_columns=no]) ]) if test $gl_cv_pragma_columns = yes; then PRAGMA_COLUMNS="#pragma COLUMNS 10000" else PRAGMA_COLUMNS= fi AC_SUBST([PRAGMA_COLUMNS]) ]) # gl_CHECK_NEXT_HEADERS(HEADER1 HEADER2 ...) # ------------------------------------------ # For each arg foo.h, if #include_next works, define NEXT_FOO_H to be # ''; otherwise define it to be # '"///usr/include/foo.h"', or whatever other absolute file name is suitable. # Also, if #include_next works as first preprocessing directive in a file, # define NEXT_AS_FIRST_DIRECTIVE_FOO_H to be ''; otherwise define it to # be # '"///usr/include/foo.h"', or whatever other absolute file name is suitable. # That way, a header file with the following line: # #@INCLUDE_NEXT@ @NEXT_FOO_H@ # or # #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@ # behaves (after sed substitution) as if it contained # #include_next # even if the compiler does not support include_next. # The three "///" are to pacify Sun C 5.8, which otherwise would say # "warning: #include of /usr/include/... may be non-portable". # Use '""', not '<>', so that the /// cannot be confused with a C99 comment. # Note: This macro assumes that the header file is not empty after # preprocessing, i.e. it does not only define preprocessor macros but also # provides some type/enum definitions or function/variable declarations. # # This macro also checks whether each header exists, by invoking # AC_CHECK_HEADERS_ONCE or AC_CHECK_HEADERS on each argument. AC_DEFUN([gl_CHECK_NEXT_HEADERS], [ gl_NEXT_HEADERS_INTERNAL([$1], [check]) ]) # gl_NEXT_HEADERS(HEADER1 HEADER2 ...) # ------------------------------------ # Like gl_CHECK_NEXT_HEADERS, except do not check whether the headers exist. # This is suitable for headers like that are standardized by C89 # and therefore can be assumed to exist. AC_DEFUN([gl_NEXT_HEADERS], [ gl_NEXT_HEADERS_INTERNAL([$1], [assume]) ]) # The guts of gl_CHECK_NEXT_HEADERS and gl_NEXT_HEADERS. AC_DEFUN([gl_NEXT_HEADERS_INTERNAL], [ AC_REQUIRE([gl_INCLUDE_NEXT]) AC_REQUIRE([AC_CANONICAL_HOST]) m4_if([$2], [check], [AC_CHECK_HEADERS_ONCE([$1]) ]) dnl FIXME: gl_next_header and gl_header_exists must be used unquoted dnl until we can assume autoconf 2.64 or newer. m4_foreach_w([gl_HEADER_NAME], [$1], [AS_VAR_PUSHDEF([gl_next_header], [gl_cv_next_]m4_defn([gl_HEADER_NAME])) if test $gl_cv_have_include_next = yes; then AS_VAR_SET(gl_next_header, ['<'gl_HEADER_NAME'>']) else AC_CACHE_CHECK( [absolute name of <]m4_defn([gl_HEADER_NAME])[>], m4_defn([gl_next_header]), [m4_if([$2], [check], [AS_VAR_PUSHDEF([gl_header_exists], [ac_cv_header_]m4_defn([gl_HEADER_NAME])) if test AS_VAR_GET(gl_header_exists) = yes; then AS_VAR_POPDEF([gl_header_exists]) ]) gl_ABSOLUTE_HEADER_ONE(gl_HEADER_NAME) AS_VAR_COPY([gl_header], [gl_cv_absolute_]AS_TR_SH(gl_HEADER_NAME)) AS_VAR_SET(gl_next_header, ['"'$gl_header'"']) m4_if([$2], [check], [else AS_VAR_SET(gl_next_header, ['<'gl_HEADER_NAME'>']) fi ]) ]) fi AC_SUBST( AS_TR_CPP([NEXT_]m4_defn([gl_HEADER_NAME])), [AS_VAR_GET(gl_next_header)]) if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next' gl_next_as_first_directive='<'gl_HEADER_NAME'>' else # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include' gl_next_as_first_directive=AS_VAR_GET(gl_next_header) fi AC_SUBST( AS_TR_CPP([NEXT_AS_FIRST_DIRECTIVE_]m4_defn([gl_HEADER_NAME])), [$gl_next_as_first_directive]) AS_VAR_POPDEF([gl_next_header])]) ]) # Autoconf 2.68 added warnings for our use of AC_COMPILE_IFELSE; # this fallback is safe for all earlier autoconf versions. m4_define_default([AC_LANG_DEFINES_PROVIDED]) # intlmacosx.m4 serial 5 (gettext-0.18.2) dnl Copyright (C) 2004-2013 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl dnl This file can can be used in projects which are not available under dnl the GNU General Public License or the GNU Library General Public dnl License but which still want to provide support for the GNU gettext dnl functionality. dnl Please note that the actual code of the GNU gettext library is covered dnl by the GNU Library General Public License, and the rest of the GNU dnl gettext package package is covered by the GNU General Public License. dnl They are *not* in the public domain. dnl Checks for special options needed on Mac OS X. dnl Defines INTL_MACOSX_LIBS. AC_DEFUN([gt_INTL_MACOSX], [ dnl Check for API introduced in Mac OS X 10.2. AC_CACHE_CHECK([for CFPreferencesCopyAppValue], [gt_cv_func_CFPreferencesCopyAppValue], [gt_save_LIBS="$LIBS" LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[CFPreferencesCopyAppValue(NULL, NULL)]])], [gt_cv_func_CFPreferencesCopyAppValue=yes], [gt_cv_func_CFPreferencesCopyAppValue=no]) LIBS="$gt_save_LIBS"]) if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], [1], [Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in the CoreFoundation framework.]) fi dnl Check for API introduced in Mac OS X 10.3. AC_CACHE_CHECK([for CFLocaleCopyCurrent], [gt_cv_func_CFLocaleCopyCurrent], [gt_save_LIBS="$LIBS" LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[CFLocaleCopyCurrent();]])], [gt_cv_func_CFLocaleCopyCurrent=yes], [gt_cv_func_CFLocaleCopyCurrent=no]) LIBS="$gt_save_LIBS"]) if test $gt_cv_func_CFLocaleCopyCurrent = yes; then AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], [1], [Define to 1 if you have the Mac OS X function CFLocaleCopyCurrent in the CoreFoundation framework.]) fi INTL_MACOSX_LIBS= if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation" fi AC_SUBST([INTL_MACOSX_LIBS]) ]) # intmax_t.m4 serial 9 dnl Copyright (C) 1997-2004, 2006-2007, 2009-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert. AC_PREREQ([2.53]) # Define intmax_t to 'long' or 'long long' # if it is not already defined in or . AC_DEFUN([gl_AC_TYPE_INTMAX_T], [ dnl For simplicity, we assume that a header file defines 'intmax_t' if and dnl only if it defines 'uintmax_t'. AC_REQUIRE([gl_AC_HEADER_INTTYPES_H]) AC_REQUIRE([gl_AC_HEADER_STDINT_H]) if test $gl_cv_header_inttypes_h = no && test $gl_cv_header_stdint_h = no; then AC_DEFINE_UNQUOTED([intmax_t], [long long], [Define to long or long long if and don't define.]) else AC_DEFINE([HAVE_INTMAX_T], [1], [Define if you have the 'intmax_t' type in or .]) fi ]) dnl An alternative would be to explicitly test for 'intmax_t'. AC_DEFUN([gt_AC_TYPE_INTMAX_T], [ AC_REQUIRE([gl_AC_HEADER_INTTYPES_H]) AC_REQUIRE([gl_AC_HEADER_STDINT_H]) AC_CACHE_CHECK([for intmax_t], [gt_cv_c_intmax_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include #include #if HAVE_STDINT_H_WITH_UINTMAX #include #endif #if HAVE_INTTYPES_H_WITH_UINTMAX #include #endif ]], [[intmax_t x = -1; return !x;]])], [gt_cv_c_intmax_t=yes], [gt_cv_c_intmax_t=no])]) if test $gt_cv_c_intmax_t = yes; then AC_DEFINE([HAVE_INTMAX_T], [1], [Define if you have the 'intmax_t' type in or .]) else AC_DEFINE_UNQUOTED([intmax_t], [long long], [Define to long or long long if and don't define.]) fi ]) # inttypes.m4 serial 29 dnl Copyright (C) 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Derek Price, Bruno Haible. dnl Test whether is supported or must be substituted. AC_DEFUN([gl_INTTYPES_H], [ AC_REQUIRE([gl_INTTYPES_INCOMPLETE]) gl_INTTYPES_PRI_SCN ]) AC_DEFUN_ONCE([gl_INTTYPES_INCOMPLETE], [ AC_REQUIRE([gl_STDINT_H]) AC_CHECK_HEADERS_ONCE([inttypes.h]) dnl Override always, so that the portability warnings work. AC_REQUIRE([gl_INTTYPES_H_DEFAULTS]) gl_CHECK_NEXT_HEADERS([inttypes.h]) AC_REQUIRE([gl_MULTIARCH]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [imaxabs imaxdiv strtoimax strtoumax]) AC_REQUIRE([AC_C_RESTRICT]) ]) # Ensure that the PRI* and SCN* macros are defined appropriately. AC_DEFUN([gl_INTTYPES_PRI_SCN], [ AC_REQUIRE([gt_INTTYPES_PRI]) PRIPTR_PREFIX= if test -n "$STDINT_H"; then dnl Using the gnulib . It always defines intptr_t to 'long'. PRIPTR_PREFIX='"l"' else dnl Using the system's . for glpfx in '' l ll I64; do case $glpfx in '') gltype1='int';; l) gltype1='long int';; ll) gltype1='long long int';; I64) gltype1='__int64';; esac AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include extern intptr_t foo; extern $gltype1 foo;]])], [PRIPTR_PREFIX='"'$glpfx'"']) test -n "$PRIPTR_PREFIX" && break done fi AC_SUBST([PRIPTR_PREFIX]) gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION( [INT32_MAX_LT_INTMAX_MAX], [defined INT32_MAX && defined INTMAX_MAX], [INT32_MAX < INTMAX_MAX], [sizeof (int) < sizeof (long long int)]) if test $APPLE_UNIVERSAL_BUILD = 0; then gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION( [INT64_MAX_EQ_LONG_MAX], [defined INT64_MAX], [INT64_MAX == LONG_MAX], [sizeof (long long int) == sizeof (long int)]) else INT64_MAX_EQ_LONG_MAX=-1 fi gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION( [UINT32_MAX_LT_UINTMAX_MAX], [defined UINT32_MAX && defined UINTMAX_MAX], [UINT32_MAX < UINTMAX_MAX], [sizeof (unsigned int) < sizeof (unsigned long long int)]) if test $APPLE_UNIVERSAL_BUILD = 0; then gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION( [UINT64_MAX_EQ_ULONG_MAX], [defined UINT64_MAX], [UINT64_MAX == ULONG_MAX], [sizeof (unsigned long long int) == sizeof (unsigned long int)]) else UINT64_MAX_EQ_ULONG_MAX=-1 fi ]) # Define the symbol $1 to be 1 if the condition is true, 0 otherwise. # If $2 is true, the condition is $3; otherwise if long long int is supported # approximate the condition with $4; otherwise, assume the condition is false. # The condition should work on all C99 platforms; the approximations should be # good enough to work on all practical pre-C99 platforms. # $2 is evaluated by the C preprocessor, $3 and $4 as compile-time constants. AC_DEFUN([gl_INTTYPES_CHECK_LONG_LONG_INT_CONDITION], [ AC_CACHE_CHECK([whether $3], [gl_cv_test_$1], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[/* Work also in C++ mode. */ #define __STDC_LIMIT_MACROS 1 /* Work if build is not clean. */ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H #include #if HAVE_STDINT_H #include #endif #if $2 #define CONDITION ($3) #else #define CONDITION ($4) #endif int test[CONDITION ? 1 : -1];]])], [gl_cv_test_$1=yes], [gl_cv_test_$1=no])]) if test $gl_cv_test_$1 = yes; then $1=1; else $1=0; fi AC_SUBST([$1]) ]) AC_DEFUN([gl_INTTYPES_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_INTTYPES_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) ]) AC_DEFUN([gl_INTTYPES_H_DEFAULTS], [ GNULIB_IMAXABS=0; AC_SUBST([GNULIB_IMAXABS]) GNULIB_IMAXDIV=0; AC_SUBST([GNULIB_IMAXDIV]) GNULIB_STRTOIMAX=0; AC_SUBST([GNULIB_STRTOIMAX]) GNULIB_STRTOUMAX=0; AC_SUBST([GNULIB_STRTOUMAX]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_DECL_IMAXABS=1; AC_SUBST([HAVE_DECL_IMAXABS]) HAVE_DECL_IMAXDIV=1; AC_SUBST([HAVE_DECL_IMAXDIV]) HAVE_DECL_STRTOIMAX=1; AC_SUBST([HAVE_DECL_STRTOIMAX]) HAVE_DECL_STRTOUMAX=1; AC_SUBST([HAVE_DECL_STRTOUMAX]) HAVE_IMAXDIV_T=1; AC_SUBST([HAVE_IMAXDIV_T]) REPLACE_STRTOIMAX=0; AC_SUBST([REPLACE_STRTOIMAX]) REPLACE_STRTOUMAX=0; AC_SUBST([REPLACE_STRTOUMAX]) INT32_MAX_LT_INTMAX_MAX=1; AC_SUBST([INT32_MAX_LT_INTMAX_MAX]) INT64_MAX_EQ_LONG_MAX='defined _LP64'; AC_SUBST([INT64_MAX_EQ_LONG_MAX]) PRI_MACROS_BROKEN=0; AC_SUBST([PRI_MACROS_BROKEN]) PRIPTR_PREFIX=__PRIPTR_PREFIX; AC_SUBST([PRIPTR_PREFIX]) UINT32_MAX_LT_UINTMAX_MAX=1; AC_SUBST([UINT32_MAX_LT_UINTMAX_MAX]) UINT64_MAX_EQ_ULONG_MAX='defined _LP64'; AC_SUBST([UINT64_MAX_EQ_ULONG_MAX]) ]) # inttypes_h.m4 serial 10 dnl Copyright (C) 1997-2004, 2006, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert. # Define HAVE_INTTYPES_H_WITH_UINTMAX if exists, # doesn't clash with , and declares uintmax_t. AC_DEFUN([gl_AC_HEADER_INTTYPES_H], [ AC_CACHE_CHECK([for inttypes.h], [gl_cv_header_inttypes_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include #include ]], [[uintmax_t i = (uintmax_t) -1; return !i;]])], [gl_cv_header_inttypes_h=yes], [gl_cv_header_inttypes_h=no])]) if test $gl_cv_header_inttypes_h = yes; then AC_DEFINE_UNQUOTED([HAVE_INTTYPES_H_WITH_UINTMAX], [1], [Define if exists, doesn't clash with , and declares uintmax_t. ]) fi ]) # isblank.m4 serial 3 dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_ISBLANK], [ dnl Persuade glibc to declare isblank(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gl_CTYPE_H_DEFAULTS]) AC_CHECK_FUNCS_ONCE([isblank]) if test $ac_cv_func_isblank = no; then HAVE_ISBLANK=0 fi ]) # isnand.m4 serial 11 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Check how to get or define isnand(). AC_DEFUN([gl_FUNC_ISNAND], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) ISNAND_LIBM= gl_HAVE_ISNAND_NO_LIBM if test $gl_cv_func_isnand_no_libm = no; then gl_HAVE_ISNAND_IN_LIBM if test $gl_cv_func_isnand_in_libm = yes; then ISNAND_LIBM=-lm fi fi dnl The variable gl_func_isnand set here is used by isnan.m4. if test $gl_cv_func_isnand_no_libm = yes \ || test $gl_cv_func_isnand_in_libm = yes; then gl_func_isnand=yes else gl_func_isnand=no HAVE_ISNAND=0 fi AC_SUBST([ISNAND_LIBM]) ]) dnl Check how to get or define isnand() without linking with libm. AC_DEFUN([gl_FUNC_ISNAND_NO_LIBM], [ gl_HAVE_ISNAND_NO_LIBM gl_func_isnand_no_libm=$gl_cv_func_isnand_no_libm if test $gl_cv_func_isnand_no_libm = yes; then AC_DEFINE([HAVE_ISNAND_IN_LIBC], [1], [Define if the isnan(double) function is available in libc.]) fi ]) dnl Prerequisites of replacement isnand definition. It does not need -lm. AC_DEFUN([gl_PREREQ_ISNAND], [ AC_REQUIRE([gl_DOUBLE_EXPONENT_LOCATION]) ]) dnl Test whether isnand() can be used with libm. AC_DEFUN([gl_HAVE_ISNAND_IN_LIBM], [ AC_CACHE_CHECK([whether isnan(double) can be used with libm], [gl_cv_func_isnand_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include #if __GNUC__ >= 4 # undef isnand # define isnand(x) __builtin_isnan ((double)(x)) #elif defined isnan # undef isnand # define isnand(x) isnan ((double)(x)) #endif double x;]], [[return isnand (x);]])], [gl_cv_func_isnand_in_libm=yes], [gl_cv_func_isnand_in_libm=no]) LIBS="$save_LIBS" ]) ]) AC_DEFUN([gl_HAVE_ISNAND_NO_LIBM], [ AC_CACHE_CHECK([whether isnan(double) can be used without linking with libm], [gl_cv_func_isnand_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include #if __GNUC__ >= 4 # undef isnand # define isnand(x) __builtin_isnan ((double)(x)) #else # undef isnand # define isnand(x) isnan ((double)(x)) #endif double x;]], [[return isnand (x);]])], [gl_cv_func_isnand_no_libm=yes], [gl_cv_func_isnand_no_libm=no]) ]) ]) # isnanf.m4 serial 15 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Check how to get or define isnanf(). AC_DEFUN([gl_FUNC_ISNANF], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) ISNANF_LIBM= gl_HAVE_ISNANF_NO_LIBM if test $gl_cv_func_isnanf_no_libm = no; then gl_HAVE_ISNANF_IN_LIBM if test $gl_cv_func_isnanf_in_libm = yes; then ISNANF_LIBM=-lm fi fi dnl The variable gl_func_isnanf set here is used by isnan.m4. if test $gl_cv_func_isnanf_no_libm = yes \ || test $gl_cv_func_isnanf_in_libm = yes; then save_LIBS="$LIBS" LIBS="$LIBS $ISNANF_LIBM" gl_ISNANF_WORKS LIBS="$save_LIBS" case "$gl_cv_func_isnanf_works" in *yes) gl_func_isnanf=yes ;; *) gl_func_isnanf=no; ISNANF_LIBM= ;; esac else gl_func_isnanf=no fi if test $gl_func_isnanf != yes; then HAVE_ISNANF=0 fi AC_SUBST([ISNANF_LIBM]) ]) dnl Check how to get or define isnanf() without linking with libm. AC_DEFUN([gl_FUNC_ISNANF_NO_LIBM], [ gl_HAVE_ISNANF_NO_LIBM if test $gl_cv_func_isnanf_no_libm = yes; then gl_ISNANF_WORKS fi if test $gl_cv_func_isnanf_no_libm = yes \ && { case "$gl_cv_func_isnanf_works" in *yes) true;; *) false;; esac }; then gl_func_isnanf_no_libm=yes AC_DEFINE([HAVE_ISNANF_IN_LIBC], [1], [Define if the isnan(float) function is available in libc.]) else gl_func_isnanf_no_libm=no fi ]) dnl Prerequisites of replacement isnanf definition. It does not need -lm. AC_DEFUN([gl_PREREQ_ISNANF], [ gl_FLOAT_EXPONENT_LOCATION ]) dnl Test whether isnanf() can be used without libm. AC_DEFUN([gl_HAVE_ISNANF_NO_LIBM], [ AC_CACHE_CHECK([whether isnan(float) can be used without linking with libm], [gl_cv_func_isnanf_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include #if __GNUC__ >= 4 # undef isnanf # define isnanf(x) __builtin_isnanf ((float)(x)) #elif defined isnan # undef isnanf # define isnanf(x) isnan ((float)(x)) #endif float x;]], [[return isnanf (x);]])], [gl_cv_func_isnanf_no_libm=yes], [gl_cv_func_isnanf_no_libm=no]) ]) ]) dnl Test whether isnanf() can be used with libm. AC_DEFUN([gl_HAVE_ISNANF_IN_LIBM], [ AC_CACHE_CHECK([whether isnan(float) can be used with libm], [gl_cv_func_isnanf_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include #if __GNUC__ >= 4 # undef isnanf # define isnanf(x) __builtin_isnanf ((float)(x)) #elif defined isnan # undef isnanf # define isnanf(x) isnan ((float)(x)) #endif float x;]], [[return isnanf (x);]])], [gl_cv_func_isnanf_in_libm=yes], [gl_cv_func_isnanf_in_libm=no]) LIBS="$save_LIBS" ]) ]) dnl Test whether isnanf() rejects Infinity (this fails on Solaris 2.5.1), dnl recognizes a NaN (this fails on IRIX 6.5 with cc), and recognizes a NaN dnl with in-memory representation 0x7fbfffff (this fails on IRIX 6.5). AC_DEFUN([gl_ISNANF_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_FLOAT_EXPONENT_LOCATION]) AC_CACHE_CHECK([whether isnan(float) works], [gl_cv_func_isnanf_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #if __GNUC__ >= 4 # undef isnanf # define isnanf(x) __builtin_isnanf ((float)(x)) #elif defined isnan # undef isnanf # define isnanf(x) isnan ((float)(x)) #endif /* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0. */ #ifdef __DECC static float NaN () { static float zero = 0.0f; return zero / zero; } #else # define NaN() (0.0f / 0.0f) #endif #define NWORDS \ ((sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) typedef union { unsigned int word[NWORDS]; float value; } memory_float; int main() { int result = 0; if (isnanf (1.0f / 0.0f)) result |= 1; if (!isnanf (NaN ())) result |= 2; #if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT /* The isnanf function should be immune against changes in the sign bit and in the mantissa bits. The xor operation twiddles a bit that can only be a sign bit or a mantissa bit. */ if (FLT_EXPBIT0_WORD == 0 && FLT_EXPBIT0_BIT > 0) { memory_float m; m.value = NaN (); /* Set the bits below the exponent to 01111...111. */ m.word[0] &= -1U << FLT_EXPBIT0_BIT; m.word[0] |= 1U << (FLT_EXPBIT0_BIT - 1) - 1; if (!isnanf (m.value)) result |= 4; } #endif return result; }]])], [gl_cv_func_isnanf_works=yes], [gl_cv_func_isnanf_works=no], [case "$host_os" in irix* | solaris*) gl_cv_func_isnanf_works="guessing no" ;; mingw*) # Guess yes on mingw, no on MSVC. AC_EGREP_CPP([Known], [ #ifdef __MINGW32__ Known #endif ], [gl_cv_func_isnanf_works="guessing yes"], [gl_cv_func_isnanf_works="guessing no"]) ;; *) gl_cv_func_isnanf_works="guessing yes" ;; esac ]) ]) ]) # isnanl.m4 serial 20 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_ISNANL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) ISNANL_LIBM= gl_HAVE_ISNANL_NO_LIBM if test $gl_cv_func_isnanl_no_libm = no; then gl_HAVE_ISNANL_IN_LIBM if test $gl_cv_func_isnanl_in_libm = yes; then ISNANL_LIBM=-lm fi fi dnl The variable gl_func_isnanl set here is used by isnan.m4. if test $gl_cv_func_isnanl_no_libm = yes \ || test $gl_cv_func_isnanl_in_libm = yes; then save_LIBS="$LIBS" LIBS="$LIBS $ISNANL_LIBM" gl_FUNC_ISNANL_WORKS LIBS="$save_LIBS" case "$gl_cv_func_isnanl_works" in *yes) gl_func_isnanl=yes ;; *) gl_func_isnanl=no; ISNANL_LIBM= ;; esac else gl_func_isnanl=no fi if test $gl_func_isnanl != yes; then HAVE_ISNANL=0 fi AC_SUBST([ISNANL_LIBM]) ]) AC_DEFUN([gl_FUNC_ISNANL_NO_LIBM], [ gl_HAVE_ISNANL_NO_LIBM gl_func_isnanl_no_libm=$gl_cv_func_isnanl_no_libm if test $gl_func_isnanl_no_libm = yes; then gl_FUNC_ISNANL_WORKS case "$gl_cv_func_isnanl_works" in *yes) ;; *) gl_func_isnanl_no_libm=no ;; esac fi if test $gl_func_isnanl_no_libm = yes; then AC_DEFINE([HAVE_ISNANL_IN_LIBC], [1], [Define if the isnan(long double) function is available in libc.]) fi ]) dnl Prerequisites of replacement isnanl definition. It does not need -lm. AC_DEFUN([gl_PREREQ_ISNANL], [ gl_LONG_DOUBLE_EXPONENT_LOCATION AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) ]) dnl Test whether isnanl() can be used without libm. AC_DEFUN([gl_HAVE_ISNANL_NO_LIBM], [ AC_CACHE_CHECK([whether isnan(long double) can be used without linking with libm], [gl_cv_func_isnanl_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include #if __GNUC__ >= 4 # undef isnanl # define isnanl(x) __builtin_isnanl ((long double)(x)) #elif defined isnan # undef isnanl # define isnanl(x) isnan ((long double)(x)) #endif long double x;]], [[return isnanl (x);]])], [gl_cv_func_isnanl_no_libm=yes], [gl_cv_func_isnanl_no_libm=no]) ]) ]) dnl Test whether isnanl() can be used with libm. AC_DEFUN([gl_HAVE_ISNANL_IN_LIBM], [ AC_CACHE_CHECK([whether isnan(long double) can be used with libm], [gl_cv_func_isnanl_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include #if __GNUC__ >= 4 # undef isnanl # define isnanl(x) __builtin_isnanl ((long double)(x)) #elif defined isnan # undef isnanl # define isnanl(x) isnan ((long double)(x)) #endif long double x;]], [[return isnanl (x);]])], [gl_cv_func_isnanl_in_libm=yes], [gl_cv_func_isnanl_in_libm=no]) LIBS="$save_LIBS" ]) ]) dnl Test whether isnanl() recognizes all canonical numbers which are neither dnl finite nor infinite. AC_DEFUN([gl_FUNC_ISNANL_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gl_BIGENDIAN]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether isnanl works], [gl_cv_func_isnanl_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #if __GNUC__ >= 4 # undef isnanl # define isnanl(x) __builtin_isnanl ((long double)(x)) #elif defined isnan # undef isnanl # define isnanl(x) isnan ((long double)(x)) #endif #define NWORDS \ ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) typedef union { unsigned int word[NWORDS]; long double value; } memory_long_double; /* On Irix 6.5, gcc 3.4.3 can't compute compile-time NaN, and needs the runtime type conversion. */ #ifdef __sgi static long double NaNl () { double zero = 0.0; return zero / zero; } #else # define NaNl() (0.0L / 0.0L) #endif int main () { int result = 0; if (!isnanl (NaNl ())) result |= 1; { memory_long_double m; unsigned int i; /* The isnanl function should be immune against changes in the sign bit and in the mantissa bits. The xor operation twiddles a bit that can only be a sign bit or a mantissa bit (since the exponent never extends to bit 31). */ m.value = NaNl (); m.word[NWORDS / 2] ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1); for (i = 0; i < NWORDS; i++) m.word[i] |= 1; if (!isnanl (m.value)) result |= 1; } #if ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE /* Representation of an 80-bit 'long double' as an initializer for a sequence of 'unsigned int' words. */ # ifdef WORDS_BIGENDIAN # define LDBL80_WORDS(exponent,manthi,mantlo) \ { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \ ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16), \ (unsigned int) (mantlo) << 16 \ } # else # define LDBL80_WORDS(exponent,manthi,mantlo) \ { mantlo, manthi, exponent } # endif { /* Quiet NaN. */ static memory_long_double x = { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; if (!isnanl (x.value)) result |= 2; } { /* Signalling NaN. */ static memory_long_double x = { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; if (!isnanl (x.value)) result |= 2; } /* isnanl should return something even for noncanonical values. */ { /* Pseudo-NaN. */ static memory_long_double x = { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; if (isnanl (x.value) && !isnanl (x.value)) result |= 4; } { /* Pseudo-Infinity. */ static memory_long_double x = { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; if (isnanl (x.value) && !isnanl (x.value)) result |= 8; } { /* Pseudo-Zero. */ static memory_long_double x = { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; if (isnanl (x.value) && !isnanl (x.value)) result |= 16; } { /* Unnormalized number. */ static memory_long_double x = { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; if (isnanl (x.value) && !isnanl (x.value)) result |= 32; } { /* Pseudo-Denormal. */ static memory_long_double x = { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; if (isnanl (x.value) && !isnanl (x.value)) result |= 64; } #endif return result; }]])], [gl_cv_func_isnanl_works=yes], [gl_cv_func_isnanl_works=no], [case "$host_os" in mingw*) # Guess yes on mingw, no on MSVC. AC_EGREP_CPP([Known], [ #ifdef __MINGW32__ Known #endif ], [gl_cv_func_isnanl_works="guessing yes"], [gl_cv_func_isnanl_works="guessing no"]) ;; *) gl_cv_func_isnanl_works="guessing yes" ;; esac ]) ]) ]) # iswblank.m4 serial 4 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_ISWBLANK], [ AC_REQUIRE([gl_WCTYPE_H_DEFAULTS]) AC_REQUIRE([gl_WCTYPE_H]) dnl Persuade glibc to declare iswblank(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([iswblank]) AC_CHECK_DECLS([iswblank], , , [[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #include ]]) if test $ac_cv_func_iswblank = no; then HAVE_ISWBLANK=0 if test $ac_cv_have_decl_iswblank = yes; then REPLACE_ISWBLANK=1 fi fi if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then dnl Redefine all of iswcntrl, ..., towupper in . : else if test $HAVE_ISWBLANK = 0 || test $REPLACE_ISWBLANK = 1; then dnl Redefine only iswblank. : fi fi ]) # langinfo_h.m4 serial 8 dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_LANGINFO_H], [ AC_REQUIRE([gl_LANGINFO_H_DEFAULTS]) dnl Persuade glibc-2.0.6 to define CODESET. AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl is always overridden, because of GNULIB_POSIXCHECK. gl_CHECK_NEXT_HEADERS([langinfo.h]) dnl Determine whether exists. It is missing on mingw and BeOS. HAVE_LANGINFO_CODESET=0 HAVE_LANGINFO_T_FMT_AMPM=0 HAVE_LANGINFO_ALTMON=0 HAVE_LANGINFO_ERA=0 HAVE_LANGINFO_YESEXPR=0 AC_CHECK_HEADERS_ONCE([langinfo.h]) if test $ac_cv_header_langinfo_h = yes; then HAVE_LANGINFO_H=1 dnl Determine what defines. CODESET and ERA etc. are missing dnl on OpenBSD 3.8. T_FMT_AMPM and YESEXPR, NOEXPR are missing on IRIX 5.3. dnl ALTMON_* are missing on glibc 2.26 and many other systems. AC_CACHE_CHECK([whether langinfo.h defines CODESET], [gl_cv_header_langinfo_codeset], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include int a = CODESET; ]])], [gl_cv_header_langinfo_codeset=yes], [gl_cv_header_langinfo_codeset=no]) ]) if test $gl_cv_header_langinfo_codeset = yes; then HAVE_LANGINFO_CODESET=1 fi AC_CACHE_CHECK([whether langinfo.h defines T_FMT_AMPM], [gl_cv_header_langinfo_t_fmt_ampm], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include int a = T_FMT_AMPM; ]])], [gl_cv_header_langinfo_t_fmt_ampm=yes], [gl_cv_header_langinfo_t_fmt_ampm=no]) ]) if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then HAVE_LANGINFO_T_FMT_AMPM=1 fi AC_CACHE_CHECK([whether langinfo.h defines ALTMON_1], [gl_cv_header_langinfo_altmon], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include int a = ALTMON_1; ]])], [gl_cv_header_langinfo_altmon=yes], [gl_cv_header_langinfo_altmon=no]) ]) if test $gl_cv_header_langinfo_altmon = yes; then HAVE_LANGINFO_ALTMON=1 fi AC_CACHE_CHECK([whether langinfo.h defines ERA], [gl_cv_header_langinfo_era], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include int a = ERA; ]])], [gl_cv_header_langinfo_era=yes], [gl_cv_header_langinfo_era=no]) ]) if test $gl_cv_header_langinfo_era = yes; then HAVE_LANGINFO_ERA=1 fi AC_CACHE_CHECK([whether langinfo.h defines YESEXPR], [gl_cv_header_langinfo_yesexpr], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include int a = YESEXPR; ]])], [gl_cv_header_langinfo_yesexpr=yes], [gl_cv_header_langinfo_yesexpr=no]) ]) if test $gl_cv_header_langinfo_yesexpr = yes; then HAVE_LANGINFO_YESEXPR=1 fi else HAVE_LANGINFO_H=0 fi AC_SUBST([HAVE_LANGINFO_H]) AC_SUBST([HAVE_LANGINFO_CODESET]) AC_SUBST([HAVE_LANGINFO_T_FMT_AMPM]) AC_SUBST([HAVE_LANGINFO_ALTMON]) AC_SUBST([HAVE_LANGINFO_ERA]) AC_SUBST([HAVE_LANGINFO_YESEXPR]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [nl_langinfo]) ]) AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_LANGINFO_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_LANGINFO_H_DEFAULTS], [ GNULIB_NL_LANGINFO=0; AC_SUBST([GNULIB_NL_LANGINFO]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_NL_LANGINFO=1; AC_SUBST([HAVE_NL_LANGINFO]) REPLACE_NL_LANGINFO=0; AC_SUBST([REPLACE_NL_LANGINFO]) ]) # Enable large files on systems where this is not the default. # Enable support for files on Linux file systems with 64-bit inode numbers. # Copyright 1992-1996, 1998-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # The following macro works around a problem in Autoconf's AC_FUNC_FSEEKO: # It does not set _LARGEFILE_SOURCE=1 on HP-UX/ia64 32-bit, although this # setting of _LARGEFILE_SOURCE is needed so that declares fseeko # and ftello in C++ mode as well. AC_DEFUN([gl_SET_LARGEFILE_SOURCE], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_FUNC_FSEEKO case "$host_os" in hpux*) AC_DEFINE([_LARGEFILE_SOURCE], [1], [Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2).]) ;; esac ]) # The following implementation works around a problem in autoconf <= 2.69; # AC_SYS_LARGEFILE does not configure for large inodes on Mac OS X 10.5, # or configures them incorrectly in some cases. m4_version_prereq([2.70], [] ,[ # _AC_SYS_LARGEFILE_TEST_INCLUDES # ------------------------------- m4_define([_AC_SYS_LARGEFILE_TEST_INCLUDES], [@%:@include /* Check that off_t can represent 2**63 - 1 correctly. We can't simply define LARGE_OFF_T to be 9223372036854775807, since some C++ compilers masquerading as C compilers incorrectly reject 9223372036854775807. */ @%:@define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) int off_t_is_large[[(LARGE_OFF_T % 2147483629 == 721 && LARGE_OFF_T % 2147483647 == 1) ? 1 : -1]];[]dnl ]) # _AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, # CACHE-VAR, # DESCRIPTION, # PROLOGUE, [FUNCTION-BODY]) # -------------------------------------------------------- m4_define([_AC_SYS_LARGEFILE_MACRO_VALUE], [AC_CACHE_CHECK([for $1 value needed for large files], [$3], [while :; do m4_ifval([$6], [AC_LINK_IFELSE], [AC_COMPILE_IFELSE])( [AC_LANG_PROGRAM([$5], [$6])], [$3=no; break]) m4_ifval([$6], [AC_LINK_IFELSE], [AC_COMPILE_IFELSE])( [AC_LANG_PROGRAM([@%:@define $1 $2 $5], [$6])], [$3=$2; break]) $3=unknown break done]) case $$3 in #( no | unknown) ;; *) AC_DEFINE_UNQUOTED([$1], [$$3], [$4]);; esac rm -rf conftest*[]dnl ])# _AC_SYS_LARGEFILE_MACRO_VALUE # AC_SYS_LARGEFILE # ---------------- # By default, many hosts won't let programs access large files; # one must use special compiler options to get large-file access to work. # For more details about this brain damage please see: # http://www.unix.org/version2/whatsnew/lfs20mar.html # Additionally, on Linux file systems with 64-bit inodes a file that happens # to have a 64-bit inode number cannot be accessed by 32-bit applications on # Linux x86/x86_64. This can occur with file systems such as XFS and NFS. AC_DEFUN([AC_SYS_LARGEFILE], [AC_ARG_ENABLE(largefile, [ --disable-largefile omit support for large files]) if test "$enable_largefile" != no; then AC_CACHE_CHECK([for special C compiler options needed for large files], ac_cv_sys_largefile_CC, [ac_cv_sys_largefile_CC=no if test "$GCC" != yes; then ac_save_CC=$CC while :; do # IRIX 6.2 and later do not support large files by default, # so use the C compiler's -n32 option if that helps. AC_LANG_CONFTEST([AC_LANG_PROGRAM([_AC_SYS_LARGEFILE_TEST_INCLUDES])]) AC_COMPILE_IFELSE([], [break]) CC="$CC -n32" AC_COMPILE_IFELSE([], [ac_cv_sys_largefile_CC=' -n32'; break]) break done CC=$ac_save_CC rm -f conftest.$ac_ext fi]) if test "$ac_cv_sys_largefile_CC" != no; then CC=$CC$ac_cv_sys_largefile_CC fi _AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, ac_cv_sys_file_offset_bits, [Number of bits in a file offset, on hosts where this is settable.], [_AC_SYS_LARGEFILE_TEST_INCLUDES]) if test $ac_cv_sys_file_offset_bits = unknown; then _AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, ac_cv_sys_large_files, [Define for large files, on AIX-style hosts.], [_AC_SYS_LARGEFILE_TEST_INCLUDES]) fi fi ])# AC_SYS_LARGEFILE ])# m4_version_prereq 2.70 # Enable large files on systems where this is implemented by Gnulib, not by the # system headers. # Set the variables WINDOWS_64_BIT_OFF_T, WINDOWS_64_BIT_ST_SIZE if Gnulib # overrides ensure that off_t or 'struct size.st_size' are 64-bit, respectively. AC_DEFUN([gl_LARGEFILE], [ AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in mingw*) dnl Native Windows. dnl mingw64 defines off_t to a 64-bit type already, if dnl _FILE_OFFSET_BITS=64, which is ensured by AC_SYS_LARGEFILE. AC_CACHE_CHECK([for 64-bit off_t], [gl_cv_type_off_t_64], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include int verify_off_t_size[sizeof (off_t) >= 8 ? 1 : -1]; ]], [[]])], [gl_cv_type_off_t_64=yes], [gl_cv_type_off_t_64=no]) ]) if test $gl_cv_type_off_t_64 = no; then WINDOWS_64_BIT_OFF_T=1 else WINDOWS_64_BIT_OFF_T=0 fi dnl Some mingw versions define, if _FILE_OFFSET_BITS=64, 'struct stat' dnl to 'struct _stat32i64' or 'struct _stat64' (depending on dnl _USE_32BIT_TIME_T), which has a 32-bit st_size member. AC_CACHE_CHECK([for 64-bit st_size], [gl_cv_member_st_size_64], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include struct stat buf; int verify_st_size_size[sizeof (buf.st_size) >= 8 ? 1 : -1]; ]], [[]])], [gl_cv_member_st_size_64=yes], [gl_cv_member_st_size_64=no]) ]) if test $gl_cv_member_st_size_64 = no; then WINDOWS_64_BIT_ST_SIZE=1 else WINDOWS_64_BIT_ST_SIZE=0 fi ;; *) dnl Nothing to do on gnulib's side. dnl A 64-bit off_t is dnl - already the default on Mac OS X, FreeBSD, NetBSD, OpenBSD, IRIX, dnl OSF/1, Cygwin, dnl - enabled by _FILE_OFFSET_BITS=64 (ensured by AC_SYS_LARGEFILE) on dnl glibc, HP-UX, Solaris, dnl - enabled by _LARGE_FILES=1 (ensured by AC_SYS_LARGEFILE) on AIX, dnl - impossible to achieve on Minix 3.1.8. WINDOWS_64_BIT_OFF_T=0 WINDOWS_64_BIT_ST_SIZE=0 ;; esac ]) # ldexpl.m4 serial 17 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_LDEXPL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) AC_REQUIRE([gl_FUNC_ISNANL]) dnl for ISNANL_LIBM dnl Persuade glibc to declare ldexpl(). AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Check whether it's declared. dnl Mac OS X 10.3 has ldexpl() in libc but doesn't declare it in . AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [[#include ]]) LDEXPL_LIBM= if test $HAVE_DECL_LDEXPL = 1; then gl_CHECK_LDEXPL_NO_LIBM if test $gl_cv_func_ldexpl_no_libm = no; then AC_CACHE_CHECK([whether ldexpl() can be used with libm], [gl_cv_func_ldexpl_in_libm], [ save_LIBS="$LIBS" LIBS="$LIBS -lm" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include long double x;]], [[return ldexpl (x, -1) > 0;]])], [gl_cv_func_ldexpl_in_libm=yes], [gl_cv_func_ldexpl_in_libm=no]) LIBS="$save_LIBS" ]) if test $gl_cv_func_ldexpl_in_libm = yes; then LDEXPL_LIBM=-lm fi fi if test $gl_cv_func_ldexpl_no_libm = yes \ || test $gl_cv_func_ldexpl_in_libm = yes; then save_LIBS="$LIBS" LIBS="$LIBS $LDEXPL_LIBM" gl_FUNC_LDEXPL_WORKS LIBS="$save_LIBS" case "$gl_cv_func_ldexpl_works" in *yes) gl_func_ldexpl=yes ;; *) gl_func_ldexpl=no; REPLACE_LDEXPL=1 ;; esac else gl_func_ldexpl=no fi if test $gl_func_ldexpl = yes; then AC_DEFINE([HAVE_LDEXPL], [1], [Define if the ldexpl() function is available.]) fi fi if test $HAVE_DECL_LDEXPL = 0 || test $gl_func_ldexpl = no; then dnl Find libraries needed to link lib/ldexpl.c. if test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1; then AC_REQUIRE([gl_FUNC_LDEXP]) LDEXPL_LIBM="$LDEXP_LIBM" else LDEXPL_LIBM="$ISNANL_LIBM" fi fi AC_SUBST([LDEXPL_LIBM]) ]) dnl Test whether ldexpl() can be used without linking with libm. dnl Set gl_cv_func_ldexpl_no_libm to 'yes' or 'no' accordingly. AC_DEFUN([gl_CHECK_LDEXPL_NO_LIBM], [ AC_CACHE_CHECK([whether ldexpl() can be used without linking with libm], [gl_cv_func_ldexpl_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include long double x;]], [[return ldexpl (x, -1) > 0;]])], [gl_cv_func_ldexpl_no_libm=yes], [gl_cv_func_ldexpl_no_libm=no]) ]) ]) dnl Test whether ldexpl() works on finite numbers (this fails on AIX 5.1 dnl and Mac OS X 10.4/PowerPC). AC_DEFUN([gl_FUNC_LDEXPL_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether ldexpl works], [gl_cv_func_ldexpl_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include extern #ifdef __cplusplus "C" #endif long double ldexpl (long double, int); int main() { int result = 0; { volatile long double x = 1.0; volatile long double y = ldexpl (x, -1); if (y != 0.5L) result |= 1; } { volatile long double x = 1.73205L; volatile long double y = ldexpl (x, 0); if (y != x) result |= 2; } return result; }]])], [gl_cv_func_ldexpl_works=yes], [gl_cv_func_ldexpl_works=no], [ changequote(,)dnl case "$host_os" in aix | aix[3-6]*) gl_cv_func_ldexpl_works="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_ldexpl_works="guessing yes" ;; *) gl_cv_func_ldexpl_works="guessing yes" ;; esac changequote([,])dnl ]) ]) ]) # libunistring-base.m4 serial 5 dnl Copyright (C) 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paolo Bonzini and Bruno Haible. dnl gl_LIBUNISTRING_MODULE([VERSION], [Module]) dnl Declares that the source files of Module should be compiled, unless we dnl are linking with libunistring and its version is >= the given VERSION. dnl Defines an automake conditional LIBUNISTRING_COMPILE_$MODULE that is dnl true if the source files of Module should be compiled. dnl This macro is to be used for public libunistring API, not for dnl undocumented API. dnl dnl You have to bump the VERSION argument to the next projected version dnl number each time you make a change that affects the behaviour of the dnl functions defined in Module (even if the sources of Module itself do not dnl change). AC_DEFUN([gl_LIBUNISTRING_MODULE], [ AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE]) dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from dnl gl_LIBUNISTRING_CORE if that macro has been run. AM_CONDITIONAL(AS_TR_CPP([LIBUNISTRING_COMPILE_$2]), [gl_LIBUNISTRING_VERSION_CMP([$1])]) ]) dnl gl_LIBUNISTRING_LIBHEADER([VERSION], [HeaderFile]) dnl Declares that HeaderFile should be created, unless we are linking dnl with libunistring and its version is >= the given VERSION. dnl HeaderFile should be relative to the lib directory and end in '.h'. dnl Prepares for substituting LIBUNISTRING_HEADERFILE (to HeaderFile or empty). dnl dnl When we are linking with the already installed libunistring and its version dnl is < VERSION, we create HeaderFile here, because we may compile functions dnl (via gl_LIBUNISTRING_MODULE above) that are not contained in the installed dnl version. dnl When we are linking with the already installed libunistring and its version dnl is > VERSION, we don't create HeaderFile here: it could cause compilation dnl errors in other libunistring header files if some types are missing. dnl dnl You have to bump the VERSION argument to the next projected version dnl number each time you make a non-comment change to the HeaderFile. AC_DEFUN([gl_LIBUNISTRING_LIBHEADER], [ AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE]) dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from dnl gl_LIBUNISTRING_CORE if that macro has been run. if gl_LIBUNISTRING_VERSION_CMP([$1]); then LIBUNISTRING_[]AS_TR_CPP([$2])='$2' else LIBUNISTRING_[]AS_TR_CPP([$2])= fi AC_SUBST([LIBUNISTRING_]AS_TR_CPP([$2])) ]) dnl Miscellaneous preparations/initializations. AC_DEFUN([gl_LIBUNISTRING_LIB_PREPARE], [ dnl Ensure that HAVE_LIBUNISTRING is fully determined at this point. m4_ifdef([gl_LIBUNISTRING], [AC_REQUIRE([gl_LIBUNISTRING])]) AC_REQUIRE([AC_PROG_AWK]) dnl Sed expressions to extract the parts of a version number. changequote(,) gl_libunistring_sed_extract_major='/^[0-9]/{s/^\([0-9]*\).*/\1/p;q;} i\ 0 q ' gl_libunistring_sed_extract_minor='/^[0-9][0-9]*[.][0-9]/{s/^[0-9]*[.]\([0-9]*\).*/\1/p;q;} i\ 0 q ' gl_libunistring_sed_extract_subminor='/^[0-9][0-9]*[.][0-9][0-9]*[.][0-9]/{s/^[0-9]*[.][0-9]*[.]\([0-9]*\).*/\1/p;q;} i\ 0 q ' changequote([,]) if test "$HAVE_LIBUNISTRING" = yes; then LIBUNISTRING_VERSION_MAJOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_major"` LIBUNISTRING_VERSION_MINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_minor"` LIBUNISTRING_VERSION_SUBMINOR=`echo "$LIBUNISTRING_VERSION" | sed -n -e "$gl_libunistring_sed_extract_subminor"` fi ]) dnl gl_LIBUNISTRING_VERSION_CMP([VERSION]) dnl Expands to a shell statement that evaluates to true if LIBUNISTRING_VERSION dnl is less than the VERSION argument. AC_DEFUN([gl_LIBUNISTRING_VERSION_CMP], [ { test "$HAVE_LIBUNISTRING" != yes \ || { dnl AS_LITERAL_IF exists and works fine since autoconf-2.59 at least. AS_LITERAL_IF([$1], [dnl This is the optimized variant, that assumes the argument is a literal: m4_pushdef([requested_version_major], [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^\([0-9]*\).*], [\1]), [])]) m4_pushdef([requested_version_minor], [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^[0-9]*[.]\([0-9]*\).*], [\1]), [$1])]) m4_pushdef([requested_version_subminor], [gl_LIBUNISTRING_ARG_OR_ZERO(m4_bpatsubst([$1], [^[0-9]*[.][0-9]*[.]\([0-9]*\).*], [\1]), [$1])]) test $LIBUNISTRING_VERSION_MAJOR -lt requested_version_major \ || { test $LIBUNISTRING_VERSION_MAJOR -eq requested_version_major \ && { test $LIBUNISTRING_VERSION_MINOR -lt requested_version_minor \ || { test $LIBUNISTRING_VERSION_MINOR -eq requested_version_minor \ && test $LIBUNISTRING_VERSION_SUBMINOR -lt requested_version_subminor } } } m4_popdef([requested_version_subminor]) m4_popdef([requested_version_minor]) m4_popdef([requested_version_major]) ], [dnl This is the unoptimized variant: requested_version_major=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_major"` requested_version_minor=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_minor"` requested_version_subminor=`echo '$1' | sed -n -e "$gl_libunistring_sed_extract_subminor"` test $LIBUNISTRING_VERSION_MAJOR -lt $requested_version_major \ || { test $LIBUNISTRING_VERSION_MAJOR -eq $requested_version_major \ && { test $LIBUNISTRING_VERSION_MINOR -lt $requested_version_minor \ || { test $LIBUNISTRING_VERSION_MINOR -eq $requested_version_minor \ && test $LIBUNISTRING_VERSION_SUBMINOR -lt $requested_version_subminor } } } ]) } }]) dnl gl_LIBUNISTRING_ARG_OR_ZERO([ARG], [ORIG]) expands to ARG if it is not the dnl same as ORIG, otherwise to 0. m4_define([gl_LIBUNISTRING_ARG_OR_ZERO], [m4_if([$1], [$2], [0], [$1])]) dnl Check whether limits.h has needed features. dnl Copyright 2016-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert. AC_DEFUN_ONCE([gl_LIMITS_H], [ gl_CHECK_NEXT_HEADERS([limits.h]) AC_CACHE_CHECK([whether limits.h has LLONG_MAX, WORD_BIT, ULLONG_WIDTH etc.], [gl_cv_header_limits_width], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__ #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 #endif #include long long llm = LLONG_MAX; int wb = WORD_BIT; int ullw = ULLONG_WIDTH; ]])], [gl_cv_header_limits_width=yes], [gl_cv_header_limits_width=no])]) if test "$gl_cv_header_limits_width" = yes; then LIMITS_H= else LIMITS_H=limits.h fi AC_SUBST([LIMITS_H]) AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) ]) dnl Unconditionally enables the replacement of . AC_DEFUN([gl_REPLACE_LIMITS_H], [ AC_REQUIRE([gl_LIMITS_H]) LIMITS_H='limits.h' AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) ]) # localcharset.m4 serial 8 dnl Copyright (C) 2002, 2004, 2006, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_LOCALCHARSET], [ dnl Prerequisites of lib/localcharset.c. AC_REQUIRE([AM_LANGINFO_CODESET]) ]) # locale-fr.m4 serial 19 dnl Copyright (C) 2003, 2005-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Determine the name of a french locale with traditional encoding. AC_DEFUN([gt_LOCALE_FR], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([AM_LANGINFO_CODESET]) AC_CACHE_CHECK([for a traditional french locale], [gt_cv_locale_fr], [ AC_LANG_CONFTEST([AC_LANG_SOURCE([ changequote(,)dnl #include #include #if HAVE_LANGINFO_CODESET # include #endif #include #include struct tm t; char buf[16]; int main () { /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl imitates locale dependent behaviour by looking at the environment variables, and all locales use the UTF-8 encoding. */ #if defined __BEOS__ || defined __HAIKU__ return 1; #else /* Check whether the given locale name is recognized by the system. */ # if defined _WIN32 && !defined __CYGWIN__ /* On native Windows, setlocale(category, "") looks at the system settings, not at the environment variables. Also, when an encoding suffix such as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE category of the locale to "C". */ if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) return 1; # else if (setlocale (LC_ALL, "") == NULL) return 1; # endif /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) is empty, and the behaviour of Tcl 8.4 in this locale is not useful. On OpenBSD 4.0, when an unsupported locale is specified, setlocale() succeeds but then nl_langinfo(CODESET) is "646". In this situation, some unit tests fail. On MirBSD 10, when an unsupported locale is specified, setlocale() succeeds but then nl_langinfo(CODESET) is "UTF-8". */ # if HAVE_LANGINFO_CODESET { const char *cs = nl_langinfo (CODESET); if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 || strcmp (cs, "UTF-8") == 0) return 1; } # endif # ifdef __CYGWIN__ /* On Cygwin, avoid locale names without encoding suffix, because the locale_charset() function relies on the encoding suffix. Note that LC_ALL is set on the command line. */ if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; # endif /* Check whether in the abbreviation of the second month, the second character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is only one byte long. This excludes the UTF-8 encoding. */ t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; if (strftime (buf, sizeof (buf), "%b", &t) < 3 || buf[2] != 'v') return 1; # if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy. */ /* Check whether the decimal separator is a comma. On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point are nl_langinfo(RADIXCHAR) are both ".". */ if (localeconv () ->decimal_point[0] != ',') return 1; # endif return 0; #endif } changequote([,])dnl ])]) if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then case "$host_os" in # Handle native Windows specially, because there setlocale() interprets # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", # "fr" or "fra" as "French" or "French_France.1252", # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", # "ja" as "Japanese" or "Japanese_Japan.932", # and similar. mingw*) # Test for the native Windows locale name. if (LC_ALL=French_France.1252 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr=French_France.1252 else # None found. gt_cv_locale_fr=none fi ;; *) # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the # configure script would override the LC_ALL setting. Likewise for # LC_CTYPE, which is also set at the beginning of the configure script. # Test for the usual locale name. if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr=fr_FR else # Test for the locale name with explicit encoding suffix. if (LC_ALL=fr_FR.ISO-8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr=fr_FR.ISO-8859-1 else # Test for the AIX, OSF/1, FreeBSD, NetBSD, OpenBSD locale name. if (LC_ALL=fr_FR.ISO8859-1 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr=fr_FR.ISO8859-1 else # Test for the HP-UX locale name. if (LC_ALL=fr_FR.iso88591 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr=fr_FR.iso88591 else # Test for the Solaris 7 locale name. if (LC_ALL=fr LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr=fr else # None found. gt_cv_locale_fr=none fi fi fi fi fi ;; esac fi rm -fr conftest* ]) LOCALE_FR=$gt_cv_locale_fr AC_SUBST([LOCALE_FR]) ]) dnl Determine the name of a french locale with UTF-8 encoding. AC_DEFUN([gt_LOCALE_FR_UTF8], [ AC_REQUIRE([AM_LANGINFO_CODESET]) AC_CACHE_CHECK([for a french Unicode locale], [gt_cv_locale_fr_utf8], [ AC_LANG_CONFTEST([AC_LANG_SOURCE([ changequote(,)dnl #include #include #if HAVE_LANGINFO_CODESET # include #endif #include #include struct tm t; char buf[16]; int main () { /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl imitates locale dependent behaviour by looking at the environment variables, and all locales use the UTF-8 encoding. */ #if !(defined __BEOS__ || defined __HAIKU__) /* Check whether the given locale name is recognized by the system. */ # if defined _WIN32 && !defined __CYGWIN__ /* On native Windows, setlocale(category, "") looks at the system settings, not at the environment variables. Also, when an encoding suffix such as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE category of the locale to "C". */ if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) return 1; # else if (setlocale (LC_ALL, "") == NULL) return 1; # endif /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) is empty, and the behaviour of Tcl 8.4 in this locale is not useful. On OpenBSD 4.0, when an unsupported locale is specified, setlocale() succeeds but then nl_langinfo(CODESET) is "646". In this situation, some unit tests fail. */ # if HAVE_LANGINFO_CODESET { const char *cs = nl_langinfo (CODESET); if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0) return 1; } # endif # ifdef __CYGWIN__ /* On Cygwin, avoid locale names without encoding suffix, because the locale_charset() function relies on the encoding suffix. Note that LC_ALL is set on the command line. */ if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; # endif /* Check whether in the abbreviation of the second month, the second character (should be U+00E9: LATIN SMALL LETTER E WITH ACUTE) is two bytes long, with UTF-8 encoding. */ t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; if (strftime (buf, sizeof (buf), "%b", &t) < 4 || buf[1] != (char) 0xc3 || buf[2] != (char) 0xa9 || buf[3] != 'v') return 1; #endif #if !defined __BIONIC__ /* Bionic libc's 'struct lconv' is just a dummy. */ /* Check whether the decimal separator is a comma. On NetBSD 3.0 in the fr_FR.ISO8859-1 locale, localeconv()->decimal_point are nl_langinfo(RADIXCHAR) are both ".". */ if (localeconv () ->decimal_point[0] != ',') return 1; #endif return 0; } changequote([,])dnl ])]) if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then case "$host_os" in # Handle native Windows specially, because there setlocale() interprets # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", # "fr" or "fra" as "French" or "French_France.1252", # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", # "ja" as "Japanese" or "Japanese_Japan.932", # and similar. mingw*) # Test for the hypothetical native Windows locale name. if (LC_ALL=French_France.65001 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr_utf8=French_France.65001 else # None found. gt_cv_locale_fr_utf8=none fi ;; *) # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the # configure script would override the LC_ALL setting. Likewise for # LC_CTYPE, which is also set at the beginning of the configure script. # Test for the usual locale name. if (LC_ALL=fr_FR LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr_utf8=fr_FR else # Test for the locale name with explicit encoding suffix. if (LC_ALL=fr_FR.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr_utf8=fr_FR.UTF-8 else # Test for the Solaris 7 locale name. if (LC_ALL=fr.UTF-8 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_fr_utf8=fr.UTF-8 else # None found. gt_cv_locale_fr_utf8=none fi fi fi ;; esac fi rm -fr conftest* ]) LOCALE_FR_UTF8=$gt_cv_locale_fr_utf8 AC_SUBST([LOCALE_FR_UTF8]) ]) # locale-ja.m4 serial 14 dnl Copyright (C) 2003, 2005-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Determine the name of a japanese locale with EUC-JP encoding. AC_DEFUN([gt_LOCALE_JA], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([AM_LANGINFO_CODESET]) AC_CACHE_CHECK([for a traditional japanese locale], [gt_cv_locale_ja], [ AC_LANG_CONFTEST([AC_LANG_SOURCE([ changequote(,)dnl #include #include #if HAVE_LANGINFO_CODESET # include #endif #include #include struct tm t; char buf[16]; int main () { /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl imitates locale dependent behaviour by looking at the environment variables, and all locales use the UTF-8 encoding. */ #if defined __BEOS__ || defined __HAIKU__ return 1; #else /* Check whether the given locale name is recognized by the system. */ # if defined _WIN32 && !defined __CYGWIN__ /* On native Windows, setlocale(category, "") looks at the system settings, not at the environment variables. Also, when an encoding suffix such as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE category of the locale to "C". */ if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) return 1; # else if (setlocale (LC_ALL, "") == NULL) return 1; # endif /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) is empty, and the behaviour of Tcl 8.4 in this locale is not useful. On OpenBSD 4.0, when an unsupported locale is specified, setlocale() succeeds but then nl_langinfo(CODESET) is "646". In this situation, some unit tests fail. On MirBSD 10, when an unsupported locale is specified, setlocale() succeeds but then nl_langinfo(CODESET) is "UTF-8". */ # if HAVE_LANGINFO_CODESET { const char *cs = nl_langinfo (CODESET); if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 || strcmp (cs, "UTF-8") == 0) return 1; } # endif # ifdef __CYGWIN__ /* On Cygwin, avoid locale names without encoding suffix, because the locale_charset() function relies on the encoding suffix. Note that LC_ALL is set on the command line. */ if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; # endif /* Check whether MB_CUR_MAX is > 1. This excludes the dysfunctional locales on Cygwin 1.5.x. */ if (MB_CUR_MAX == 1) return 1; /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. This excludes the UTF-8 encoding (except on MirBSD). */ { const char *p; t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; for (p = buf; *p != '\0'; p++) if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) return 1; } return 0; #endif } changequote([,])dnl ])]) if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then case "$host_os" in # Handle native Windows specially, because there setlocale() interprets # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", # "fr" or "fra" as "French" or "French_France.1252", # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", # "ja" as "Japanese" or "Japanese_Japan.932", # and similar. mingw*) # Note that on native Windows, the Japanese locale is # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we # cannot use it here. gt_cv_locale_ja=none ;; *) # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the # configure script would override the LC_ALL setting. Likewise for # LC_CTYPE, which is also set at the beginning of the configure script. # Test for the AIX locale name. if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_ja=ja_JP else # Test for the locale name with explicit encoding suffix. if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_ja=ja_JP.EUC-JP else # Test for the HP-UX, OSF/1, NetBSD locale name. if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_ja=ja_JP.eucJP else # Test for the IRIX, FreeBSD locale name. if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_ja=ja_JP.EUC else # Test for the Solaris 7 locale name. if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_ja=ja else # Special test for NetBSD 1.6. if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then gt_cv_locale_ja=ja_JP.eucJP else # None found. gt_cv_locale_ja=none fi fi fi fi fi fi ;; esac fi rm -fr conftest* ]) LOCALE_JA=$gt_cv_locale_ja AC_SUBST([LOCALE_JA]) ]) # locale-zh.m4 serial 14 dnl Copyright (C) 2003, 2005-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Determine the name of a chinese locale with GB18030 encoding. AC_DEFUN([gt_LOCALE_ZH_CN], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([AM_LANGINFO_CODESET]) AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [ AC_LANG_CONFTEST([AC_LANG_SOURCE([ changequote(,)dnl #include #include #include #if HAVE_LANGINFO_CODESET # include #endif #include #include struct tm t; char buf[16]; int main () { /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl imitates locale dependent behaviour by looking at the environment variables, and all locales use the UTF-8 encoding. */ #if defined __BEOS__ || defined __HAIKU__ return 1; #else /* Check whether the given locale name is recognized by the system. */ # if defined _WIN32 && !defined __CYGWIN__ /* On native Windows, setlocale(category, "") looks at the system settings, not at the environment variables. Also, when an encoding suffix such as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE category of the locale to "C". */ if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) return 1; # else if (setlocale (LC_ALL, "") == NULL) return 1; # endif /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) is empty, and the behaviour of Tcl 8.4 in this locale is not useful. On OpenBSD 4.0, when an unsupported locale is specified, setlocale() succeeds but then nl_langinfo(CODESET) is "646". In this situation, some unit tests fail. On MirBSD 10, when an unsupported locale is specified, setlocale() succeeds but then nl_langinfo(CODESET) is "UTF-8". */ # if HAVE_LANGINFO_CODESET { const char *cs = nl_langinfo (CODESET); if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 || strcmp (cs, "UTF-8") == 0) return 1; } # endif # ifdef __CYGWIN__ /* On Cygwin, avoid locale names without encoding suffix, because the locale_charset() function relies on the encoding suffix. Note that LC_ALL is set on the command line. */ if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; # endif /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. This excludes the UTF-8 encoding (except on MirBSD). */ { const char *p; t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; for (p = buf; *p != '\0'; p++) if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) return 1; } /* Check whether a typical GB18030 multibyte sequence is recognized as a single wide character. This excludes the GB2312 and GBK encodings. */ if (mblen ("\203\062\332\066", 5) != 4) return 1; return 0; #endif } changequote([,])dnl ])]) if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then case "$host_os" in # Handle native Windows specially, because there setlocale() interprets # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", # "fr" or "fra" as "French" or "French_France.1252", # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", # "ja" as "Japanese" or "Japanese_Japan.932", # and similar. mingw*) # Test for the hypothetical native Windows locale name. if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_zh_CN=Chinese_China.54936 else # None found. gt_cv_locale_zh_CN=none fi ;; solaris2.8) # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK. # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core. gt_cv_locale_zh_CN=none ;; *) # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the # configure script would override the LC_ALL setting. Likewise for # LC_CTYPE, which is also set at the beginning of the configure script. # Test for the locale name without encoding suffix. if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_zh_CN=zh_CN else # Test for the locale name with explicit encoding suffix. if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_zh_CN=zh_CN.GB18030 else # None found. gt_cv_locale_zh_CN=none fi fi ;; esac else # If there was a link error, due to mblen(), the system is so old that # it certainly doesn't have a chinese locale. gt_cv_locale_zh_CN=none fi rm -fr conftest* ]) LOCALE_ZH_CN=$gt_cv_locale_zh_CN AC_SUBST([LOCALE_ZH_CN]) ]) # locale_h.m4 serial 24 dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_LOCALE_H], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_LOCALE_H_DEFAULTS]) dnl Persuade glibc to define locale_t and the int_p_*, int_n_* dnl members of 'struct lconv'. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl If is replaced, then must also be replaced. AC_REQUIRE([gl_STDDEF_H]) AC_REQUIRE([gl_LOCALE_T]) dnl Solaris 11.0 defines the int_p_*, int_n_* members of 'struct lconv' dnl only if _LCONV_C99 is defined. AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in solaris*) AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.]) ;; esac AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001], [gl_cv_header_locale_h_posix2001], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include int x = LC_MESSAGES; int y = sizeof (((struct lconv *) 0)->decimal_point);]], [[]])], [gl_cv_header_locale_h_posix2001=yes], [gl_cv_header_locale_h_posix2001=no])]) dnl Check whether 'struct lconv' is complete. dnl Bionic libc's 'struct lconv' is just a dummy. dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x, dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members. AC_CACHE_CHECK([whether struct lconv is properly defined], [gl_cv_sys_struct_lconv_ok], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include struct lconv l; int x = sizeof (l.decimal_point); int y = sizeof (l.int_p_cs_precedes);]], [[]])], [gl_cv_sys_struct_lconv_ok=yes], [gl_cv_sys_struct_lconv_ok=no]) ]) if test $gl_cv_sys_struct_lconv_ok = no; then dnl On native Windows with MSVC, merely define these member names as macros. dnl This avoids trouble in C++ mode. case "$host_os" in mingw*) AC_EGREP_CPP([Special], [ #ifdef _MSC_VER Special #endif ], [], [REPLACE_STRUCT_LCONV=1]) ;; *) REPLACE_STRUCT_LCONV=1 ;; esac fi dnl is always overridden, because of GNULIB_POSIXCHECK. gl_NEXT_HEADERS([locale.h]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include /* Some systems provide declarations in a non-standard header. */ #if HAVE_XLOCALE_H # include #endif ]], [setlocale newlocale duplocale freelocale]) ]) dnl Checks to determine whether the system has the locale_t type, dnl and how to obtain it. AC_DEFUN([gl_LOCALE_T], [ dnl Persuade glibc and Solaris to define locale_t. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) dnl Check whether use of locale_t requires inclusion of , dnl e.g. on Mac OS X 10.5. If does not define locale_t by dnl itself, we assume that will do so. AC_CACHE_CHECK([whether locale.h defines locale_t], [gl_cv_header_locale_has_locale_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include locale_t x;]], [[]])], [gl_cv_header_locale_has_locale_t=yes], [gl_cv_header_locale_has_locale_t=no]) ]) dnl Check for . AC_CHECK_HEADERS_ONCE([xlocale.h]) if test $ac_cv_header_xlocale_h = yes; then HAVE_XLOCALE_H=1 if test $gl_cv_header_locale_has_locale_t = yes; then gl_cv_header_locale_h_needs_xlocale_h=no else gl_cv_header_locale_h_needs_xlocale_h=yes fi HAVE_LOCALE_T=1 else HAVE_XLOCALE_H=0 gl_cv_header_locale_h_needs_xlocale_h=no if test $gl_cv_header_locale_has_locale_t = yes; then HAVE_LOCALE_T=1 else HAVE_LOCALE_T=0 fi fi AC_SUBST([HAVE_XLOCALE_H]) ]) AC_DEFUN([gl_LOCALE_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_LOCALE_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_LOCALE_H_DEFAULTS], [ GNULIB_LOCALECONV=0; AC_SUBST([GNULIB_LOCALECONV]) GNULIB_SETLOCALE=0; AC_SUBST([GNULIB_SETLOCALE]) GNULIB_SETLOCALE_NULL=0; AC_SUBST([GNULIB_SETLOCALE_NULL]) GNULIB_DUPLOCALE=0; AC_SUBST([GNULIB_DUPLOCALE]) GNULIB_LOCALENAME=0; AC_SUBST([GNULIB_LOCALENAME]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_NEWLOCALE=1; AC_SUBST([HAVE_NEWLOCALE]) HAVE_DUPLOCALE=1; AC_SUBST([HAVE_DUPLOCALE]) HAVE_FREELOCALE=1; AC_SUBST([HAVE_FREELOCALE]) REPLACE_LOCALECONV=0; AC_SUBST([REPLACE_LOCALECONV]) REPLACE_SETLOCALE=0; AC_SUBST([REPLACE_SETLOCALE]) REPLACE_NEWLOCALE=0; AC_SUBST([REPLACE_NEWLOCALE]) REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE]) REPLACE_FREELOCALE=0; AC_SUBST([REPLACE_FREELOCALE]) REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV]) ]) # localeconv.m4 serial 1 dnl Copyright (C) 2012-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_LOCALECONV], [ AC_REQUIRE([gl_LOCALE_H_DEFAULTS]) AC_REQUIRE([gl_LOCALE_H]) if test $REPLACE_STRUCT_LCONV = 1; then REPLACE_LOCALECONV=1 fi ]) # Prerequisites of lib/localeconv.c. AC_DEFUN([gl_PREREQ_LOCALECONV], [ AC_CHECK_MEMBERS([struct lconv.decimal_point], [], [], [[#include ]]) ]) # localtime-buffer.m4 serial 1 dnl Copyright (C) 2017-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_LOCALTIME_BUFFER_DEFAULTS], [ NEED_LOCALTIME_BUFFER=0 ]) dnl Macro invoked from other modules, to signal that the compilation of dnl module 'localtime-buffer' is needed. AC_DEFUN([gl_LOCALTIME_BUFFER_NEEDED], [ AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS]) AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) NEED_LOCALTIME_BUFFER=1 REPLACE_GMTIME=1 REPLACE_LOCALTIME=1 ]) # lock.m4 serial 14 dnl Copyright (C) 2005-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_DEFUN([gl_LOCK], [ AC_REQUIRE([gl_THREADLIB]) if test "$gl_threads_api" = posix; then # OSF/1 4.0 and Mac OS X 10.1 lack the pthread_rwlock_t type and the # pthread_rwlock_* functions. has_rwlock=false AC_CHECK_TYPE([pthread_rwlock_t], [has_rwlock=true AC_DEFINE([HAVE_PTHREAD_RWLOCK], [1], [Define if the POSIX multithreading library has read/write locks.])], [], [#include ]) if $has_rwlock; then gl_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER fi # glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro. AC_COMPILE_IFELSE([ AC_LANG_PROGRAM( [[#include ]], [[ #if __FreeBSD__ == 4 error "No, in FreeBSD 4.0 recursive mutexes actually don't work." #elif (defined __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ \ && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1070) error "No, in Mac OS X < 10.7 recursive mutexes actually don't work." #else int x = (int)PTHREAD_MUTEX_RECURSIVE; return !x; #endif ]])], [AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], [1], [Define if the defines PTHREAD_MUTEX_RECURSIVE.])]) fi gl_PREREQ_LOCK ]) # Prerequisites of lib/glthread/lock.c. AC_DEFUN([gl_PREREQ_LOCK], [:]) # serial 33 # Copyright (C) 1997-2001, 2003-2020 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. dnl From Jim Meyering. AC_DEFUN([gl_FUNC_LSTAT], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) dnl If lstat does not exist, the replacement does dnl "#define lstat stat", and lstat.c is a no-op. AC_CHECK_FUNCS_ONCE([lstat]) if test $ac_cv_func_lstat = yes; then AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK]) case $host_os,$gl_cv_func_lstat_dereferences_slashed_symlink in solaris* | *no) REPLACE_LSTAT=1 ;; esac else HAVE_LSTAT=0 fi ]) # Prerequisites of lib/lstat.c. AC_DEFUN([gl_PREREQ_LSTAT], [:]) AC_DEFUN([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK], [ dnl We don't use AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK any more, because it dnl is no longer maintained in Autoconf and because it invokes AC_LIBOBJ. AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether lstat correctly handles trailing slash], [gl_cv_func_lstat_dereferences_slashed_symlink], [rm -f conftest.sym conftest.file echo >conftest.file AC_RUN_IFELSE( [AC_LANG_PROGRAM( [AC_INCLUDES_DEFAULT], [[struct stat sbuf; if (symlink ("conftest.file", "conftest.sym") != 0) return 1; /* Linux will dereference the symlink and fail, as required by POSIX. That is better in the sense that it means we will not have to compile and use the lstat wrapper. */ return lstat ("conftest.sym/", &sbuf) == 0; ]])], [gl_cv_func_lstat_dereferences_slashed_symlink=yes], [gl_cv_func_lstat_dereferences_slashed_symlink=no], [case "$host_os" in linux-* | linux) # Guess yes on Linux systems. gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;; *-gnu* | gnu*) # Guess yes on glibc systems. gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;; mingw*) # Guess no on native Windows. gl_cv_func_lstat_dereferences_slashed_symlink="guessing no" ;; *) # If we don't know, obey --enable-cross-guesses. gl_cv_func_lstat_dereferences_slashed_symlink="$gl_cross_guess_normal" ;; esac ]) rm -f conftest.sym conftest.file ]) case "$gl_cv_func_lstat_dereferences_slashed_symlink" in *yes) AC_DEFINE_UNQUOTED([LSTAT_FOLLOWS_SLASHED_SYMLINK], [1], [Define to 1 if 'lstat' dereferences a symlink specified with a trailing slash.]) ;; esac ]) # malloc.m4 serial 20 dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # This is adapted with modifications from upstream Autoconf here: # https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=04be2b7a29d65d9a08e64e8e56e594c91749598c AC_DEFUN([_AC_FUNC_MALLOC_IF], [ AC_REQUIRE([AC_HEADER_STDC])dnl AC_REQUIRE([AC_CANONICAL_HOST])dnl for cross-compiles AC_CHECK_HEADERS([stdlib.h]) AC_CACHE_CHECK([for GNU libc compatible malloc], [ac_cv_func_malloc_0_nonnull], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#if defined STDC_HEADERS || defined HAVE_STDLIB_H # include #else char *malloc (); #endif ]], [[char *p = malloc (0); int result = !p; free (p); return result;]]) ], [ac_cv_func_malloc_0_nonnull=yes], [ac_cv_func_malloc_0_nonnull=no], [case "$host_os" in # Guess yes on platforms where we know the result. *-gnu* | gnu* | *-musl* | freebsd* | netbsd* | openbsd* \ | hpux* | solaris* | cygwin* | mingw*) ac_cv_func_malloc_0_nonnull="guessing yes" ;; # If we don't know, obey --enable-cross-guesses. *) ac_cv_func_malloc_0_nonnull="$gl_cross_guess_normal" ;; esac ]) ]) case "$ac_cv_func_malloc_0_nonnull" in *yes) $1 ;; *) $2 ;; esac ])# _AC_FUNC_MALLOC_IF # gl_FUNC_MALLOC_GNU # ------------------ # Test whether 'malloc (0)' is handled like in GNU libc, and replace malloc if # it is not. AC_DEFUN([gl_FUNC_MALLOC_GNU], [ AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) dnl _AC_FUNC_MALLOC_IF is defined in Autoconf. _AC_FUNC_MALLOC_IF( [AC_DEFINE([HAVE_MALLOC_GNU], [1], [Define to 1 if your system has a GNU libc compatible 'malloc' function, and to 0 otherwise.])], [AC_DEFINE([HAVE_MALLOC_GNU], [0]) REPLACE_MALLOC=1 ]) ]) # gl_FUNC_MALLOC_POSIX # -------------------- # Test whether 'malloc' is POSIX compliant (sets errno to ENOMEM when it # fails), and replace malloc if it is not. AC_DEFUN([gl_FUNC_MALLOC_POSIX], [ AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) AC_REQUIRE([gl_CHECK_MALLOC_POSIX]) if test $gl_cv_func_malloc_posix = yes; then AC_DEFINE([HAVE_MALLOC_POSIX], [1], [Define if the 'malloc' function is POSIX compliant.]) else REPLACE_MALLOC=1 fi ]) # Test whether malloc, realloc, calloc are POSIX compliant, # Set gl_cv_func_malloc_posix to yes or no accordingly. AC_DEFUN([gl_CHECK_MALLOC_POSIX], [ AC_CACHE_CHECK([whether malloc, realloc, calloc are POSIX compliant], [gl_cv_func_malloc_posix], [ dnl It is too dangerous to try to allocate a large amount of memory: dnl some systems go to their knees when you do that. So assume that dnl all Unix implementations of the function are POSIX compliant. AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[]], [[#if defined _WIN32 && ! defined __CYGWIN__ choke me #endif ]])], [gl_cv_func_malloc_posix=yes], [gl_cv_func_malloc_posix=no]) ]) ]) # malloca.m4 serial 2 dnl Copyright (C) 2003-2004, 2006-2007, 2009-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_MALLOCA], [ dnl Use the autoconf tests for alloca(), but not the AC_SUBSTed variables dnl @ALLOCA@ and @LTALLOCA@. dnl gl_FUNC_ALLOCA dnl Already brought in by the module dependencies. AC_REQUIRE([gl_EEMALLOC]) ]) # math_h.m4 serial 119 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_MATH_H], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) gl_CHECK_NEXT_HEADERS([math.h]) AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include ]], [[/* Solaris 10 has a broken definition of NAN. Other platforms fail to provide NAN, or provide it only in C99 mode; this test only needs to fail when NAN is provided but wrong. */ float f = 1.0f; #ifdef NAN f = NAN; #endif return f == 0;]])], [gl_cv_header_math_nan_works=yes], [gl_cv_header_math_nan_works=no])]) if test $gl_cv_header_math_nan_works = no; then REPLACE_NAN=1 fi AC_CACHE_CHECK([whether HUGE_VAL works], [gl_cv_header_math_huge_val_works], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include ]], [[/* Solaris 10 has a broken definition of HUGE_VAL. */ double d = HUGE_VAL; return d == 0;]])], [gl_cv_header_math_huge_val_works=yes], [gl_cv_header_math_huge_val_works=no])]) if test $gl_cv_header_math_huge_val_works = no; then REPLACE_HUGE_VAL=1 fi dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [acosf acosl asinf asinl atanf atanl cbrt cbrtf cbrtl ceilf ceill copysign copysignf copysignl cosf cosl coshf expf expl exp2 exp2f exp2l expm1 expm1f expm1l fabsf fabsl floorf floorl fma fmaf fmal fmod fmodf fmodl frexpf frexpl hypotf hypotl ilogb ilogbf ilogbl ldexpf ldexpl log logf logl log10 log10f log10l log1p log1pf log1pl log2 log2f log2l logb logbf logbl modf modff modfl powf remainder remainderf remainderl rint rintf rintl round roundf roundl sinf sinl sinhf sqrtf sqrtl tanf tanl tanhf trunc truncf truncl]) ]) AC_DEFUN([gl_MATH_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_MATH_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_MATH_H_DEFAULTS], [ GNULIB_ACOSF=0; AC_SUBST([GNULIB_ACOSF]) GNULIB_ACOSL=0; AC_SUBST([GNULIB_ACOSL]) GNULIB_ASINF=0; AC_SUBST([GNULIB_ASINF]) GNULIB_ASINL=0; AC_SUBST([GNULIB_ASINL]) GNULIB_ATANF=0; AC_SUBST([GNULIB_ATANF]) GNULIB_ATANL=0; AC_SUBST([GNULIB_ATANL]) GNULIB_ATAN2F=0; AC_SUBST([GNULIB_ATAN2F]) GNULIB_CBRT=0; AC_SUBST([GNULIB_CBRT]) GNULIB_CBRTF=0; AC_SUBST([GNULIB_CBRTF]) GNULIB_CBRTL=0; AC_SUBST([GNULIB_CBRTL]) GNULIB_CEIL=0; AC_SUBST([GNULIB_CEIL]) GNULIB_CEILF=0; AC_SUBST([GNULIB_CEILF]) GNULIB_CEILL=0; AC_SUBST([GNULIB_CEILL]) GNULIB_COPYSIGN=0; AC_SUBST([GNULIB_COPYSIGN]) GNULIB_COPYSIGNF=0; AC_SUBST([GNULIB_COPYSIGNF]) GNULIB_COPYSIGNL=0; AC_SUBST([GNULIB_COPYSIGNL]) GNULIB_COSF=0; AC_SUBST([GNULIB_COSF]) GNULIB_COSL=0; AC_SUBST([GNULIB_COSL]) GNULIB_COSHF=0; AC_SUBST([GNULIB_COSHF]) GNULIB_EXPF=0; AC_SUBST([GNULIB_EXPF]) GNULIB_EXPL=0; AC_SUBST([GNULIB_EXPL]) GNULIB_EXP2=0; AC_SUBST([GNULIB_EXP2]) GNULIB_EXP2F=0; AC_SUBST([GNULIB_EXP2F]) GNULIB_EXP2L=0; AC_SUBST([GNULIB_EXP2L]) GNULIB_EXPM1=0; AC_SUBST([GNULIB_EXPM1]) GNULIB_EXPM1F=0; AC_SUBST([GNULIB_EXPM1F]) GNULIB_EXPM1L=0; AC_SUBST([GNULIB_EXPM1L]) GNULIB_FABSF=0; AC_SUBST([GNULIB_FABSF]) GNULIB_FABSL=0; AC_SUBST([GNULIB_FABSL]) GNULIB_FLOOR=0; AC_SUBST([GNULIB_FLOOR]) GNULIB_FLOORF=0; AC_SUBST([GNULIB_FLOORF]) GNULIB_FLOORL=0; AC_SUBST([GNULIB_FLOORL]) GNULIB_FMA=0; AC_SUBST([GNULIB_FMA]) GNULIB_FMAF=0; AC_SUBST([GNULIB_FMAF]) GNULIB_FMAL=0; AC_SUBST([GNULIB_FMAL]) GNULIB_FMOD=0; AC_SUBST([GNULIB_FMOD]) GNULIB_FMODF=0; AC_SUBST([GNULIB_FMODF]) GNULIB_FMODL=0; AC_SUBST([GNULIB_FMODL]) GNULIB_FREXPF=0; AC_SUBST([GNULIB_FREXPF]) GNULIB_FREXP=0; AC_SUBST([GNULIB_FREXP]) GNULIB_FREXPL=0; AC_SUBST([GNULIB_FREXPL]) GNULIB_HYPOT=0; AC_SUBST([GNULIB_HYPOT]) GNULIB_HYPOTF=0; AC_SUBST([GNULIB_HYPOTF]) GNULIB_HYPOTL=0; AC_SUBST([GNULIB_HYPOTL]) GNULIB_ILOGB=0; AC_SUBST([GNULIB_ILOGB]) GNULIB_ILOGBF=0; AC_SUBST([GNULIB_ILOGBF]) GNULIB_ILOGBL=0; AC_SUBST([GNULIB_ILOGBL]) GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE]) GNULIB_ISINF=0; AC_SUBST([GNULIB_ISINF]) GNULIB_ISNAN=0; AC_SUBST([GNULIB_ISNAN]) GNULIB_ISNANF=0; AC_SUBST([GNULIB_ISNANF]) GNULIB_ISNAND=0; AC_SUBST([GNULIB_ISNAND]) GNULIB_ISNANL=0; AC_SUBST([GNULIB_ISNANL]) GNULIB_LDEXPF=0; AC_SUBST([GNULIB_LDEXPF]) GNULIB_LDEXPL=0; AC_SUBST([GNULIB_LDEXPL]) GNULIB_LOG=0; AC_SUBST([GNULIB_LOG]) GNULIB_LOGF=0; AC_SUBST([GNULIB_LOGF]) GNULIB_LOGL=0; AC_SUBST([GNULIB_LOGL]) GNULIB_LOG10=0; AC_SUBST([GNULIB_LOG10]) GNULIB_LOG10F=0; AC_SUBST([GNULIB_LOG10F]) GNULIB_LOG10L=0; AC_SUBST([GNULIB_LOG10L]) GNULIB_LOG1P=0; AC_SUBST([GNULIB_LOG1P]) GNULIB_LOG1PF=0; AC_SUBST([GNULIB_LOG1PF]) GNULIB_LOG1PL=0; AC_SUBST([GNULIB_LOG1PL]) GNULIB_LOG2=0; AC_SUBST([GNULIB_LOG2]) GNULIB_LOG2F=0; AC_SUBST([GNULIB_LOG2F]) GNULIB_LOG2L=0; AC_SUBST([GNULIB_LOG2L]) GNULIB_LOGB=0; AC_SUBST([GNULIB_LOGB]) GNULIB_LOGBF=0; AC_SUBST([GNULIB_LOGBF]) GNULIB_LOGBL=0; AC_SUBST([GNULIB_LOGBL]) GNULIB_MODF=0; AC_SUBST([GNULIB_MODF]) GNULIB_MODFF=0; AC_SUBST([GNULIB_MODFF]) GNULIB_MODFL=0; AC_SUBST([GNULIB_MODFL]) GNULIB_POWF=0; AC_SUBST([GNULIB_POWF]) GNULIB_REMAINDER=0; AC_SUBST([GNULIB_REMAINDER]) GNULIB_REMAINDERF=0; AC_SUBST([GNULIB_REMAINDERF]) GNULIB_REMAINDERL=0; AC_SUBST([GNULIB_REMAINDERL]) GNULIB_RINT=0; AC_SUBST([GNULIB_RINT]) GNULIB_RINTF=0; AC_SUBST([GNULIB_RINTF]) GNULIB_RINTL=0; AC_SUBST([GNULIB_RINTL]) GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND]) GNULIB_ROUNDF=0; AC_SUBST([GNULIB_ROUNDF]) GNULIB_ROUNDL=0; AC_SUBST([GNULIB_ROUNDL]) GNULIB_SIGNBIT=0; AC_SUBST([GNULIB_SIGNBIT]) GNULIB_SINF=0; AC_SUBST([GNULIB_SINF]) GNULIB_SINL=0; AC_SUBST([GNULIB_SINL]) GNULIB_SINHF=0; AC_SUBST([GNULIB_SINHF]) GNULIB_SQRTF=0; AC_SUBST([GNULIB_SQRTF]) GNULIB_SQRTL=0; AC_SUBST([GNULIB_SQRTL]) GNULIB_TANF=0; AC_SUBST([GNULIB_TANF]) GNULIB_TANL=0; AC_SUBST([GNULIB_TANL]) GNULIB_TANHF=0; AC_SUBST([GNULIB_TANHF]) GNULIB_TRUNC=0; AC_SUBST([GNULIB_TRUNC]) GNULIB_TRUNCF=0; AC_SUBST([GNULIB_TRUNCF]) GNULIB_TRUNCL=0; AC_SUBST([GNULIB_TRUNCL]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_ACOSF=1; AC_SUBST([HAVE_ACOSF]) HAVE_ACOSL=1; AC_SUBST([HAVE_ACOSL]) HAVE_ASINF=1; AC_SUBST([HAVE_ASINF]) HAVE_ASINL=1; AC_SUBST([HAVE_ASINL]) HAVE_ATANF=1; AC_SUBST([HAVE_ATANF]) HAVE_ATANL=1; AC_SUBST([HAVE_ATANL]) HAVE_ATAN2F=1; AC_SUBST([HAVE_ATAN2F]) HAVE_CBRT=1; AC_SUBST([HAVE_CBRT]) HAVE_CBRTF=1; AC_SUBST([HAVE_CBRTF]) HAVE_CBRTL=1; AC_SUBST([HAVE_CBRTL]) HAVE_COPYSIGN=1; AC_SUBST([HAVE_COPYSIGN]) HAVE_COPYSIGNL=1; AC_SUBST([HAVE_COPYSIGNL]) HAVE_COSF=1; AC_SUBST([HAVE_COSF]) HAVE_COSL=1; AC_SUBST([HAVE_COSL]) HAVE_COSHF=1; AC_SUBST([HAVE_COSHF]) HAVE_EXPF=1; AC_SUBST([HAVE_EXPF]) HAVE_EXPL=1; AC_SUBST([HAVE_EXPL]) HAVE_EXPM1=1; AC_SUBST([HAVE_EXPM1]) HAVE_EXPM1F=1; AC_SUBST([HAVE_EXPM1F]) HAVE_FABSF=1; AC_SUBST([HAVE_FABSF]) HAVE_FABSL=1; AC_SUBST([HAVE_FABSL]) HAVE_FMA=1; AC_SUBST([HAVE_FMA]) HAVE_FMAF=1; AC_SUBST([HAVE_FMAF]) HAVE_FMAL=1; AC_SUBST([HAVE_FMAL]) HAVE_FMODF=1; AC_SUBST([HAVE_FMODF]) HAVE_FMODL=1; AC_SUBST([HAVE_FMODL]) HAVE_FREXPF=1; AC_SUBST([HAVE_FREXPF]) HAVE_HYPOTF=1; AC_SUBST([HAVE_HYPOTF]) HAVE_HYPOTL=1; AC_SUBST([HAVE_HYPOTL]) HAVE_ILOGB=1; AC_SUBST([HAVE_ILOGB]) HAVE_ILOGBF=1; AC_SUBST([HAVE_ILOGBF]) HAVE_ILOGBL=1; AC_SUBST([HAVE_ILOGBL]) HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF]) HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND]) HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL]) HAVE_LDEXPF=1; AC_SUBST([HAVE_LDEXPF]) HAVE_LOGF=1; AC_SUBST([HAVE_LOGF]) HAVE_LOGL=1; AC_SUBST([HAVE_LOGL]) HAVE_LOG10F=1; AC_SUBST([HAVE_LOG10F]) HAVE_LOG10L=1; AC_SUBST([HAVE_LOG10L]) HAVE_LOG1P=1; AC_SUBST([HAVE_LOG1P]) HAVE_LOG1PF=1; AC_SUBST([HAVE_LOG1PF]) HAVE_LOG1PL=1; AC_SUBST([HAVE_LOG1PL]) HAVE_LOGBF=1; AC_SUBST([HAVE_LOGBF]) HAVE_LOGBL=1; AC_SUBST([HAVE_LOGBL]) HAVE_MODFF=1; AC_SUBST([HAVE_MODFF]) HAVE_MODFL=1; AC_SUBST([HAVE_MODFL]) HAVE_POWF=1; AC_SUBST([HAVE_POWF]) HAVE_REMAINDER=1; AC_SUBST([HAVE_REMAINDER]) HAVE_REMAINDERF=1; AC_SUBST([HAVE_REMAINDERF]) HAVE_RINT=1; AC_SUBST([HAVE_RINT]) HAVE_RINTL=1; AC_SUBST([HAVE_RINTL]) HAVE_SINF=1; AC_SUBST([HAVE_SINF]) HAVE_SINL=1; AC_SUBST([HAVE_SINL]) HAVE_SINHF=1; AC_SUBST([HAVE_SINHF]) HAVE_SQRTF=1; AC_SUBST([HAVE_SQRTF]) HAVE_SQRTL=1; AC_SUBST([HAVE_SQRTL]) HAVE_TANF=1; AC_SUBST([HAVE_TANF]) HAVE_TANL=1; AC_SUBST([HAVE_TANL]) HAVE_TANHF=1; AC_SUBST([HAVE_TANHF]) HAVE_DECL_ACOSL=1; AC_SUBST([HAVE_DECL_ACOSL]) HAVE_DECL_ASINL=1; AC_SUBST([HAVE_DECL_ASINL]) HAVE_DECL_ATANL=1; AC_SUBST([HAVE_DECL_ATANL]) HAVE_DECL_CBRTF=1; AC_SUBST([HAVE_DECL_CBRTF]) HAVE_DECL_CBRTL=1; AC_SUBST([HAVE_DECL_CBRTL]) HAVE_DECL_CEILF=1; AC_SUBST([HAVE_DECL_CEILF]) HAVE_DECL_CEILL=1; AC_SUBST([HAVE_DECL_CEILL]) HAVE_DECL_COPYSIGNF=1; AC_SUBST([HAVE_DECL_COPYSIGNF]) HAVE_DECL_COSL=1; AC_SUBST([HAVE_DECL_COSL]) HAVE_DECL_EXPL=1; AC_SUBST([HAVE_DECL_EXPL]) HAVE_DECL_EXP2=1; AC_SUBST([HAVE_DECL_EXP2]) HAVE_DECL_EXP2F=1; AC_SUBST([HAVE_DECL_EXP2F]) HAVE_DECL_EXP2L=1; AC_SUBST([HAVE_DECL_EXP2L]) HAVE_DECL_EXPM1L=1; AC_SUBST([HAVE_DECL_EXPM1L]) HAVE_DECL_FLOORF=1; AC_SUBST([HAVE_DECL_FLOORF]) HAVE_DECL_FLOORL=1; AC_SUBST([HAVE_DECL_FLOORL]) HAVE_DECL_FREXPL=1; AC_SUBST([HAVE_DECL_FREXPL]) HAVE_DECL_LDEXPL=1; AC_SUBST([HAVE_DECL_LDEXPL]) HAVE_DECL_LOGL=1; AC_SUBST([HAVE_DECL_LOGL]) HAVE_DECL_LOG10L=1; AC_SUBST([HAVE_DECL_LOG10L]) HAVE_DECL_LOG2=1; AC_SUBST([HAVE_DECL_LOG2]) HAVE_DECL_LOG2F=1; AC_SUBST([HAVE_DECL_LOG2F]) HAVE_DECL_LOG2L=1; AC_SUBST([HAVE_DECL_LOG2L]) HAVE_DECL_LOGB=1; AC_SUBST([HAVE_DECL_LOGB]) HAVE_DECL_REMAINDER=1; AC_SUBST([HAVE_DECL_REMAINDER]) HAVE_DECL_REMAINDERL=1; AC_SUBST([HAVE_DECL_REMAINDERL]) HAVE_DECL_RINTF=1; AC_SUBST([HAVE_DECL_RINTF]) HAVE_DECL_ROUND=1; AC_SUBST([HAVE_DECL_ROUND]) HAVE_DECL_ROUNDF=1; AC_SUBST([HAVE_DECL_ROUNDF]) HAVE_DECL_ROUNDL=1; AC_SUBST([HAVE_DECL_ROUNDL]) HAVE_DECL_SINL=1; AC_SUBST([HAVE_DECL_SINL]) HAVE_DECL_SQRTL=1; AC_SUBST([HAVE_DECL_SQRTL]) HAVE_DECL_TANL=1; AC_SUBST([HAVE_DECL_TANL]) HAVE_DECL_TRUNC=1; AC_SUBST([HAVE_DECL_TRUNC]) HAVE_DECL_TRUNCF=1; AC_SUBST([HAVE_DECL_TRUNCF]) HAVE_DECL_TRUNCL=1; AC_SUBST([HAVE_DECL_TRUNCL]) REPLACE_ACOSF=0; AC_SUBST([REPLACE_ACOSF]) REPLACE_ASINF=0; AC_SUBST([REPLACE_ASINF]) REPLACE_ATANF=0; AC_SUBST([REPLACE_ATANF]) REPLACE_ATAN2F=0; AC_SUBST([REPLACE_ATAN2F]) REPLACE_CBRTF=0; AC_SUBST([REPLACE_CBRTF]) REPLACE_CBRTL=0; AC_SUBST([REPLACE_CBRTL]) REPLACE_CEIL=0; AC_SUBST([REPLACE_CEIL]) REPLACE_CEILF=0; AC_SUBST([REPLACE_CEILF]) REPLACE_CEILL=0; AC_SUBST([REPLACE_CEILL]) REPLACE_COSF=0; AC_SUBST([REPLACE_COSF]) REPLACE_COSHF=0; AC_SUBST([REPLACE_COSHF]) REPLACE_EXPF=0; AC_SUBST([REPLACE_EXPF]) REPLACE_EXPL=0; AC_SUBST([REPLACE_EXPL]) REPLACE_EXPM1=0; AC_SUBST([REPLACE_EXPM1]) REPLACE_EXPM1F=0; AC_SUBST([REPLACE_EXPM1F]) REPLACE_EXPM1L=0; AC_SUBST([REPLACE_EXPM1L]) REPLACE_EXP2=0; AC_SUBST([REPLACE_EXP2]) REPLACE_EXP2L=0; AC_SUBST([REPLACE_EXP2L]) REPLACE_FABSL=0; AC_SUBST([REPLACE_FABSL]) REPLACE_FLOOR=0; AC_SUBST([REPLACE_FLOOR]) REPLACE_FLOORF=0; AC_SUBST([REPLACE_FLOORF]) REPLACE_FLOORL=0; AC_SUBST([REPLACE_FLOORL]) REPLACE_FMA=0; AC_SUBST([REPLACE_FMA]) REPLACE_FMAF=0; AC_SUBST([REPLACE_FMAF]) REPLACE_FMAL=0; AC_SUBST([REPLACE_FMAL]) REPLACE_FMOD=0; AC_SUBST([REPLACE_FMOD]) REPLACE_FMODF=0; AC_SUBST([REPLACE_FMODF]) REPLACE_FMODL=0; AC_SUBST([REPLACE_FMODL]) REPLACE_FREXPF=0; AC_SUBST([REPLACE_FREXPF]) REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP]) REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL]) REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL]) REPLACE_HYPOT=0; AC_SUBST([REPLACE_HYPOT]) REPLACE_HYPOTF=0; AC_SUBST([REPLACE_HYPOTF]) REPLACE_HYPOTL=0; AC_SUBST([REPLACE_HYPOTL]) REPLACE_ILOGB=0; AC_SUBST([REPLACE_ILOGB]) REPLACE_ILOGBF=0; AC_SUBST([REPLACE_ILOGBF]) REPLACE_ILOGBL=0; AC_SUBST([REPLACE_ILOGBL]) REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE]) REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF]) REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN]) REPLACE_LDEXPL=0; AC_SUBST([REPLACE_LDEXPL]) REPLACE_LOG=0; AC_SUBST([REPLACE_LOG]) REPLACE_LOGF=0; AC_SUBST([REPLACE_LOGF]) REPLACE_LOGL=0; AC_SUBST([REPLACE_LOGL]) REPLACE_LOG10=0; AC_SUBST([REPLACE_LOG10]) REPLACE_LOG10F=0; AC_SUBST([REPLACE_LOG10F]) REPLACE_LOG10L=0; AC_SUBST([REPLACE_LOG10L]) REPLACE_LOG1P=0; AC_SUBST([REPLACE_LOG1P]) REPLACE_LOG1PF=0; AC_SUBST([REPLACE_LOG1PF]) REPLACE_LOG1PL=0; AC_SUBST([REPLACE_LOG1PL]) REPLACE_LOG2=0; AC_SUBST([REPLACE_LOG2]) REPLACE_LOG2F=0; AC_SUBST([REPLACE_LOG2F]) REPLACE_LOG2L=0; AC_SUBST([REPLACE_LOG2L]) REPLACE_LOGB=0; AC_SUBST([REPLACE_LOGB]) REPLACE_LOGBF=0; AC_SUBST([REPLACE_LOGBF]) REPLACE_LOGBL=0; AC_SUBST([REPLACE_LOGBL]) REPLACE_MODF=0; AC_SUBST([REPLACE_MODF]) REPLACE_MODFF=0; AC_SUBST([REPLACE_MODFF]) REPLACE_MODFL=0; AC_SUBST([REPLACE_MODFL]) REPLACE_NAN=0; AC_SUBST([REPLACE_NAN]) REPLACE_REMAINDER=0; AC_SUBST([REPLACE_REMAINDER]) REPLACE_REMAINDERF=0; AC_SUBST([REPLACE_REMAINDERF]) REPLACE_REMAINDERL=0; AC_SUBST([REPLACE_REMAINDERL]) REPLACE_RINTL=0; AC_SUBST([REPLACE_RINTL]) REPLACE_ROUND=0; AC_SUBST([REPLACE_ROUND]) REPLACE_ROUNDF=0; AC_SUBST([REPLACE_ROUNDF]) REPLACE_ROUNDL=0; AC_SUBST([REPLACE_ROUNDL]) REPLACE_SIGNBIT=0; AC_SUBST([REPLACE_SIGNBIT]) REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC]) REPLACE_SINF=0; AC_SUBST([REPLACE_SINF]) REPLACE_SINHF=0; AC_SUBST([REPLACE_SINHF]) REPLACE_SQRTF=0; AC_SUBST([REPLACE_SQRTF]) REPLACE_SQRTL=0; AC_SUBST([REPLACE_SQRTL]) REPLACE_TANF=0; AC_SUBST([REPLACE_TANF]) REPLACE_TANHF=0; AC_SUBST([REPLACE_TANHF]) REPLACE_TRUNC=0; AC_SUBST([REPLACE_TRUNC]) REPLACE_TRUNCF=0; AC_SUBST([REPLACE_TRUNCF]) REPLACE_TRUNCL=0; AC_SUBST([REPLACE_TRUNCL]) ]) # gl_LONG_DOUBLE_VS_DOUBLE # determines whether 'long double' and 'double' have the same representation. # Sets variable HAVE_SAME_LONG_DOUBLE_AS_DOUBLE to 0 or 1, and defines # HAVE_SAME_LONG_DOUBLE_AS_DOUBLE accordingly. # The currently known platforms where this is the case are: # Linux/HPPA, Minix 3.1.8, AIX 5, AIX 6 and 7 with xlc, MSVC 9. AC_DEFUN([gl_LONG_DOUBLE_VS_DOUBLE], [ AC_CACHE_CHECK([whether long double and double are the same], [gl_cv_long_double_equals_double], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include ]], [[typedef int check[sizeof (long double) == sizeof (double) && LDBL_MANT_DIG == DBL_MANT_DIG && LDBL_MAX_EXP == DBL_MAX_EXP && LDBL_MIN_EXP == DBL_MIN_EXP ? 1 : -1]; ]])], [gl_cv_long_double_equals_double=yes], [gl_cv_long_double_equals_double=no]) ]) if test $gl_cv_long_double_equals_double = yes; then AC_DEFINE([HAVE_SAME_LONG_DOUBLE_AS_DOUBLE], [1], [Define to 1 if 'long double' and 'double' have the same representation.]) HAVE_SAME_LONG_DOUBLE_AS_DOUBLE=1 else HAVE_SAME_LONG_DOUBLE_AS_DOUBLE=0 fi AC_SUBST([HAVE_SAME_LONG_DOUBLE_AS_DOUBLE]) ]) # mbrtowc.m4 serial 37 -*- coding: utf-8 -*- dnl Copyright (C) 2001-2002, 2004-2005, 2008-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_MBRTOWC], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([gl_PTHREADLIB]) AC_CHECK_HEADERS_ONCE([threads.h]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) gl_MBSTATE_T_BROKEN AC_CHECK_FUNCS_ONCE([mbrtowc]) if test $ac_cv_func_mbrtowc = no; then HAVE_MBRTOWC=0 AC_CHECK_DECLS([mbrtowc],,, [[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]]) if test $ac_cv_have_decl_mbrtowc = yes; then dnl On Minix 3.1.8, the system's declares mbrtowc() although dnl it does not have the function. Avoid a collision with gnulib's dnl replacement. REPLACE_MBRTOWC=1 fi else if test $REPLACE_MBSTATE_T = 1; then REPLACE_MBRTOWC=1 else gl_MBRTOWC_NULL_ARG1 gl_MBRTOWC_NULL_ARG2 gl_MBRTOWC_RETVAL gl_MBRTOWC_NUL_RETVAL gl_MBRTOWC_STORES_INCOMPLETE gl_MBRTOWC_EMPTY_INPUT gl_MBRTOWC_C_LOCALE case "$gl_cv_func_mbrtowc_null_arg1" in *yes) ;; *) AC_DEFINE([MBRTOWC_NULL_ARG1_BUG], [1], [Define if the mbrtowc function has the NULL pwc argument bug.]) REPLACE_MBRTOWC=1 ;; esac case "$gl_cv_func_mbrtowc_null_arg2" in *yes) ;; *) AC_DEFINE([MBRTOWC_NULL_ARG2_BUG], [1], [Define if the mbrtowc function has the NULL string argument bug.]) REPLACE_MBRTOWC=1 ;; esac case "$gl_cv_func_mbrtowc_retval" in *yes) ;; *) AC_DEFINE([MBRTOWC_RETVAL_BUG], [1], [Define if the mbrtowc function returns a wrong return value.]) REPLACE_MBRTOWC=1 ;; esac case "$gl_cv_func_mbrtowc_nul_retval" in *yes) ;; *) AC_DEFINE([MBRTOWC_NUL_RETVAL_BUG], [1], [Define if the mbrtowc function does not return 0 for a NUL character.]) REPLACE_MBRTOWC=1 ;; esac case "$gl_cv_func_mbrtowc_stores_incomplete" in *no) ;; *) AC_DEFINE([MBRTOWC_STORES_INCOMPLETE_BUG], [1], [Define if the mbrtowc function stores a wide character when reporting incomplete input.]) REPLACE_MBRTOWC=1 ;; esac case "$gl_cv_func_mbrtowc_empty_input" in *yes) ;; *) AC_DEFINE([MBRTOWC_EMPTY_INPUT_BUG], [1], [Define if the mbrtowc function does not return (size_t) -2 for empty input.]) REPLACE_MBRTOWC=1 ;; esac case "$gl_cv_func_mbrtowc_C_locale_sans_EILSEQ" in *yes) ;; *) AC_DEFINE([MBRTOWC_IN_C_LOCALE_MAYBE_EILSEQ], [1], [Define if the mbrtowc function may signal encoding errors in the C locale.]) REPLACE_MBRTOWC=1 ;; esac fi fi if test $REPLACE_MBSTATE_T = 1; then case "$host_os" in mingw*) LIB_MBRTOWC= ;; *) gl_WEAK_SYMBOLS case "$gl_cv_have_weak" in *yes) LIB_MBRTOWC= ;; *) LIB_MBRTOWC="$LIBPTHREAD" ;; esac ;; esac else LIB_MBRTOWC= fi dnl LIB_MBRTOWC is expected to be '-pthread' or '-lpthread' on AIX dnl with gcc or xlc, and empty otherwise. AC_SUBST([LIB_MBRTOWC]) ]) dnl Test whether mbsinit() and mbrtowc() need to be overridden in a way that dnl redefines the semantics of the given mbstate_t type. dnl Result is REPLACE_MBSTATE_T. dnl When this is set to 1, we replace both mbsinit() and mbrtowc(), in order to dnl avoid inconsistencies. AC_DEFUN([gl_MBSTATE_T_BROKEN], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) AC_CHECK_FUNCS_ONCE([mbsinit]) AC_CHECK_FUNCS_ONCE([mbrtowc]) dnl On native Windows, we know exactly how mbsinit() behaves and don't need dnl to override it, even if - like on MSVC - mbsinit() is only defined as dnl an inline function, not as a global function. if case "$host_os" in mingw*) true ;; *) test $ac_cv_func_mbsinit = yes ;; esac \ && test $ac_cv_func_mbrtowc = yes; then gl_MBRTOWC_INCOMPLETE_STATE gl_MBRTOWC_SANITYCHECK REPLACE_MBSTATE_T=0 case "$gl_cv_func_mbrtowc_incomplete_state" in *yes) ;; *) REPLACE_MBSTATE_T=1 ;; esac case "$gl_cv_func_mbrtowc_sanitycheck" in *yes) ;; *) REPLACE_MBSTATE_T=1 ;; esac else REPLACE_MBSTATE_T=1 fi ]) dnl Test whether mbrtowc puts the state into non-initial state when parsing an dnl incomplete multibyte character. dnl Result is gl_cv_func_mbrtowc_incomplete_state. AC_DEFUN([gl_MBRTOWC_INCOMPLETE_STATE], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_JA]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbrtowc handles incomplete characters], [gl_cv_func_mbrtowc_incomplete_state], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on AIX and OSF/1. aix* | osf*) gl_cv_func_mbrtowc_incomplete_state="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_mbrtowc_incomplete_state="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_JA != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) { const char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) if (mbsinit (&state)) return 2; } return 0; }]])], [gl_cv_func_mbrtowc_incomplete_state=yes], [gl_cv_func_mbrtowc_incomplete_state=no], [:]) else if test $LOCALE_FR_UTF8 != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { const char input[] = "B\303\274\303\237er"; /* "Büßer" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) if (mbsinit (&state)) return 2; } return 0; }]])], [gl_cv_func_mbrtowc_incomplete_state=yes], [gl_cv_func_mbrtowc_incomplete_state=no], [:]) fi fi ]) ]) dnl Test whether mbrtowc works not worse than mbtowc. dnl Result is gl_cv_func_mbrtowc_sanitycheck. AC_DEFUN([gl_MBRTOWC_SANITYCHECK], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_ZH_CN]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbrtowc works as well as mbtowc], [gl_cv_func_mbrtowc_sanitycheck], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on Solaris 8. solaris2.8) gl_cv_func_mbrtowc_sanitycheck="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_mbrtowc_sanitycheck="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_ZH_CN != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { /* This fails on Solaris 8: mbrtowc returns 2, and sets wc to 0x00F0. mbtowc returns 4 (correct) and sets wc to 0x5EDC. */ if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) { char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 3, 6, &state) != 4 && mbtowc (&wc, input + 3, 6) == 4) return 2; } return 0; }]])], [gl_cv_func_mbrtowc_sanitycheck=yes], [gl_cv_func_mbrtowc_sanitycheck=no], [:]) fi ]) ]) dnl Test whether mbrtowc supports a NULL pwc argument correctly. dnl Result is gl_cv_func_mbrtowc_null_arg1. AC_DEFUN([gl_MBRTOWC_NULL_ARG1], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbrtowc handles a NULL pwc argument], [gl_cv_func_mbrtowc_null_arg1], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on Solaris. solaris*) gl_cv_func_mbrtowc_null_arg1="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_mbrtowc_null_arg1="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR_UTF8 != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { int result = 0; if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { char input[] = "\303\237er"; mbstate_t state; wchar_t wc; size_t ret; memset (&state, '\0', sizeof (mbstate_t)); wc = (wchar_t) 0xBADFACE; ret = mbrtowc (&wc, input, 5, &state); if (ret != 2) result |= 1; if (!mbsinit (&state)) result |= 2; memset (&state, '\0', sizeof (mbstate_t)); ret = mbrtowc (NULL, input, 5, &state); if (ret != 2) /* Solaris 7 fails here: ret is -1. */ result |= 4; if (!mbsinit (&state)) result |= 8; } return result; }]])], [gl_cv_func_mbrtowc_null_arg1=yes], [gl_cv_func_mbrtowc_null_arg1=no], [:]) fi ]) ]) dnl Test whether mbrtowc supports a NULL string argument correctly. dnl Result is gl_cv_func_mbrtowc_null_arg2. AC_DEFUN([gl_MBRTOWC_NULL_ARG2], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbrtowc handles a NULL string argument], [gl_cv_func_mbrtowc_null_arg2], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on OSF/1. osf*) gl_cv_func_mbrtowc_null_arg2="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_mbrtowc_null_arg2="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR_UTF8 != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { mbstate_t state; wchar_t wc; int ret; memset (&state, '\0', sizeof (mbstate_t)); wc = (wchar_t) 0xBADFACE; mbrtowc (&wc, NULL, 5, &state); /* Check that wc was not modified. */ if (wc != (wchar_t) 0xBADFACE) return 2; } return 0; }]])], [gl_cv_func_mbrtowc_null_arg2=yes], [gl_cv_func_mbrtowc_null_arg2=no], [:]) fi ]) ]) dnl Test whether mbrtowc, when parsing the end of a multibyte character, dnl correctly returns the number of bytes that were needed to complete the dnl character (not the total number of bytes of the multibyte character). dnl Result is gl_cv_func_mbrtowc_retval. AC_DEFUN([gl_MBRTOWC_RETVAL], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([gt_LOCALE_JA]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_CACHE_CHECK([whether mbrtowc has a correct return value], [gl_cv_func_mbrtowc_retval], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on HP-UX, Solaris, native Windows. hpux* | solaris* | mingw*) gl_cv_func_mbrtowc_retval="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_mbrtowc_retval="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none \ || { case "$host_os" in mingw*) true;; *) false;; esac; }; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { int result = 0; int found_some_locale = 0; /* This fails on Solaris. */ if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { char input[] = "B\303\274\303\237er"; /* "Büßer" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) { input[1] = '\0'; if (mbrtowc (&wc, input + 2, 5, &state) != 1) result |= 1; } found_some_locale = 1; } /* This fails on HP-UX 11.11. */ if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) { char input[] = "B\217\253\344\217\251\316er"; /* "Büßer" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 1, 1, &state) == (size_t)(-2)) { input[1] = '\0'; if (mbrtowc (&wc, input + 2, 5, &state) != 2) result |= 2; } found_some_locale = 1; } /* This fails on native Windows. */ if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL) { char input[] = "<\223\372\226\173\214\352>"; /* "<日本語>" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2)) { input[3] = '\0'; if (mbrtowc (&wc, input + 4, 4, &state) != 1) result |= 4; } found_some_locale = 1; } if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL) { char input[] = "<\244\351\245\273\273\171>"; /* "<日本語>" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2)) { input[3] = '\0'; if (mbrtowc (&wc, input + 4, 4, &state) != 1) result |= 8; } found_some_locale = 1; } if (setlocale (LC_ALL, "Chinese_China.936") != NULL) { char input[] = "<\310\325\261\276\325\132>"; /* "<日本語>" */ mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, input + 3, 1, &state) == (size_t)(-2)) { input[3] = '\0'; if (mbrtowc (&wc, input + 4, 4, &state) != 1) result |= 16; } found_some_locale = 1; } return (found_some_locale ? result : 77); }]])], [gl_cv_func_mbrtowc_retval=yes], [if test $? != 77; then gl_cv_func_mbrtowc_retval=no fi ], [:]) fi ]) ]) dnl Test whether mbrtowc, when parsing a NUL character, correctly returns 0. dnl Result is gl_cv_func_mbrtowc_nul_retval. AC_DEFUN([gl_MBRTOWC_NUL_RETVAL], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_ZH_CN]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbrtowc returns 0 when parsing a NUL character], [gl_cv_func_mbrtowc_nul_retval], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on Solaris 8 and 9. solaris2.[89]) gl_cv_func_mbrtowc_nul_retval="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_mbrtowc_nul_retval="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_ZH_CN != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { /* This fails on Solaris 8 and 9. */ if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) { mbstate_t state; wchar_t wc; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, "", 1, &state) != 0) return 2; } return 0; }]])], [gl_cv_func_mbrtowc_nul_retval=yes], [gl_cv_func_mbrtowc_nul_retval=no], [:]) fi ]) ]) dnl Test whether mbrtowc stores a wide character when reporting incomplete dnl input. AC_DEFUN([gl_MBRTOWC_STORES_INCOMPLETE], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbrtowc stores incomplete characters], [gl_cv_func_mbrtowc_stores_incomplete], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess yes on native Windows. mingw*) gl_cv_func_mbrtowc_stores_incomplete="guessing yes" ;; *) gl_cv_func_mbrtowc_stores_incomplete="guessing no" ;; esac changequote([,])dnl case "$host_os" in mingw*) AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { int result = 0; if (setlocale (LC_ALL, "French_France.65001") != NULL) { wchar_t wc = (wchar_t) 0xBADFACE; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2) && wc != (wchar_t) 0xBADFACE) result |= 1; } if (setlocale (LC_ALL, "Japanese_Japan.932") != NULL) { wchar_t wc = (wchar_t) 0xBADFACE; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, "\226", 1, &state) == (size_t)(-2) && wc != (wchar_t) 0xBADFACE) result |= 2; } if (setlocale (LC_ALL, "Chinese_Taiwan.950") != NULL) { wchar_t wc = (wchar_t) 0xBADFACE; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, "\245", 1, &state) == (size_t)(-2) && wc != (wchar_t) 0xBADFACE) result |= 4; } if (setlocale (LC_ALL, "Chinese_China.936") != NULL) { wchar_t wc = (wchar_t) 0xBADFACE; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, "\261", 1, &state) == (size_t)(-2) && wc != (wchar_t) 0xBADFACE) result |= 8; } return result; }]])], [gl_cv_func_mbrtowc_stores_incomplete=no], [gl_cv_func_mbrtowc_stores_incomplete=yes], [:]) ;; *) AC_REQUIRE([gt_LOCALE_FR_UTF8]) if test $LOCALE_FR_UTF8 != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { wchar_t wc = (wchar_t) 0xBADFACE; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (&wc, "\303", 1, &state) == (size_t)(-2) && wc != (wchar_t) 0xBADFACE) return 1; } return 0; }]])], [gl_cv_func_mbrtowc_stores_incomplete=no], [gl_cv_func_mbrtowc_stores_incomplete=yes], [:]) fi ;; esac ]) ]) dnl Test whether mbrtowc returns the correct value on empty input. AC_DEFUN([gl_MBRTOWC_EMPTY_INPUT], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbrtowc works on empty input], [gl_cv_func_mbrtowc_empty_input], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on AIX and glibc systems. aix* | *-gnu* | gnu*) gl_cv_func_mbrtowc_empty_input="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_mbrtowc_empty_input="guessing yes" ;; *) gl_cv_func_mbrtowc_empty_input="guessing yes" ;; esac changequote([,])dnl AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include static wchar_t wc; static mbstate_t mbs; int main (void) { return mbrtowc (&wc, "", 0, &mbs) != (size_t) -2; }]])], [gl_cv_func_mbrtowc_empty_input=yes], [gl_cv_func_mbrtowc_empty_input=no], [:]) ]) ]) dnl Test whether mbrtowc reports encoding errors in the C locale. dnl Although POSIX was never intended to allow this, the GNU C Library dnl and other implementations do it. See: dnl https://sourceware.org/bugzilla/show_bug.cgi?id=19932 AC_DEFUN([gl_MBRTOWC_C_LOCALE], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether the C locale is free of encoding errors], [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="$gl_cross_guess_normal" AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include #include #include ]], [[ int i; char *locale = setlocale (LC_ALL, "C"); if (! locale) return 2; for (i = CHAR_MIN; i <= CHAR_MAX; i++) { char c = i; wchar_t wc; mbstate_t mbs = { 0, }; size_t ss = mbrtowc (&wc, &c, 1, &mbs); if (1 < ss) return 3; } return 0; ]])], [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=yes], [gl_cv_func_mbrtowc_C_locale_sans_EILSEQ=no], [case "$host_os" in # Guess yes on native Windows. mingw*) gl_cv_func_mbrtowc_C_locale_sans_EILSEQ="guessing yes" ;; esac ]) ]) ]) # Prerequisites of lib/mbrtowc.c and lib/lc-charset-dispatch.c. AC_DEFUN([gl_PREREQ_MBRTOWC], [ AC_REQUIRE([AC_C_INLINE]) : ]) # Prerequisites of lib/mbtowc-lock.c. AC_DEFUN([gl_PREREQ_MBTOWC_LOCK], [ gl_VISIBILITY ]) dnl From Paul Eggert dnl This is an override of an autoconf macro. AC_DEFUN([AC_FUNC_MBRTOWC], [ dnl Same as AC_FUNC_MBRTOWC in autoconf-2.60. AC_CACHE_CHECK([whether mbrtowc and mbstate_t are properly declared], [gl_cv_func_mbrtowc], [AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[/* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]], [[wchar_t wc; char const s[] = ""; size_t n = 1; mbstate_t state; return ! (sizeof state && (mbrtowc) (&wc, s, n, &state));]])], [gl_cv_func_mbrtowc=yes], [gl_cv_func_mbrtowc=no])]) if test $gl_cv_func_mbrtowc = yes; then AC_DEFINE([HAVE_MBRTOWC], [1], [Define to 1 if mbrtowc and mbstate_t are properly declared.]) fi ]) # mbsinit.m4 serial 8 dnl Copyright (C) 2008, 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_MBSINIT], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) gl_MBSTATE_T_BROKEN AC_CHECK_FUNCS_ONCE([mbsinit]) if test $ac_cv_func_mbsinit = no; then HAVE_MBSINIT=0 AC_CHECK_DECLS([mbsinit],,, [[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]]) if test $ac_cv_have_decl_mbsinit = yes; then dnl On Minix 3.1.8, the system's declares mbsinit() although dnl it does not have the function. Avoid a collision with gnulib's dnl replacement. REPLACE_MBSINIT=1 fi else if test $REPLACE_MBSTATE_T = 1; then REPLACE_MBSINIT=1 else dnl On mingw, mbsinit() always returns 1, which is inappropriate for dnl states produced by mbrtowc() for an incomplete multibyte character dnl in multibyte locales. case "$host_os" in mingw*) REPLACE_MBSINIT=1 ;; esac fi fi ]) # Prerequisites of lib/mbsinit.c. AC_DEFUN([gl_PREREQ_MBSINIT], [ : ]) # mbsrtowcs.m4 serial 13 dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_MBSRTOWCS], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) gl_MBSTATE_T_BROKEN AC_CHECK_FUNCS_ONCE([mbsrtowcs]) if test $ac_cv_func_mbsrtowcs = no; then HAVE_MBSRTOWCS=0 AC_CHECK_DECLS([mbsrtowcs],,, [[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]]) if test $ac_cv_have_decl_mbsrtowcs = yes; then dnl On Minix 3.1.8, the system's declares mbsrtowcs() although dnl it does not have the function. Avoid a collision with gnulib's dnl replacement. REPLACE_MBSRTOWCS=1 fi else if test $REPLACE_MBSTATE_T = 1; then REPLACE_MBSRTOWCS=1 else gl_MBSRTOWCS_WORKS case "$gl_cv_func_mbsrtowcs_works" in *yes) ;; *) REPLACE_MBSRTOWCS=1 ;; esac fi fi ]) dnl Test whether mbsrtowcs works. dnl Result is gl_cv_func_mbsrtowcs_works. AC_DEFUN([gl_MBSRTOWCS_WORKS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([gt_LOCALE_JA]) AC_REQUIRE([gt_LOCALE_ZH_CN]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether mbsrtowcs works], [gl_cv_func_mbsrtowcs_works], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on HP-UX, Solaris, mingw. hpux* | solaris* | mingw*) gl_cv_func_mbsrtowcs_works="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_mbsrtowcs_works="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int main () { int result = 0; /* Test whether the function supports a NULL destination argument. This fails on native Windows. */ if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) { const char input[] = "\337er"; const char *src = input; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbsrtowcs (NULL, &src, 1, &state) != 3 || src != input) result |= 1; } /* Test whether the function works when started with a conversion state in non-initial state. This fails on HP-UX 11.11 and Solaris 10. */ if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { const char input[] = "B\303\274\303\237er"; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2)) if (!mbsinit (&state)) { const char *src = input + 2; if (mbsrtowcs (NULL, &src, 10, &state) != 4) result |= 2; } } if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) { const char input[] = "<\306\374\313\334\270\354>"; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (NULL, input + 3, 1, &state) == (size_t)(-2)) if (!mbsinit (&state)) { const char *src = input + 4; if (mbsrtowcs (NULL, &src, 10, &state) != 3) result |= 4; } } if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) { const char input[] = "B\250\271\201\060\211\070er"; mbstate_t state; memset (&state, '\0', sizeof (mbstate_t)); if (mbrtowc (NULL, input + 1, 1, &state) == (size_t)(-2)) if (!mbsinit (&state)) { const char *src = input + 2; if (mbsrtowcs (NULL, &src, 10, &state) != 4) result |= 8; } } return result; }]])], [gl_cv_func_mbsrtowcs_works=yes], [gl_cv_func_mbsrtowcs_works=no], [:]) fi ]) ]) # Prerequisites of lib/mbsrtowcs.c. AC_DEFUN([gl_PREREQ_MBSRTOWCS], [ : ]) # mbstate_t.m4 serial 13 dnl Copyright (C) 2000-2002, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # From Paul Eggert. # BeOS 5 has but does not define mbstate_t, # so you can't declare an object of that type. # Check for this incompatibility with Standard C. # AC_TYPE_MBSTATE_T # ----------------- AC_DEFUN([AC_TYPE_MBSTATE_T], [ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11 AC_CACHE_CHECK([for mbstate_t], [ac_cv_type_mbstate_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [AC_INCLUDES_DEFAULT[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]], [[mbstate_t x; return sizeof x;]])], [ac_cv_type_mbstate_t=yes], [ac_cv_type_mbstate_t=no])]) if test $ac_cv_type_mbstate_t = yes; then AC_DEFINE([HAVE_MBSTATE_T], [1], [Define to 1 if declares mbstate_t.]) else AC_DEFINE([mbstate_t], [int], [Define to a type if does not define.]) fi ]) # mbtowc.m4 serial 3 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_MBTOWC], [ AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) AC_CHECK_FUNCS([mbtowc]) if test $ac_cv_func_mbtowc = no; then HAVE_MBTOWC=0 else if false; then REPLACE_MBTOWC=1 fi fi ]) # Prerequisites of lib/mbtowc.c. AC_DEFUN([gl_PREREQ_MBTOWC], [ : ]) # memchr.m4 serial 15 dnl Copyright (C) 2002-2004, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN_ONCE([gl_FUNC_MEMCHR], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl Check for prerequisites for memory fence checks. gl_FUNC_MMAP_ANON AC_CHECK_HEADERS_ONCE([sys/mman.h]) AC_CHECK_FUNCS_ONCE([mprotect]) AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) m4_ifdef([gl_FUNC_MEMCHR_OBSOLETE], [ dnl These days, we assume memchr is present. But if support for old dnl platforms is desired: AC_CHECK_FUNCS_ONCE([memchr]) if test $ac_cv_func_memchr = no; then HAVE_MEMCHR=0 fi ]) if test $HAVE_MEMCHR = 1; then # Detect platform-specific bugs in some versions of glibc: # memchr should not dereference anything with length 0 # https://bugzilla.redhat.com/show_bug.cgi?id=499689 # memchr should not dereference overestimated length after a match # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=521737 # https://sourceware.org/bugzilla/show_bug.cgi?id=10162 # memchr should cast the second argument to 'unsigned char'. # This bug exists in Android 4.3. # Assume that memchr works on platforms that lack mprotect. AC_CACHE_CHECK([whether memchr works], [gl_cv_func_memchr_works], [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include #if HAVE_SYS_MMAN_H # include # include # include # include # ifndef MAP_FILE # define MAP_FILE 0 # endif #endif ]], [[ int result = 0; char *fence = NULL; #if HAVE_SYS_MMAN_H && HAVE_MPROTECT # if HAVE_MAP_ANONYMOUS const int flags = MAP_ANONYMOUS | MAP_PRIVATE; const int fd = -1; # else /* !HAVE_MAP_ANONYMOUS */ const int flags = MAP_FILE | MAP_PRIVATE; int fd = open ("/dev/zero", O_RDONLY, 0666); if (fd >= 0) # endif { int pagesize = getpagesize (); char *two_pages = (char *) mmap (NULL, 2 * pagesize, PROT_READ | PROT_WRITE, flags, fd, 0); if (two_pages != (char *)(-1) && mprotect (two_pages + pagesize, pagesize, PROT_NONE) == 0) fence = two_pages + pagesize; } #endif if (fence) { if (memchr (fence, 0, 0)) result |= 1; strcpy (fence - 9, "12345678"); if (memchr (fence - 9, 0, 79) != fence - 1) result |= 2; if (memchr (fence - 1, 0, 3) != fence - 1) result |= 4; } /* Test against bug on Android 4.3. */ { char input[3]; input[0] = 'a'; input[1] = 'b'; input[2] = 'c'; if (memchr (input, 0x789abc00 | 'b', 3) != input + 1) result |= 8; } return result; ]])], [gl_cv_func_memchr_works=yes], [gl_cv_func_memchr_works=no], [case "$host_os" in # Guess no on Android. linux*-android*) gl_cv_func_memchr_works="guessing no" ;; # Guess yes on native Windows. mingw*) gl_cv_func_memchr_works="guessing yes" ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_memchr_works="$gl_cross_guess_normal" ;; esac ]) ]) case "$gl_cv_func_memchr_works" in *yes) ;; *) REPLACE_MEMCHR=1 ;; esac fi ]) # Prerequisites of lib/memchr.c. AC_DEFUN([gl_PREREQ_MEMCHR], [ AC_CHECK_HEADERS([bp-sym.h]) ]) # mempcpy.m4 serial 11 dnl Copyright (C) 2003-2004, 2006-2007, 2009-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_MEMPCPY], [ dnl Persuade glibc to declare mempcpy(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl The mempcpy() declaration in lib/string.in.h uses 'restrict'. AC_REQUIRE([AC_C_RESTRICT]) AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) AC_CHECK_FUNCS([mempcpy]) if test $ac_cv_func_mempcpy = no; then HAVE_MEMPCPY=0 fi ]) # Prerequisites of lib/mempcpy.c. AC_DEFUN([gl_PREREQ_MEMPCPY], [ : ]) # mmap-anon.m4 serial 10 dnl Copyright (C) 2005, 2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Detect how mmap can be used to create anonymous (not file-backed) memory # mappings. # - On Linux, AIX, OSF/1, Solaris, Cygwin, Interix, Haiku, both MAP_ANONYMOUS # and MAP_ANON exist and have the same value. # - On HP-UX, only MAP_ANONYMOUS exists. # - On Mac OS X, FreeBSD, NetBSD, OpenBSD, only MAP_ANON exists. # - On IRIX, neither exists, and a file descriptor opened to /dev/zero must be # used. AC_DEFUN([gl_FUNC_MMAP_ANON], [ dnl Persuade glibc to define MAP_ANONYMOUS. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) # Check for mmap(). Don't use AC_FUNC_MMAP, because it checks too much: it # fails on HP-UX 11, because MAP_FIXED mappings do not work. But this is # irrelevant for anonymous mappings. AC_CHECK_FUNC([mmap], [gl_have_mmap=yes], [gl_have_mmap=no]) # Try to allow MAP_ANONYMOUS. gl_have_mmap_anonymous=no if test $gl_have_mmap = yes; then AC_MSG_CHECKING([for MAP_ANONYMOUS]) AC_EGREP_CPP([I cannot identify this map], [ #include #ifdef MAP_ANONYMOUS I cannot identify this map #endif ], [gl_have_mmap_anonymous=yes]) if test $gl_have_mmap_anonymous != yes; then AC_EGREP_CPP([I cannot identify this map], [ #include #ifdef MAP_ANON I cannot identify this map #endif ], [AC_DEFINE([MAP_ANONYMOUS], [MAP_ANON], [Define to a substitute value for mmap()'s MAP_ANONYMOUS flag.]) gl_have_mmap_anonymous=yes]) fi AC_MSG_RESULT([$gl_have_mmap_anonymous]) if test $gl_have_mmap_anonymous = yes; then AC_DEFINE([HAVE_MAP_ANONYMOUS], [1], [Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including config.h and .]) fi fi ]) # msvc-inval.m4 serial 1 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_MSVC_INVAL], [ AC_CHECK_FUNCS_ONCE([_set_invalid_parameter_handler]) if test $ac_cv_func__set_invalid_parameter_handler = yes; then HAVE_MSVC_INVALID_PARAMETER_HANDLER=1 AC_DEFINE([HAVE_MSVC_INVALID_PARAMETER_HANDLER], [1], [Define to 1 on MSVC platforms that have the "invalid parameter handler" concept.]) else HAVE_MSVC_INVALID_PARAMETER_HANDLER=0 fi AC_SUBST([HAVE_MSVC_INVALID_PARAMETER_HANDLER]) ]) # msvc-nothrow.m4 serial 1 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_MSVC_NOTHROW], [ AC_REQUIRE([gl_MSVC_INVAL]) ]) # multiarch.m4 serial 7 dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Determine whether the compiler is or may be producing universal binaries. # # On Mac OS X 10.5 and later systems, the user can create libraries and # executables that work on multiple system types--known as "fat" or # "universal" binaries--by specifying multiple '-arch' options to the # compiler but only a single '-arch' option to the preprocessor. Like # this: # # ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ # CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ # CPP="gcc -E" CXXCPP="g++ -E" # # Detect this situation and set APPLE_UNIVERSAL_BUILD accordingly. AC_DEFUN_ONCE([gl_MULTIARCH], [ dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN. gl_cv_c_multiarch=no AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#ifndef __APPLE_CC__ not a universal capable compiler #endif typedef int dummy; ]])], [ dnl Check for potential -arch flags. It is not universal unless dnl there are at least two -arch flags with different values. arch= prev= for word in ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS}; do if test -n "$prev"; then case $word in i?86 | x86_64 | ppc | ppc64) if test -z "$arch" || test "$arch" = "$word"; then arch="$word" else gl_cv_c_multiarch=yes fi ;; esac prev= else if test "x$word" = "x-arch"; then prev=arch fi fi done ]) if test $gl_cv_c_multiarch = yes; then APPLE_UNIVERSAL_BUILD=1 else APPLE_UNIVERSAL_BUILD=0 fi AC_SUBST([APPLE_UNIVERSAL_BUILD]) ]) # nl_langinfo.m4 serial 7 dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_NL_LANGINFO], [ AC_REQUIRE([gl_LANGINFO_H_DEFAULTS]) AC_REQUIRE([gl_LANGINFO_H]) AC_CHECK_FUNCS_ONCE([nl_langinfo]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_FUNC_SETLOCALE_NULL]) if test $ac_cv_func_nl_langinfo = yes; then # On Irix 6.5, YESEXPR is defined, but nl_langinfo(YESEXPR) is broken. AC_CACHE_CHECK([whether YESEXPR works], [gl_cv_func_nl_langinfo_yesexpr_works], [AC_RUN_IFELSE( [AC_LANG_PROGRAM([[#include ]], [[return !*nl_langinfo(YESEXPR); ]])], [gl_cv_func_nl_langinfo_yesexpr_works=yes], [gl_cv_func_nl_langinfo_yesexpr_works=no], [ case "$host_os" in # Guess no on irix systems. irix*) gl_cv_func_nl_langinfo_yesexpr_works="guessing no";; # Guess yes elsewhere. *) gl_cv_func_nl_langinfo_yesexpr_works="guessing yes";; esac ]) ]) case $gl_cv_func_nl_langinfo_yesexpr_works in *yes) FUNC_NL_LANGINFO_YESEXPR_WORKS=1 ;; *) FUNC_NL_LANGINFO_YESEXPR_WORKS=0 ;; esac AC_DEFINE_UNQUOTED([FUNC_NL_LANGINFO_YESEXPR_WORKS], [$FUNC_NL_LANGINFO_YESEXPR_WORKS], [Define to 1 if nl_langinfo (YESEXPR) returns a non-empty string.]) if test $HAVE_LANGINFO_CODESET = 1 \ && test $HAVE_LANGINFO_T_FMT_AMPM = 1 \ && test $HAVE_LANGINFO_ALTMON = 1 \ && test $HAVE_LANGINFO_ERA = 1 \ && test $FUNC_NL_LANGINFO_YESEXPR_WORKS = 1; then : else REPLACE_NL_LANGINFO=1 AC_DEFINE([REPLACE_NL_LANGINFO], [1], [Define if nl_langinfo exists but is overridden by gnulib.]) fi else HAVE_NL_LANGINFO=0 fi if test $HAVE_NL_LANGINFO = 0 || test $HAVE_LANGINFO_CODESET = 0; then LIB_NL_LANGINFO="$LIB_SETLOCALE_NULL" else LIB_NL_LANGINFO= fi dnl LIB_NL_LANGINFO is expected to be empty everywhere. AC_SUBST([LIB_NL_LANGINFO]) ]) # nocrash.m4 serial 5 dnl Copyright (C) 2005, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Based on libsigsegv, from Bruno Haible and Paolo Bonzini. AC_PREREQ([2.13]) dnl Expands to some code for use in .c programs that will cause the configure dnl test to exit instead of crashing. This is useful to avoid triggering dnl action from a background debugger and to avoid core dumps. dnl Usage: ... dnl ]GL_NOCRASH[ dnl ... dnl int main() { nocrash_init(); ... } AC_DEFUN([GL_NOCRASH],[[ #include #if defined __MACH__ && defined __APPLE__ /* Avoid a crash on Mac OS X. */ #include #include #include #include #include #include /* The exception port on which our thread listens. */ static mach_port_t our_exception_port; /* The main function of the thread listening for exceptions of type EXC_BAD_ACCESS. */ static void * mach_exception_thread (void *arg) { /* Buffer for a message to be received. */ struct { mach_msg_header_t head; mach_msg_body_t msgh_body; char data[1024]; } msg; mach_msg_return_t retval; /* Wait for a message on the exception port. */ retval = mach_msg (&msg.head, MACH_RCV_MSG | MACH_RCV_LARGE, 0, sizeof (msg), our_exception_port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); if (retval != MACH_MSG_SUCCESS) abort (); exit (1); } static void nocrash_init (void) { mach_port_t self = mach_task_self (); /* Allocate a port on which the thread shall listen for exceptions. */ if (mach_port_allocate (self, MACH_PORT_RIGHT_RECEIVE, &our_exception_port) == KERN_SUCCESS) { /* See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/mach_port_insert_right.html. */ if (mach_port_insert_right (self, our_exception_port, our_exception_port, MACH_MSG_TYPE_MAKE_SEND) == KERN_SUCCESS) { /* The exceptions we want to catch. Only EXC_BAD_ACCESS is interesting for us. */ exception_mask_t mask = EXC_MASK_BAD_ACCESS; /* Create the thread listening on the exception port. */ pthread_attr_t attr; pthread_t thread; if (pthread_attr_init (&attr) == 0 && pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED) == 0 && pthread_create (&thread, &attr, mach_exception_thread, NULL) == 0) { pthread_attr_destroy (&attr); /* Replace the exception port info for these exceptions with our own. Note that we replace the exception port for the entire task, not only for a particular thread. This has the effect that when our exception port gets the message, the thread specific exception port has already been asked, and we don't need to bother about it. See https://web.mit.edu/darwin/src/modules/xnu/osfmk/man/task_set_exception_ports.html. */ task_set_exception_ports (self, mask, our_exception_port, EXCEPTION_DEFAULT, MACHINE_THREAD_STATE); } } } } #elif defined _WIN32 && ! defined __CYGWIN__ /* Avoid a crash on native Windows. */ #define WIN32_LEAN_AND_MEAN #include #include static LONG WINAPI exception_filter (EXCEPTION_POINTERS *ExceptionInfo) { switch (ExceptionInfo->ExceptionRecord->ExceptionCode) { case EXCEPTION_ACCESS_VIOLATION: case EXCEPTION_IN_PAGE_ERROR: case EXCEPTION_STACK_OVERFLOW: case EXCEPTION_GUARD_PAGE: case EXCEPTION_PRIV_INSTRUCTION: case EXCEPTION_ILLEGAL_INSTRUCTION: case EXCEPTION_DATATYPE_MISALIGNMENT: case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: case EXCEPTION_NONCONTINUABLE_EXCEPTION: exit (1); } return EXCEPTION_CONTINUE_SEARCH; } static void nocrash_init (void) { SetUnhandledExceptionFilter ((LPTOP_LEVEL_EXCEPTION_FILTER) exception_filter); } #else /* Avoid a crash on POSIX systems. */ #include #include /* A POSIX signal handler. */ static void exception_handler (int sig) { _exit (1); } static void nocrash_init (void) { #ifdef SIGSEGV signal (SIGSEGV, exception_handler); #endif #ifdef SIGBUS signal (SIGBUS, exception_handler); #endif } #endif ]]) # off_t.m4 serial 1 dnl Copyright (C) 2012-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Check whether to override the 'off_t' type. dnl Set WINDOWS_64_BIT_OFF_T. AC_DEFUN([gl_TYPE_OFF_T], [ m4_ifdef([gl_LARGEFILE], [ AC_REQUIRE([gl_LARGEFILE]) ], [ WINDOWS_64_BIT_OFF_T=0 ]) AC_SUBST([WINDOWS_64_BIT_OFF_T]) ]) # opendir.m4 serial 5 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_OPENDIR], [ AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_FUNCS([opendir]) if test $ac_cv_func_opendir = no; then HAVE_OPENDIR=0 fi dnl Replace opendir() for supporting the gnulib-defined fchdir() function, dnl to keep fchdir's bookkeeping up-to-date. m4_ifdef([gl_FUNC_FCHDIR], [ gl_TEST_FCHDIR if test $HAVE_FCHDIR = 0; then if test $HAVE_OPENDIR = 1; then REPLACE_OPENDIR=1 fi fi ]) dnl Replace opendir() on OS/2 kLIBC to support dirfd() function replaced dnl by gnulib. case $host_os,$HAVE_OPENDIR in os2*,1) REPLACE_OPENDIR=1;; esac ]) # pathmax.m4 serial 11 dnl Copyright (C) 2002-2003, 2005-2006, 2009-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_PATHMAX], [ dnl Prerequisites of lib/pathmax.h. AC_CHECK_HEADERS_ONCE([sys/param.h]) ]) # Expands to a piece of C program that defines PATH_MAX in the same way as # "pathmax.h" will do. AC_DEFUN([gl_PATHMAX_SNIPPET], [[ /* Arrange to define PATH_MAX, like "pathmax.h" does. */ #if HAVE_UNISTD_H # include #endif #include #if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN # include #endif #if !defined PATH_MAX && defined MAXPATHLEN # define PATH_MAX MAXPATHLEN #endif #ifdef __hpux # undef PATH_MAX # define PATH_MAX 1024 #endif #if defined _WIN32 && ! defined __CYGWIN__ # undef PATH_MAX # define PATH_MAX 260 #endif ]]) # Prerequisites of gl_PATHMAX_SNIPPET. AC_DEFUN([gl_PATHMAX_SNIPPET_PREREQ], [ AC_CHECK_HEADERS_ONCE([unistd.h sys/param.h]) ]) # printf-frexp.m4 serial 5 dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Check how to define printf_frexp() without linking with libm. AC_DEFUN([gl_FUNC_PRINTF_FREXP], [ AC_REQUIRE([gl_CHECK_FREXP_NO_LIBM]) if test $gl_cv_func_frexp_no_libm = yes; then gl_FUNC_FREXP_WORKS case "$gl_cv_func_frexp_works" in *yes) AC_DEFINE([HAVE_FREXP_IN_LIBC], [1], [Define if the frexp function is available in libc.]) ;; esac fi AC_CACHE_CHECK([whether ldexp can be used without linking with libm], [gl_cv_func_ldexp_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include double x; int y;]], [[return ldexp (x, y) < 1;]])], [gl_cv_func_ldexp_no_libm=yes], [gl_cv_func_ldexp_no_libm=no]) ]) if test $gl_cv_func_ldexp_no_libm = yes; then AC_DEFINE([HAVE_LDEXP_IN_LIBC], [1], [Define if the ldexp function is available in libc.]) fi ]) # printf-frexpl.m4 serial 10 dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Check how to define printf_frexpl() without linking with libm. AC_DEFUN([gl_FUNC_PRINTF_FREXPL], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) dnl Subset of gl_FUNC_FREXPL_NO_LIBM. gl_CHECK_FREXPL_NO_LIBM if test $gl_cv_func_frexpl_no_libm = yes; then gl_FUNC_FREXPL_WORKS case "$gl_cv_func_frexpl_works" in *yes) gl_func_frexpl_no_libm=yes ;; *) gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;; esac else gl_func_frexpl_no_libm=no dnl Set REPLACE_FREXPL here because the system may have frexpl in libm. REPLACE_FREXPL=1 fi if test $gl_func_frexpl_no_libm = yes; then AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1], [Define if the frexpl function is available in libc.]) dnl Also check whether it's declared. dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in . AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include ]]) fi gl_CHECK_LDEXPL_NO_LIBM if test $gl_cv_func_ldexpl_no_libm = yes; then gl_FUNC_LDEXPL_WORKS case "$gl_cv_func_ldexpl_works" in *yes) AC_DEFINE([HAVE_LDEXPL_IN_LIBC], [1], [Define if the ldexpl function is available in libc.]) dnl Also check whether it's declared. dnl Mac OS X 10.3 has ldexpl() in libc but doesn't declare it in . AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [[#include ]]) ;; esac fi ]) # printf.m4 serial 64 dnl Copyright (C) 2003, 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Test whether the *printf family of functions supports the 'j', 'z', 't', dnl 'L' size specifiers. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_printf_sizes_c99. AC_DEFUN([gl_PRINTF_SIZES_C99], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gl_AC_HEADER_STDINT_H]) AC_REQUIRE([gl_AC_HEADER_INTTYPES_H]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports size specifiers as in C99], [gl_cv_func_printf_sizes_c99], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #include #if HAVE_STDINT_H_WITH_UINTMAX # include #endif #if HAVE_INTTYPES_H_WITH_UINTMAX # include #endif static char buf[100]; int main () { int result = 0; #if HAVE_STDINT_H_WITH_UINTMAX || HAVE_INTTYPES_H_WITH_UINTMAX buf[0] = '\0'; if (sprintf (buf, "%ju %d", (uintmax_t) 12345671, 33, 44, 55) < 0 || strcmp (buf, "12345671 33") != 0) result |= 1; #else result |= 1; #endif buf[0] = '\0'; if (sprintf (buf, "%zu %d", (size_t) 12345672, 33, 44, 55) < 0 || strcmp (buf, "12345672 33") != 0) result |= 2; buf[0] = '\0'; if (sprintf (buf, "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55) < 0 || strcmp (buf, "12345673 33") != 0) result |= 4; buf[0] = '\0'; if (sprintf (buf, "%Lg %d", (long double) 1.5, 33, 44, 55) < 0 || strcmp (buf, "1.5 33") != 0) result |= 8; return result; }]])], [gl_cv_func_printf_sizes_c99=yes], [gl_cv_func_printf_sizes_c99=no], [ case "$host_os" in changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_sizes_c99="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_printf_sizes_c99="guessing yes";; # Guess yes on FreeBSD >= 5. freebsd[1-4].*) gl_cv_func_printf_sizes_c99="guessing no";; freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_printf_sizes_c99="guessing no";; darwin*) gl_cv_func_printf_sizes_c99="guessing yes";; # Guess yes on OpenBSD >= 3.9. openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) gl_cv_func_printf_sizes_c99="guessing no";; openbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; # Guess yes on Solaris >= 2.10. solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; solaris*) gl_cv_func_printf_sizes_c99="guessing no";; # Guess yes on NetBSD >= 3. netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) gl_cv_func_printf_sizes_c99="guessing no";; netbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; # Guess yes on Android. linux*-android*) gl_cv_func_printf_sizes_c99="guessing yes";; changequote([,])dnl # Guess yes on MSVC, no on mingw. mingw*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif ], [gl_cv_func_printf_sizes_c99="guessing yes"], [gl_cv_func_printf_sizes_c99="guessing no"]) ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_sizes_c99="$gl_cross_guess_normal";; esac ]) ]) ]) dnl Test whether the *printf family of functions supports 'long double' dnl arguments together with the 'L' size specifier. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_printf_long_double. AC_DEFUN([gl_PRINTF_LONG_DOUBLE], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports 'long double' arguments], [gl_cv_func_printf_long_double], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static char buf[10000]; int main () { int result = 0; buf[0] = '\0'; if (sprintf (buf, "%Lf %d", 1.75L, 33, 44, 55) < 0 || strcmp (buf, "1.750000 33") != 0) result |= 1; buf[0] = '\0'; if (sprintf (buf, "%Le %d", 1.75L, 33, 44, 55) < 0 || strcmp (buf, "1.750000e+00 33") != 0) result |= 2; buf[0] = '\0'; if (sprintf (buf, "%Lg %d", 1.75L, 33, 44, 55) < 0 || strcmp (buf, "1.75 33") != 0) result |= 4; return result; }]])], [gl_cv_func_printf_long_double=yes], [gl_cv_func_printf_long_double=no], [case "$host_os" in # Guess no on BeOS. beos*) gl_cv_func_printf_long_double="guessing no";; # Guess yes on Android. linux*-android*) gl_cv_func_printf_long_double="guessing yes";; # Guess yes on MSVC, no on mingw. mingw*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif ], [gl_cv_func_printf_long_double="guessing yes"], [gl_cv_func_printf_long_double="guessing no"]) ;; *) gl_cv_func_printf_long_double="guessing yes";; esac ]) ]) ]) dnl Test whether the *printf family of functions supports infinite and NaN dnl 'double' arguments and negative zero arguments in the %f, %e, %g dnl directives. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_printf_infinite. AC_DEFUN([gl_PRINTF_INFINITE], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports infinite 'double' arguments], [gl_cv_func_printf_infinite], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static int strisnan (const char *string, size_t start_index, size_t end_index) { if (start_index < end_index) { if (string[start_index] == '-') start_index++; if (start_index + 3 <= end_index && memcmp (string + start_index, "nan", 3) == 0) { start_index += 3; if (start_index == end_index || (string[start_index] == '(' && string[end_index - 1] == ')')) return 1; } } return 0; } static int have_minus_zero () { static double plus_zero = 0.0; double minus_zero = - plus_zero; return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0; } static char buf[10000]; static double zero = 0.0; int main () { int result = 0; if (sprintf (buf, "%f", 1.0 / zero) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 1; if (sprintf (buf, "%f", -1.0 / zero) < 0 || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) result |= 1; if (sprintf (buf, "%f", zero / zero) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 2; if (sprintf (buf, "%e", 1.0 / zero) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 4; if (sprintf (buf, "%e", -1.0 / zero) < 0 || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) result |= 4; if (sprintf (buf, "%e", zero / zero) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 8; if (sprintf (buf, "%g", 1.0 / zero) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 16; if (sprintf (buf, "%g", -1.0 / zero) < 0 || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) result |= 16; if (sprintf (buf, "%g", zero / zero) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 32; /* This test fails on HP-UX 10.20. */ if (have_minus_zero ()) if (sprintf (buf, "%g", - zero) < 0 || strcmp (buf, "-0") != 0) result |= 64; return result; }]])], [gl_cv_func_printf_infinite=yes], [gl_cv_func_printf_infinite=no], [ case "$host_os" in changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_infinite="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_printf_infinite="guessing yes";; # Guess yes on FreeBSD >= 6. freebsd[1-5].*) gl_cv_func_printf_infinite="guessing no";; freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_printf_infinite="guessing no";; darwin*) gl_cv_func_printf_infinite="guessing yes";; # Guess yes on HP-UX >= 11. hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite="guessing no";; hpux*) gl_cv_func_printf_infinite="guessing yes";; # Guess yes on NetBSD >= 3. netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) gl_cv_func_printf_infinite="guessing no";; netbsd*) gl_cv_func_printf_infinite="guessing yes";; # Guess yes on BeOS. beos*) gl_cv_func_printf_infinite="guessing yes";; # Guess no on Android. linux*-android*) gl_cv_func_printf_infinite="guessing no";; changequote([,])dnl # Guess yes on MSVC, no on mingw. mingw*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif ], [gl_cv_func_printf_infinite="guessing yes"], [gl_cv_func_printf_infinite="guessing no"]) ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_infinite="$gl_cross_guess_normal";; esac ]) ]) ]) dnl Test whether the *printf family of functions supports infinite and NaN dnl 'long double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_printf_infinite_long_double. AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE], [ AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gl_BIGENDIAN]) AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl The user can set or unset the variable gl_printf_safe to indicate dnl that he wishes a safe handling of non-IEEE-754 'long double' values. if test -n "$gl_printf_safe"; then AC_DEFINE([CHECK_PRINTF_SAFE], [1], [Define if you wish *printf() functions that have a safe handling of non-IEEE-754 'long double' values.]) fi case "$gl_cv_func_printf_long_double" in *yes) AC_CACHE_CHECK([whether printf supports infinite 'long double' arguments], [gl_cv_func_printf_infinite_long_double], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ ]GL_NOCRASH[ #include #include #include static int strisnan (const char *string, size_t start_index, size_t end_index) { if (start_index < end_index) { if (string[start_index] == '-') start_index++; if (start_index + 3 <= end_index && memcmp (string + start_index, "nan", 3) == 0) { start_index += 3; if (start_index == end_index || (string[start_index] == '(' && string[end_index - 1] == ')')) return 1; } } return 0; } static char buf[10000]; static long double zeroL = 0.0L; int main () { int result = 0; nocrash_init(); if (sprintf (buf, "%Lf", 1.0L / zeroL) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 1; if (sprintf (buf, "%Lf", -1.0L / zeroL) < 0 || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) result |= 1; if (sprintf (buf, "%Lf", zeroL / zeroL) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 1; if (sprintf (buf, "%Le", 1.0L / zeroL) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 1; if (sprintf (buf, "%Le", -1.0L / zeroL) < 0 || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) result |= 1; if (sprintf (buf, "%Le", zeroL / zeroL) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 1; if (sprintf (buf, "%Lg", 1.0L / zeroL) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 1; if (sprintf (buf, "%Lg", -1.0L / zeroL) < 0 || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) result |= 1; if (sprintf (buf, "%Lg", zeroL / zeroL) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 1; #if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE /* Representation of an 80-bit 'long double' as an initializer for a sequence of 'unsigned int' words. */ # ifdef WORDS_BIGENDIAN # define LDBL80_WORDS(exponent,manthi,mantlo) \ { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \ ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16), \ (unsigned int) (mantlo) << 16 \ } # else # define LDBL80_WORDS(exponent,manthi,mantlo) \ { mantlo, manthi, exponent } # endif { /* Quiet NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; if (sprintf (buf, "%Lf", x.value) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 2; if (sprintf (buf, "%Le", x.value) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 2; if (sprintf (buf, "%Lg", x.value) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 2; } { /* Signalling NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; if (sprintf (buf, "%Lf", x.value) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 2; if (sprintf (buf, "%Le", x.value) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 2; if (sprintf (buf, "%Lg", x.value) < 0 || !strisnan (buf, 0, strlen (buf))) result |= 2; } { /* Pseudo-NaN. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; if (sprintf (buf, "%Lf", x.value) <= 0) result |= 4; if (sprintf (buf, "%Le", x.value) <= 0) result |= 4; if (sprintf (buf, "%Lg", x.value) <= 0) result |= 4; } { /* Pseudo-Infinity. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; if (sprintf (buf, "%Lf", x.value) <= 0) result |= 8; if (sprintf (buf, "%Le", x.value) <= 0) result |= 8; if (sprintf (buf, "%Lg", x.value) <= 0) result |= 8; } { /* Pseudo-Zero. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; if (sprintf (buf, "%Lf", x.value) <= 0) result |= 16; if (sprintf (buf, "%Le", x.value) <= 0) result |= 16; if (sprintf (buf, "%Lg", x.value) <= 0) result |= 16; } { /* Unnormalized number. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; if (sprintf (buf, "%Lf", x.value) <= 0) result |= 32; if (sprintf (buf, "%Le", x.value) <= 0) result |= 32; if (sprintf (buf, "%Lg", x.value) <= 0) result |= 32; } { /* Pseudo-Denormal. */ static union { unsigned int word[4]; long double value; } x = { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; if (sprintf (buf, "%Lf", x.value) <= 0) result |= 64; if (sprintf (buf, "%Le", x.value) <= 0) result |= 64; if (sprintf (buf, "%Lg", x.value) <= 0) result |= 64; } #endif return result; }]])], [gl_cv_func_printf_infinite_long_double=yes], [gl_cv_func_printf_infinite_long_double=no], [case "$host_cpu" in # Guess no on ia64, x86_64, i386. ia64 | x86_64 | i*86) gl_cv_func_printf_infinite_long_double="guessing no";; *) case "$host_os" in changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_infinite_long_double="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_printf_infinite_long_double="guessing yes";; # Guess yes on FreeBSD >= 6. freebsd[1-5].*) gl_cv_func_printf_infinite_long_double="guessing no";; freebsd* | kfreebsd*) gl_cv_func_printf_infinite_long_double="guessing yes";; # Guess yes on HP-UX >= 11. hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite_long_double="guessing no";; hpux*) gl_cv_func_printf_infinite_long_double="guessing yes";; # Guess no on Android. linux*-android*) gl_cv_func_printf_infinite_long_double="guessing no";; changequote([,])dnl # Guess yes on MSVC, no on mingw. mingw*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif ], [gl_cv_func_printf_infinite_long_double="guessing yes"], [gl_cv_func_printf_infinite_long_double="guessing no"]) ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_infinite_long_double="$gl_cross_guess_normal";; esac ;; esac ]) ]) ;; *) gl_cv_func_printf_infinite_long_double="irrelevant" ;; esac ]) dnl Test whether the *printf family of functions supports the 'a' and 'A' dnl conversion specifier for hexadecimal output of floating-point numbers. dnl (ISO C99, POSIX:2001) dnl Result is gl_cv_func_printf_directive_a. AC_DEFUN([gl_PRINTF_DIRECTIVE_A], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports the 'a' and 'A' directives], [gl_cv_func_printf_directive_a], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static char buf[100]; static double zero = 0.0; int main () { int result = 0; if (sprintf (buf, "%a %d", 3.1416015625, 33, 44, 55) < 0 || (strcmp (buf, "0x1.922p+1 33") != 0 && strcmp (buf, "0x3.244p+0 33") != 0 && strcmp (buf, "0x6.488p-1 33") != 0 && strcmp (buf, "0xc.91p-2 33") != 0)) result |= 1; if (sprintf (buf, "%A %d", -3.1416015625, 33, 44, 55) < 0 || (strcmp (buf, "-0X1.922P+1 33") != 0 && strcmp (buf, "-0X3.244P+0 33") != 0 && strcmp (buf, "-0X6.488P-1 33") != 0 && strcmp (buf, "-0XC.91P-2 33") != 0)) result |= 2; /* This catches a FreeBSD 6.1 bug: it doesn't round. */ if (sprintf (buf, "%.2a %d", 1.51, 33, 44, 55) < 0 || (strcmp (buf, "0x1.83p+0 33") != 0 && strcmp (buf, "0x3.05p-1 33") != 0 && strcmp (buf, "0x6.0ap-2 33") != 0 && strcmp (buf, "0xc.14p-3 33") != 0)) result |= 4; /* This catches a Mac OS X 10.12.4 (Darwin 16.5) bug: it doesn't round. */ if (sprintf (buf, "%.0a %d", 1.51, 33, 44, 55) < 0 || (strcmp (buf, "0x2p+0 33") != 0 && strcmp (buf, "0x3p-1 33") != 0 && strcmp (buf, "0x6p-2 33") != 0 && strcmp (buf, "0xcp-3 33") != 0)) result |= 4; /* This catches a FreeBSD 6.1 bug. See */ if (sprintf (buf, "%010a %d", 1.0 / zero, 33, 44, 55) < 0 || buf[0] == '0') result |= 8; /* This catches a Mac OS X 10.3.9 (Darwin 7.9) bug. */ if (sprintf (buf, "%.1a", 1.999) < 0 || (strcmp (buf, "0x1.0p+1") != 0 && strcmp (buf, "0x2.0p+0") != 0 && strcmp (buf, "0x4.0p-1") != 0 && strcmp (buf, "0x8.0p-2") != 0)) result |= 16; /* This catches the same Mac OS X 10.3.9 (Darwin 7.9) bug and also a glibc 2.4 bug . */ if (sprintf (buf, "%.1La", 1.999L) < 0 || (strcmp (buf, "0x1.0p+1") != 0 && strcmp (buf, "0x2.0p+0") != 0 && strcmp (buf, "0x4.0p-1") != 0 && strcmp (buf, "0x8.0p-2") != 0)) result |= 32; return result; }]])], [gl_cv_func_printf_directive_a=yes], [gl_cv_func_printf_directive_a=no], [ case "$host_os" in # Guess yes on glibc >= 2.5 systems. *-gnu* | gnu*) AC_EGREP_CPP([BZ2908], [ #include #ifdef __GNU_LIBRARY__ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 5) || (__GLIBC__ > 2)) && !defined __UCLIBC__ BZ2908 #endif #endif ], [gl_cv_func_printf_directive_a="guessing yes"], [gl_cv_func_printf_directive_a="guessing no"]) ;; # Guess yes on musl systems. *-musl*) gl_cv_func_printf_directive_a="guessing yes";; # Guess no on Android. linux*-android*) gl_cv_func_printf_directive_a="guessing no";; # Guess no on native Windows. mingw*) gl_cv_func_printf_directive_a="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_directive_a="$gl_cross_guess_normal";; esac ]) ]) ]) dnl Test whether the *printf family of functions supports the %F format dnl directive. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_printf_directive_f. AC_DEFUN([gl_PRINTF_DIRECTIVE_F], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports the 'F' directive], [gl_cv_func_printf_directive_f], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static char buf[100]; static double zero = 0.0; int main () { int result = 0; if (sprintf (buf, "%F %d", 1234567.0, 33, 44, 55) < 0 || strcmp (buf, "1234567.000000 33") != 0) result |= 1; if (sprintf (buf, "%F", 1.0 / zero) < 0 || (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0)) result |= 2; /* This catches a Cygwin 1.5.x bug. */ if (sprintf (buf, "%.F", 1234.0) < 0 || strcmp (buf, "1234") != 0) result |= 4; return result; }]])], [gl_cv_func_printf_directive_f=yes], [gl_cv_func_printf_directive_f=no], [ case "$host_os" in changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_directive_f="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_printf_directive_f="guessing yes";; # Guess yes on FreeBSD >= 6. freebsd[1-5].*) gl_cv_func_printf_directive_f="guessing no";; freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_printf_directive_f="guessing no";; darwin*) gl_cv_func_printf_directive_f="guessing yes";; # Guess yes on Solaris >= 2.10. solaris2.[1-9][0-9]*) gl_cv_func_printf_directive_f="guessing yes";; solaris*) gl_cv_func_printf_directive_f="guessing no";; # Guess no on Android. linux*-android*) gl_cv_func_printf_directive_f="guessing no";; changequote([,])dnl # Guess yes on MSVC, no on mingw. mingw*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif ], [gl_cv_func_printf_directive_f="guessing yes"], [gl_cv_func_printf_directive_f="guessing no"]) ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_directive_f="$gl_cross_guess_normal";; esac ]) ]) ]) dnl Test whether the *printf family of functions supports the %n format dnl directive. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_printf_directive_n. AC_DEFUN([gl_PRINTF_DIRECTIVE_N], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports the 'n' directive], [gl_cv_func_printf_directive_n], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #ifdef _MSC_VER /* See page about "Parameter Validation" on msdn.microsoft.com. */ static void cdecl invalid_parameter_handler (const wchar_t *expression, const wchar_t *function, const wchar_t *file, unsigned int line, uintptr_t dummy) { exit (1); } #endif static char fmtstring[10]; static char buf[100]; int main () { int count = -1; #ifdef _MSC_VER _set_invalid_parameter_handler (invalid_parameter_handler); #endif /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) support %n in format strings in read-only memory but not in writable memory. */ strcpy (fmtstring, "%d %n"); if (sprintf (buf, fmtstring, 123, &count, 33, 44, 55) < 0 || strcmp (buf, "123 ") != 0 || count != 4) return 1; return 0; }]])], [gl_cv_func_printf_directive_n=yes], [gl_cv_func_printf_directive_n=no], [case "$host_os" in # Guess no on glibc when _FORTIFY_SOURCE >= 2. *-gnu* | gnu*) AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if _FORTIFY_SOURCE >= 2 error fail #endif ]])], [gl_cv_func_printf_directive_n="guessing yes"], [gl_cv_func_printf_directive_n="guessing no"]) ;; # Guess no on Android. linux*-android*) gl_cv_func_printf_directive_n="guessing no";; # Guess no on native Windows. mingw*) gl_cv_func_printf_directive_n="guessing no";; *) gl_cv_func_printf_directive_n="guessing yes";; esac ]) ]) ]) dnl Test whether the *printf family of functions supports the %ls format dnl directive and in particular, when a precision is specified, whether dnl the functions stop converting the wide string argument when the number dnl of bytes that have been produced by this conversion equals or exceeds dnl the precision. dnl Result is gl_cv_func_printf_directive_ls. AC_DEFUN([gl_PRINTF_DIRECTIVE_LS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports the 'ls' directive], [gl_cv_func_printf_directive_ls], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #include int main () { int result = 0; char buf[100]; /* Test whether %ls works at all. This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on Cygwin 1.5. */ { static const wchar_t wstring[] = { 'a', 'b', 'c', 0 }; buf[0] = '\0'; if (sprintf (buf, "%ls", wstring) < 0 || strcmp (buf, "abc") != 0) result |= 1; } /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an assertion failure inside libc), but not on OpenBSD 4.0. */ { static const wchar_t wstring[] = { 'a', 0 }; buf[0] = '\0'; if (sprintf (buf, "%ls", wstring) < 0 || strcmp (buf, "a") != 0) result |= 2; } /* Test whether precisions in %ls are supported as specified in ISO C 99 section 7.19.6.1: "If a precision is specified, no more than that many bytes are written (including shift sequences, if any), and the array shall contain a null wide character if, to equal the multibyte character sequence length given by the precision, the function would need to access a wide character one past the end of the array." This test fails on Solaris 10. */ { static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 }; buf[0] = '\0'; if (sprintf (buf, "%.2ls", wstring) < 0 || strcmp (buf, "ab") != 0) result |= 8; } return result; }]])], [gl_cv_func_printf_directive_ls=yes], [gl_cv_func_printf_directive_ls=no], [ changequote(,)dnl case "$host_os" in openbsd*) gl_cv_func_printf_directive_ls="guessing no";; irix*) gl_cv_func_printf_directive_ls="guessing no";; solaris*) gl_cv_func_printf_directive_ls="guessing no";; cygwin*) gl_cv_func_printf_directive_ls="guessing no";; beos* | haiku*) gl_cv_func_printf_directive_ls="guessing no";; # Guess no on Android. linux*-android*) gl_cv_func_printf_directive_ls="guessing no";; # Guess yes on native Windows. mingw*) gl_cv_func_printf_directive_ls="guessing yes";; *) gl_cv_func_printf_directive_ls="guessing yes";; esac changequote([,])dnl ]) ]) ]) dnl Test whether the *printf family of functions supports POSIX/XSI format dnl strings with positions. (POSIX:2001) dnl Result is gl_cv_func_printf_positions. AC_DEFUN([gl_PRINTF_POSITIONS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports POSIX/XSI format strings with positions], [gl_cv_func_printf_positions], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* The string "%2$d %1$d", with dollar characters protected from the shell's dollar expansion (possibly an autoconf bug). */ static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' }; static char buf[100]; int main () { sprintf (buf, format, 33, 55); return (strcmp (buf, "55 33") != 0); }]])], [gl_cv_func_printf_positions=yes], [gl_cv_func_printf_positions=no], [ changequote(,)dnl case "$host_os" in netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*) gl_cv_func_printf_positions="guessing no";; beos*) gl_cv_func_printf_positions="guessing no";; # Guess yes on Android. linux*-android*) gl_cv_func_printf_positions="guessing yes";; # Guess no on native Windows. mingw* | pw*) gl_cv_func_printf_positions="guessing no";; *) gl_cv_func_printf_positions="guessing yes";; esac changequote([,])dnl ]) ]) ]) dnl Test whether the *printf family of functions supports POSIX/XSI format dnl strings with the ' flag for grouping of decimal digits. (POSIX:2001) dnl Result is gl_cv_func_printf_flag_grouping. AC_DEFUN([gl_PRINTF_FLAG_GROUPING], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports the grouping flag], [gl_cv_func_printf_flag_grouping], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static char buf[100]; int main () { if (sprintf (buf, "%'d %d", 1234567, 99) < 0 || buf[strlen (buf) - 1] != '9') return 1; return 0; }]])], [gl_cv_func_printf_flag_grouping=yes], [gl_cv_func_printf_flag_grouping=no], [ changequote(,)dnl case "$host_os" in cygwin*) gl_cv_func_printf_flag_grouping="guessing no";; netbsd*) gl_cv_func_printf_flag_grouping="guessing no";; # Guess no on Android. linux*-android*) gl_cv_func_printf_flag_grouping="guessing no";; # Guess no on native Windows. mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";; *) gl_cv_func_printf_flag_grouping="guessing yes";; esac changequote([,])dnl ]) ]) ]) dnl Test whether the *printf family of functions supports the - flag correctly. dnl (ISO C99.) See dnl dnl Result is gl_cv_func_printf_flag_leftadjust. AC_DEFUN([gl_PRINTF_FLAG_LEFTADJUST], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports the left-adjust flag correctly], [gl_cv_func_printf_flag_leftadjust], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static char buf[100]; int main () { /* Check that a '-' flag is not annihilated by a negative width. */ if (sprintf (buf, "a%-*sc", -3, "b") < 0 || strcmp (buf, "ab c") != 0) return 1; return 0; }]])], [gl_cv_func_printf_flag_leftadjust=yes], [gl_cv_func_printf_flag_leftadjust=no], [ changequote(,)dnl case "$host_os" in # Guess yes on HP-UX 11. hpux11*) gl_cv_func_printf_flag_leftadjust="guessing yes";; # Guess no on HP-UX 10 and older. hpux*) gl_cv_func_printf_flag_leftadjust="guessing no";; # Guess yes on Android. linux*-android*) gl_cv_func_printf_flag_leftadjust="guessing yes";; # Guess yes on native Windows. mingw*) gl_cv_func_printf_flag_leftadjust="guessing yes";; # Guess yes otherwise. *) gl_cv_func_printf_flag_leftadjust="guessing yes";; esac changequote([,])dnl ]) ]) ]) dnl Test whether the *printf family of functions supports padding of non-finite dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See dnl dnl Result is gl_cv_func_printf_flag_zero. AC_DEFUN([gl_PRINTF_FLAG_ZERO], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports the zero flag correctly], [gl_cv_func_printf_flag_zero], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static char buf[100]; static double zero = 0.0; int main () { if (sprintf (buf, "%010f", 1.0 / zero, 33, 44, 55) < 0 || (strcmp (buf, " inf") != 0 && strcmp (buf, " infinity") != 0)) return 1; return 0; }]])], [gl_cv_func_printf_flag_zero=yes], [gl_cv_func_printf_flag_zero=no], [ changequote(,)dnl case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_flag_zero="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_printf_flag_zero="guessing yes";; # Guess yes on BeOS. beos*) gl_cv_func_printf_flag_zero="guessing yes";; # Guess no on Android. linux*-android*) gl_cv_func_printf_flag_zero="guessing no";; # Guess no on native Windows. mingw*) gl_cv_func_printf_flag_zero="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_flag_zero="$gl_cross_guess_normal";; esac changequote([,])dnl ]) ]) ]) dnl Test whether the *printf family of functions supports large precisions. dnl On mingw, precisions larger than 512 are treated like 512, in integer, dnl floating-point or pointer output. On Solaris 10/x86, precisions larger dnl than 510 in floating-point output crash the program. On Solaris 10/SPARC, dnl precisions larger than 510 in floating-point output yield wrong results. dnl On AIX 7.1, precisions larger than 998 in floating-point output yield dnl wrong results. On BeOS, precisions larger than 1044 crash the program. dnl Result is gl_cv_func_printf_precision. AC_DEFUN([gl_PRINTF_PRECISION], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf supports large precisions], [gl_cv_func_printf_precision], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static char buf[5000]; int main () { int result = 0; #ifdef __BEOS__ /* On BeOS, this would crash and show a dialog box. Avoid the crash. */ return 1; #endif if (sprintf (buf, "%.4000d %d", 1, 33, 44) < 4000 + 3) result |= 1; if (sprintf (buf, "%.4000f %d", 1.0, 33, 44) < 4000 + 5) result |= 2; if (sprintf (buf, "%.511f %d", 1.0, 33, 44) < 511 + 5 || buf[0] != '1') result |= 4; if (sprintf (buf, "%.999f %d", 1.0, 33, 44) < 999 + 5 || buf[0] != '1') result |= 4; return result; }]])], [gl_cv_func_printf_precision=yes], [gl_cv_func_printf_precision=no], [ changequote(,)dnl case "$host_os" in # Guess no only on Solaris, native Windows, and BeOS systems. solaris*) gl_cv_func_printf_precision="guessing no" ;; mingw* | pw*) gl_cv_func_printf_precision="guessing no" ;; beos*) gl_cv_func_printf_precision="guessing no" ;; # Guess yes on Android. linux*-android*) gl_cv_func_printf_precision="guessing yes" ;; *) gl_cv_func_printf_precision="guessing yes" ;; esac changequote([,])dnl ]) ]) ]) dnl Test whether the *printf family of functions recovers gracefully in case dnl of an out-of-memory condition, or whether it crashes the entire program. dnl Result is gl_cv_func_printf_enomem. AC_DEFUN([gl_PRINTF_ENOMEM], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gl_MULTIARCH]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether printf survives out-of-memory conditions], [gl_cv_func_printf_enomem], [ gl_cv_func_printf_enomem="guessing no" if test "$cross_compiling" = no; then if test $APPLE_UNIVERSAL_BUILD = 0; then AC_LANG_CONFTEST([AC_LANG_SOURCE([ ]GL_NOCRASH[ changequote(,)dnl #include #include #include #include #include int main() { struct rlimit limit; int ret; nocrash_init (); /* Some printf implementations allocate temporary space with malloc. */ /* On BSD systems, malloc() is limited by RLIMIT_DATA. */ #ifdef RLIMIT_DATA if (getrlimit (RLIMIT_DATA, &limit) < 0) return 77; if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) limit.rlim_max = 5000000; limit.rlim_cur = limit.rlim_max; if (setrlimit (RLIMIT_DATA, &limit) < 0) return 77; #endif /* On Linux systems, malloc() is limited by RLIMIT_AS. */ #ifdef RLIMIT_AS if (getrlimit (RLIMIT_AS, &limit) < 0) return 77; if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) limit.rlim_max = 5000000; limit.rlim_cur = limit.rlim_max; if (setrlimit (RLIMIT_AS, &limit) < 0) return 77; #endif /* Some printf implementations allocate temporary space on the stack. */ #ifdef RLIMIT_STACK if (getrlimit (RLIMIT_STACK, &limit) < 0) return 77; if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) limit.rlim_max = 5000000; limit.rlim_cur = limit.rlim_max; if (setrlimit (RLIMIT_STACK, &limit) < 0) return 77; #endif ret = printf ("%.5000000f", 1.0); return !(ret == 5000002 || (ret < 0 && errno == ENOMEM)); } changequote([,])dnl ])]) if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then (./conftest 2>&AS_MESSAGE_LOG_FD result=$? _AS_ECHO_LOG([\$? = $result]) if test $result != 0 && test $result != 77; then result=1; fi exit $result ) >/dev/null 2>/dev/null case $? in 0) gl_cv_func_printf_enomem="yes" ;; 77) gl_cv_func_printf_enomem="guessing no" ;; *) gl_cv_func_printf_enomem="no" ;; esac else gl_cv_func_printf_enomem="guessing no" fi rm -fr conftest* else dnl A universal build on Apple Mac OS X platforms. dnl The result would be 'no' in 32-bit mode and 'yes' in 64-bit mode. dnl But we need a configuration result that is valid in both modes. gl_cv_func_printf_enomem="guessing no" fi fi if test "$gl_cv_func_printf_enomem" = "guessing no"; then changequote(,)dnl case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_enomem="guessing yes";; # Guess yes on Solaris. solaris*) gl_cv_func_printf_enomem="guessing yes";; # Guess yes on AIX. aix*) gl_cv_func_printf_enomem="guessing yes";; # Guess yes on HP-UX/hppa. hpux*) case "$host_cpu" in hppa*) gl_cv_func_printf_enomem="guessing yes";; *) gl_cv_func_printf_enomem="guessing no";; esac ;; # Guess yes on IRIX. irix*) gl_cv_func_printf_enomem="guessing yes";; # Guess yes on OSF/1. osf*) gl_cv_func_printf_enomem="guessing yes";; # Guess yes on BeOS. beos*) gl_cv_func_printf_enomem="guessing yes";; # Guess yes on Haiku. haiku*) gl_cv_func_printf_enomem="guessing yes";; # Guess no on Android. linux*-android*) gl_cv_func_printf_enomem="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_enomem="$gl_cross_guess_normal";; esac changequote([,])dnl fi ]) ]) dnl Test whether the snprintf function exists. (ISO C99, POSIX:2001) dnl Result is ac_cv_func_snprintf. AC_DEFUN([gl_SNPRINTF_PRESENCE], [ AC_CHECK_FUNCS_ONCE([snprintf]) ]) dnl Test whether the string produced by the snprintf function is always NUL dnl terminated. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_snprintf_truncation_c99. AC_DEFUN([gl_SNPRINTF_TRUNCATION_C99], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_SNPRINTF_PRESENCE]) AC_CACHE_CHECK([whether snprintf truncates the result as in C99], [gl_cv_func_snprintf_truncation_c99], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #if HAVE_SNPRINTF # define my_snprintf snprintf #else # include static int my_snprintf (char *buf, int size, const char *format, ...) { va_list args; int ret; va_start (args, format); ret = vsnprintf (buf, size, format, args); va_end (args); return ret; } #endif static char buf[100]; int main () { strcpy (buf, "ABCDEF"); my_snprintf (buf, 3, "%d %d", 4567, 89); if (memcmp (buf, "45\0DEF", 6) != 0) return 1; return 0; }]])], [gl_cv_func_snprintf_truncation_c99=yes], [gl_cv_func_snprintf_truncation_c99=no], [ changequote(,)dnl case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on FreeBSD >= 5. freebsd[1-4].*) gl_cv_func_snprintf_truncation_c99="guessing no";; freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_snprintf_truncation_c99="guessing no";; darwin*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on OpenBSD >= 3.9. openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) gl_cv_func_snprintf_truncation_c99="guessing no";; openbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on Solaris >= 2.6. solaris2.[0-5] | solaris2.[0-5].*) gl_cv_func_snprintf_truncation_c99="guessing no";; solaris*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on AIX >= 4. aix[1-3]*) gl_cv_func_snprintf_truncation_c99="guessing no";; aix*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on HP-UX >= 11. hpux[7-9]* | hpux10*) gl_cv_func_snprintf_truncation_c99="guessing no";; hpux*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on IRIX >= 6.5. irix6.5) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on OSF/1 >= 5. osf[3-4]*) gl_cv_func_snprintf_truncation_c99="guessing no";; osf*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on NetBSD >= 3. netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) gl_cv_func_snprintf_truncation_c99="guessing no";; netbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on BeOS. beos*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on Android. linux*-android*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess no on native Windows. mingw*) gl_cv_func_snprintf_truncation_c99="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_snprintf_truncation_c99="$gl_cross_guess_normal";; esac changequote([,])dnl ]) ]) ]) dnl Test whether the return value of the snprintf function is the number dnl of bytes (excluding the terminating NUL) that would have been produced dnl if the buffer had been large enough. (ISO C99, POSIX:2001) dnl For example, this test program fails on IRIX 6.5: dnl --------------------------------------------------------------------- dnl #include dnl int main() dnl { dnl static char buf[8]; dnl int retval = snprintf (buf, 3, "%d", 12345); dnl return retval >= 0 && retval < 3; dnl } dnl --------------------------------------------------------------------- dnl Result is gl_cv_func_snprintf_retval_c99. AC_DEFUN_ONCE([gl_SNPRINTF_RETVAL_C99], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_SNPRINTF_PRESENCE]) AC_CACHE_CHECK([whether snprintf returns a byte count as in C99], [gl_cv_func_snprintf_retval_c99], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #if HAVE_SNPRINTF # define my_snprintf snprintf #else # include static int my_snprintf (char *buf, int size, const char *format, ...) { va_list args; int ret; va_start (args, format); ret = vsnprintf (buf, size, format, args); va_end (args); return ret; } #endif static char buf[100]; int main () { strcpy (buf, "ABCDEF"); if (my_snprintf (buf, 3, "%d %d", 4567, 89) != 7) return 1; if (my_snprintf (buf, 0, "%d %d", 4567, 89) != 7) return 2; if (my_snprintf (NULL, 0, "%d %d", 4567, 89) != 7) return 3; return 0; }]])], [gl_cv_func_snprintf_retval_c99=yes], [gl_cv_func_snprintf_retval_c99=no], [case "$host_os" in changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on FreeBSD >= 5. freebsd[1-4].*) gl_cv_func_snprintf_retval_c99="guessing no";; freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_snprintf_retval_c99="guessing no";; darwin*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on OpenBSD >= 3.9. openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) gl_cv_func_snprintf_retval_c99="guessing no";; openbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on Solaris >= 2.10. solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; solaris*) gl_cv_func_printf_sizes_c99="guessing no";; # Guess yes on AIX >= 4. aix[1-3]*) gl_cv_func_snprintf_retval_c99="guessing no";; aix*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on NetBSD >= 3. netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) gl_cv_func_snprintf_retval_c99="guessing no";; netbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on BeOS. beos*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on Android. linux*-android*) gl_cv_func_snprintf_retval_c99="guessing yes";; changequote([,])dnl # Guess yes on MSVC, no on mingw. mingw*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif ], [gl_cv_func_snprintf_retval_c99="guessing yes"], [gl_cv_func_snprintf_retval_c99="guessing no"]) ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_snprintf_retval_c99="$gl_cross_guess_normal";; esac ]) ]) ]) dnl Test whether the snprintf function supports the %n format directive dnl also in truncated portions of the format string. (ISO C99, POSIX:2001) dnl Result is gl_cv_func_snprintf_directive_n. AC_DEFUN([gl_SNPRINTF_DIRECTIVE_N], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_SNPRINTF_PRESENCE]) AC_CACHE_CHECK([whether snprintf fully supports the 'n' directive], [gl_cv_func_snprintf_directive_n], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #if HAVE_SNPRINTF # define my_snprintf snprintf #else # include static int my_snprintf (char *buf, int size, const char *format, ...) { va_list args; int ret; va_start (args, format); ret = vsnprintf (buf, size, format, args); va_end (args); return ret; } #endif static char fmtstring[10]; static char buf[100]; int main () { int count = -1; /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) support %n in format strings in read-only memory but not in writable memory. */ strcpy (fmtstring, "%d %n"); my_snprintf (buf, 4, fmtstring, 12345, &count, 33, 44, 55); if (count != 6) return 1; return 0; }]])], [gl_cv_func_snprintf_directive_n=yes], [gl_cv_func_snprintf_directive_n=no], [ case "$host_os" in # Guess no on glibc when _FORTIFY_SOURCE >= 2. *-gnu* | gnu*) AC_COMPILE_IFELSE( [AC_LANG_SOURCE( [[#if _FORTIFY_SOURCE >= 2 error fail #endif ]])], [gl_cv_func_snprintf_directive_n="guessing yes"], [gl_cv_func_snprintf_directive_n="guessing no"]) ;; changequote(,)dnl # Guess yes on musl systems. *-musl*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on FreeBSD >= 5. freebsd[1-4].*) gl_cv_func_snprintf_directive_n="guessing no";; freebsd* | kfreebsd*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_snprintf_directive_n="guessing no";; darwin*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on Solaris >= 2.6. solaris2.[0-5] | solaris2.[0-5].*) gl_cv_func_snprintf_directive_n="guessing no";; solaris*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on AIX >= 4. aix[1-3]*) gl_cv_func_snprintf_directive_n="guessing no";; aix*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on IRIX >= 6.5. irix6.5) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on OSF/1 >= 5. osf[3-4]*) gl_cv_func_snprintf_directive_n="guessing no";; osf*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on NetBSD >= 3. netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) gl_cv_func_snprintf_directive_n="guessing no";; netbsd*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess yes on BeOS. beos*) gl_cv_func_snprintf_directive_n="guessing yes";; # Guess no on Android. linux*-android*) gl_cv_func_snprintf_directive_n="guessing no";; # Guess no on native Windows. mingw*) gl_cv_func_snprintf_directive_n="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_snprintf_directive_n="$gl_cross_guess_normal";; changequote([,])dnl esac ]) ]) ]) dnl Test whether the snprintf function, when passed a size = 1, writes any dnl output without bounds in this case, behaving like sprintf. This is the dnl case on Linux libc5. dnl Result is gl_cv_func_snprintf_size1. AC_DEFUN([gl_SNPRINTF_SIZE1], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_SNPRINTF_PRESENCE]) AC_CACHE_CHECK([whether snprintf respects a size of 1], [gl_cv_func_snprintf_size1], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #if HAVE_SNPRINTF # define my_snprintf snprintf #else # include static int my_snprintf (char *buf, int size, const char *format, ...) { va_list args; int ret; va_start (args, format); ret = vsnprintf (buf, size, format, args); va_end (args); return ret; } #endif int main() { static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; my_snprintf (buf, 1, "%d", 12345); return buf[1] != 'E'; }]])], [gl_cv_func_snprintf_size1=yes], [gl_cv_func_snprintf_size1=no], [case "$host_os" in # Guess yes on Android. linux*-android*) gl_cv_func_snprintf_size1="guessing yes" ;; # Guess yes on native Windows. mingw*) gl_cv_func_snprintf_size1="guessing yes" ;; *) gl_cv_func_snprintf_size1="guessing yes" ;; esac ]) ]) ]) dnl Test whether the vsnprintf function, when passed a zero size, produces no dnl output. (ISO C99, POSIX:2001) dnl For example, snprintf nevertheless writes a NUL byte in this case dnl on OSF/1 5.1: dnl --------------------------------------------------------------------- dnl #include dnl int main() dnl { dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; dnl snprintf (buf, 0, "%d", 12345); dnl return buf[0] != 'D'; dnl } dnl --------------------------------------------------------------------- dnl And vsnprintf writes any output without bounds in this case, behaving like dnl vsprintf, on HP-UX 11 and OSF/1 5.1: dnl --------------------------------------------------------------------- dnl #include dnl #include dnl static int my_snprintf (char *buf, int size, const char *format, ...) dnl { dnl va_list args; dnl int ret; dnl va_start (args, format); dnl ret = vsnprintf (buf, size, format, args); dnl va_end (args); dnl return ret; dnl } dnl int main() dnl { dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; dnl my_snprintf (buf, 0, "%d", 12345); dnl return buf[0] != 'D'; dnl } dnl --------------------------------------------------------------------- dnl Result is gl_cv_func_vsnprintf_zerosize_c99. AC_DEFUN([gl_VSNPRINTF_ZEROSIZE_C99], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether vsnprintf respects a zero size as in C99], [gl_cv_func_vsnprintf_zerosize_c99], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include static int my_snprintf (char *buf, int size, const char *format, ...) { va_list args; int ret; va_start (args, format); ret = vsnprintf (buf, size, format, args); va_end (args); return ret; } int main() { static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; my_snprintf (buf, 0, "%d", 12345); return buf[0] != 'D'; }]])], [gl_cv_func_vsnprintf_zerosize_c99=yes], [gl_cv_func_vsnprintf_zerosize_c99=no], [ changequote(,)dnl case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on FreeBSD >= 5. freebsd[1-4].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; freebsd* | kfreebsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; darwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on Cygwin. cygwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on Solaris >= 2.6. solaris2.[0-5] | solaris2.[0-5].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; solaris*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on AIX >= 4. aix[1-3]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; aix*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on IRIX >= 6.5. irix6.5) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on NetBSD >= 3. netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; netbsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on BeOS. beos*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on Android. linux*-android*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # Guess yes on native Windows. mingw* | pw*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_vsnprintf_zerosize_c99="$gl_cross_guess_normal";; esac changequote([,])dnl ]) ]) ]) dnl The results of these tests on various platforms are: dnl dnl 1 = gl_PRINTF_SIZES_C99 dnl 2 = gl_PRINTF_LONG_DOUBLE dnl 3 = gl_PRINTF_INFINITE dnl 4 = gl_PRINTF_INFINITE_LONG_DOUBLE dnl 5 = gl_PRINTF_DIRECTIVE_A dnl 6 = gl_PRINTF_DIRECTIVE_F dnl 7 = gl_PRINTF_DIRECTIVE_N dnl 8 = gl_PRINTF_DIRECTIVE_LS dnl 9 = gl_PRINTF_POSITIONS dnl 10 = gl_PRINTF_FLAG_GROUPING dnl 11 = gl_PRINTF_FLAG_LEFTADJUST dnl 12 = gl_PRINTF_FLAG_ZERO dnl 13 = gl_PRINTF_PRECISION dnl 14 = gl_PRINTF_ENOMEM dnl 15 = gl_SNPRINTF_PRESENCE dnl 16 = gl_SNPRINTF_TRUNCATION_C99 dnl 17 = gl_SNPRINTF_RETVAL_C99 dnl 18 = gl_SNPRINTF_DIRECTIVE_N dnl 19 = gl_SNPRINTF_SIZE1 dnl 20 = gl_VSNPRINTF_ZEROSIZE_C99 dnl dnl 1 = checking whether printf supports size specifiers as in C99... dnl 2 = checking whether printf supports 'long double' arguments... dnl 3 = checking whether printf supports infinite 'double' arguments... dnl 4 = checking whether printf supports infinite 'long double' arguments... dnl 5 = checking whether printf supports the 'a' and 'A' directives... dnl 6 = checking whether printf supports the 'F' directive... dnl 7 = checking whether printf supports the 'n' directive... dnl 8 = checking whether printf supports the 'ls' directive... dnl 9 = checking whether printf supports POSIX/XSI format strings with positions... dnl 10 = checking whether printf supports the grouping flag... dnl 11 = checking whether printf supports the left-adjust flag correctly... dnl 12 = checking whether printf supports the zero flag correctly... dnl 13 = checking whether printf supports large precisions... dnl 14 = checking whether printf survives out-of-memory conditions... dnl 15 = checking for snprintf... dnl 16 = checking whether snprintf truncates the result as in C99... dnl 17 = checking whether snprintf returns a byte count as in C99... dnl 18 = checking whether snprintf fully supports the 'n' directive... dnl 19 = checking whether snprintf respects a size of 1... dnl 20 = checking whether vsnprintf respects a zero size as in C99... dnl dnl . = yes, # = no. dnl dnl 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 dnl glibc 2.5 . . . . . . . . . . . . . . . . . . . . dnl glibc 2.3.6 . . . . # . . . . . . . . . . . . . . . dnl FreeBSD 5.4, 6.1 . . . . # . . . . . . # . # . . . . . . dnl Mac OS X 10.5.8 . . . # # . . . . . . # . . . . . . . . dnl Mac OS X 10.3.9 . . . . # . . . . . . # . # . . . . . . dnl OpenBSD 3.9, 4.0 . . # # # # . # . # . # . # . . . . . . dnl Cygwin 1.7.0 (2009) . . . # . . . ? . . . . . ? . . . . . . dnl Cygwin 1.5.25 (2008) . . . # # . . # . . . . . # . . . . . . dnl Cygwin 1.5.19 (2006) # . . # # # . # . # . # # # . . . . . . dnl Solaris 11.4 . . # # # . . # . . . # . . . . . . . . dnl Solaris 11.3 . . . . # . . # . . . . . . . . . . . . dnl Solaris 11.0 . . # # # . . # . . . # . . . . . . . . dnl Solaris 10 . . # # # . . # . . . # # . . . . . . . dnl Solaris 2.6 ... 9 # . # # # # . # . . . # # . . . # . . . dnl Solaris 2.5.1 # . # # # # . # . . . # . . # # # # # # dnl AIX 7.1 . . # # # . . . . . . # # . . . . . . . dnl AIX 5.2 . . # # # . . . . . . # . . . . . . . . dnl AIX 4.3.2, 5.1 # . # # # # . . . . . # . . . . # . . . dnl HP-UX 11.31 . . . . # . . . . . . # . . . . # # . . dnl HP-UX 11.{00,11,23} # . . . # # . . . . . # . . . . # # . # dnl HP-UX 10.20 # . # . # # . ? . . # # . . . . # # ? # dnl IRIX 6.5 # . # # # # . # . . . # . . . . # . . . dnl OSF/1 5.1 # . # # # # . . . . . # . . . . # . . # dnl OSF/1 4.0d # . # # # # . . . . . # . . # # # # # # dnl NetBSD 5.0 . . . # # . . . . . . # . # . . . . . . dnl NetBSD 4.0 . ? ? ? ? ? . ? . ? ? ? ? ? . . . ? ? ? dnl NetBSD 3.0 . . . . # # . ? # # ? # . # . . . . . . dnl Haiku . . . # # # . # . . . . . ? . . ? . . . dnl BeOS # # . # # # . ? # . ? . # ? . . ? . . . dnl Android 4.3 . . # # # # # # . # . # . # . . . # . . dnl old mingw / msvcrt # # # # # # . . # # . # # ? . # # # . . dnl MSVC 9 # # # # # # # . # # . # # ? # # # # . . dnl mingw 2009-2011 . # . # . . . . # # . . . ? . . . . . . dnl mingw-w64 2011 # # # # # # . . # # . # # ? . # # # . . # pthread_rwlock_rdlock.m4 serial 4 dnl Copyright (C) 2017-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Inspired by dnl https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_rwlock_rdlock/2-2.c dnl by Intel Corporation. dnl Test whether in a situation where dnl - an rwlock is taken by a reader and has a writer waiting, dnl - an additional reader requests the lock, dnl - the waiting writer and the requesting reader threads have the same dnl priority, dnl the requesting reader thread gets blocked, so that at some point the dnl waiting writer can acquire the lock. dnl Without such a guarantee, when there a N readers and each of the readers dnl spends more than 1/Nth of the time with the lock held, there is a high dnl probability that the waiting writer will not get the lock in a given finite dnl time, a phenomenon called "writer starvation". dnl Without such a guarantee, applications have a hard time avoiding writer dnl starvation. dnl dnl POSIX:2017 makes this requirement only for implementations that support TPS dnl (Thread Priority Scheduling) and only for the scheduling policies SCHED_FIFO dnl and SCHED_RR, see dnl https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_rwlock_rdlock.html dnl but this test verifies the guarantee regardless of TPS and regardless of dnl scheduling policy. dnl Glibc does not provide this guarantee (and never will on Linux), see dnl https://sourceware.org/bugzilla/show_bug.cgi?id=13701 dnl https://bugzilla.redhat.com/show_bug.cgi?id=1410052 AC_DEFUN([gl_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER], [ AC_REQUIRE([gl_THREADLIB_EARLY]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether pthread_rwlock_rdlock prefers a writer to a reader], [gl_cv_pthread_rwlock_rdlock_prefer_writer], [save_LIBS="$LIBS" LIBS="$LIBS $LIBMULTITHREAD" AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #include #include #define SUCCEED() exit (0) #define FAILURE() exit (1) #define UNEXPECTED(n) (exit (10 + (n))) /* The main thread creates the waiting writer and the requesting reader threads in the default way; this guarantees that they have the same priority. We can reuse the main thread as first reader thread. */ static pthread_rwlock_t lock; static pthread_t reader1; static pthread_t writer; static pthread_t reader2; static pthread_t timer; /* Used to pass control from writer to reader2 and from reader2 to timer, as in a relay race. Passing control from one running thread to another running thread is most likely faster than to create the second thread. */ static pthread_mutex_t baton; static void * timer_func (void *ignored) { /* Step 13 (can be before or after step 12): The timer thread takes the baton, then waits a moment to make sure it can tell whether the second reader thread is blocked at step 12. */ if (pthread_mutex_lock (&baton)) UNEXPECTED (13); usleep (100000); /* By the time we get here, it's clear that the second reader thread is blocked at step 12. This is the desired behaviour. */ SUCCEED (); } static void * reader2_func (void *ignored) { int err; /* Step 8 (can be before or after step 7): The second reader thread takes the baton, then waits a moment to make sure the writer thread has reached step 7. */ if (pthread_mutex_lock (&baton)) UNEXPECTED (8); usleep (100000); /* Step 9: The second reader thread requests the lock. */ err = pthread_rwlock_tryrdlock (&lock); if (err == 0) FAILURE (); else if (err != EBUSY) UNEXPECTED (9); /* Step 10: Launch a timer, to test whether the next call blocks. */ if (pthread_create (&timer, NULL, timer_func, NULL)) UNEXPECTED (10); /* Step 11: Release the baton. */ if (pthread_mutex_unlock (&baton)) UNEXPECTED (11); /* Step 12: The second reader thread requests the lock. */ err = pthread_rwlock_rdlock (&lock); if (err == 0) FAILURE (); else UNEXPECTED (12); } static void * writer_func (void *ignored) { /* Step 4: Take the baton, so that the second reader thread does not go ahead too early. */ if (pthread_mutex_lock (&baton)) UNEXPECTED (4); /* Step 5: Create the second reader thread. */ if (pthread_create (&reader2, NULL, reader2_func, NULL)) UNEXPECTED (5); /* Step 6: Release the baton. */ if (pthread_mutex_unlock (&baton)) UNEXPECTED (6); /* Step 7: The writer thread requests the lock. */ if (pthread_rwlock_wrlock (&lock)) UNEXPECTED (7); return NULL; } int main () { reader1 = pthread_self (); /* Step 1: The main thread initializes the lock and the baton. */ if (pthread_rwlock_init (&lock, NULL)) UNEXPECTED (1); if (pthread_mutex_init (&baton, NULL)) UNEXPECTED (1); /* Step 2: The main thread acquires the lock as a reader. */ if (pthread_rwlock_rdlock (&lock)) UNEXPECTED (2); /* Step 3: Create the writer thread. */ if (pthread_create (&writer, NULL, writer_func, NULL)) UNEXPECTED (3); /* Job done. Go to sleep. */ for (;;) { sleep (1); } } ]])], [gl_cv_pthread_rwlock_rdlock_prefer_writer=yes], [gl_cv_pthread_rwlock_rdlock_prefer_writer=no], [case "$host_os" in # Guess no on glibc systems. *-gnu* | gnu*) gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;; # Guess no on musl systems. *-musl*) gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;; # Guess no on bionic systems. *-android*) gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" ;; # Guess yes on native Windows with the mingw-w64 winpthreads library. # Guess no on native Windows with the gnulib windows-rwlock module. mingw*) if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing yes" else gl_cv_pthread_rwlock_rdlock_prefer_writer="guessing no" fi ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_pthread_rwlock_rdlock_prefer_writer="$gl_cross_guess_normal" ;; esac ]) LIBS="$save_LIBS" ]) case "$gl_cv_pthread_rwlock_rdlock_prefer_writer" in *yes) AC_DEFINE([HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER], [1], [Define if the 'pthread_rwlock_rdlock' function prefers a writer to a reader.]) ;; esac ]) # raise.m4 serial 4 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_RAISE], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_CHECK_FUNCS([raise]) if test $ac_cv_func_raise = no; then HAVE_RAISE=0 else m4_ifdef([gl_MSVC_INVAL], [ AC_REQUIRE([gl_MSVC_INVAL]) if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then REPLACE_RAISE=1 fi ]) m4_ifdef([gl_SIGNALBLOCKING], [ gl_SIGNALBLOCKING if test $HAVE_POSIX_SIGNALBLOCKING = 0; then m4_ifdef([gl_SIGNAL_SIGPIPE], [ gl_SIGNAL_SIGPIPE if test $gl_cv_header_signal_h_SIGPIPE != yes; then REPLACE_RAISE=1 fi ], [:]) fi ]) fi ]) # Prerequisites of lib/raise.c. AC_DEFUN([gl_PREREQ_RAISE], [:]) # readdir.m4 serial 1 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_READDIR], [ AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) AC_CHECK_FUNCS([readdir]) if test $ac_cv_func_readdir = no; then HAVE_READDIR=0 fi ]) # serial 69 # Copyright (C) 1996-2001, 2003-2020 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. dnl Initially derived from code in GNU grep. dnl Mostly written by Jim Meyering. AC_PREREQ([2.50]) AC_DEFUN([gl_REGEX], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_ARG_WITH([included-regex], [AS_HELP_STRING([--without-included-regex], [don't compile regex; this is the default on systems with recent-enough versions of the GNU C Library (use with caution on other systems).])]) case $with_included_regex in #( yes|no) ac_use_included_regex=$with_included_regex ;; '') # If the system regex support is good enough that it passes the # following run test, then default to *not* using the included regex.c. # If cross compiling, assume the test would fail and use the included # regex.c. AC_CHECK_DECLS_ONCE([alarm]) AC_CHECK_HEADERS_ONCE([malloc.h]) AC_CACHE_CHECK([for working re_compile_pattern], [gl_cv_func_re_compile_pattern_working], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include #include #include #include #if defined M_CHECK_ACTION || HAVE_DECL_ALARM # include # include #endif #if HAVE_MALLOC_H # include #endif #ifdef M_CHECK_ACTION /* Exit with distinguishable exit code. */ static void sigabrt_no_core (int sig) { raise (SIGTERM); } #endif ]], [[int result = 0; static struct re_pattern_buffer regex; unsigned char folded_chars[UCHAR_MAX + 1]; int i; const char *s; struct re_registers regs; /* Some builds of glibc go into an infinite loop on this test. Use alarm to force death, and mallopt to avoid malloc recursion in diagnosing the corrupted heap. */ #if HAVE_DECL_ALARM signal (SIGALRM, SIG_DFL); alarm (2); #endif #ifdef M_CHECK_ACTION signal (SIGABRT, sigabrt_no_core); mallopt (M_CHECK_ACTION, 2); #endif if (setlocale (LC_ALL, "en_US.UTF-8")) { { /* https://sourceware.org/ml/libc-hacker/2006-09/msg00008.html This test needs valgrind to catch the bug on Debian GNU/Linux 3.1 x86, but it might catch the bug better on other platforms and it shouldn't hurt to try the test here. */ static char const pat[] = "insert into"; static char const data[] = "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK"; re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE | RE_ICASE); memset (®ex, 0, sizeof regex); s = re_compile_pattern (pat, sizeof pat - 1, ®ex); if (s) result |= 1; else if (re_search (®ex, data, sizeof data - 1, 0, sizeof data - 1, ®s) != -1) result |= 1; regfree (®ex); } { /* This test is from glibc bug 15078. The test case is from Andreas Schwab in . */ static char const pat[] = "[^x]x"; static char const data[] = /* */ "\xe1\x80\x80" "\xe1\x80\xbb" "\xe1\x80\xbd" "\xe1\x80\x94" "\xe1\x80\xba" "\xe1\x80\xaf" "\xe1\x80\x95" "\xe1\x80\xba" "x"; re_set_syntax (0); memset (®ex, 0, sizeof regex); s = re_compile_pattern (pat, sizeof pat - 1, ®ex); if (s) result |= 1; else { i = re_search (®ex, data, sizeof data - 1, 0, sizeof data - 1, 0); if (i != 0 && i != 21) result |= 1; } regfree (®ex); } if (! setlocale (LC_ALL, "C")) return 1; } /* This test is from glibc bug 3957, reported by Andrew Mackey. */ re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE); memset (®ex, 0, sizeof regex); s = re_compile_pattern ("a[^x]b", 6, ®ex); if (s) result |= 2; /* This should fail, but succeeds for glibc-2.5. */ else if (re_search (®ex, "a\nb", 3, 0, 3, ®s) != -1) result |= 2; /* This regular expression is from Spencer ere test number 75 in grep-2.3. */ re_set_syntax (RE_SYNTAX_POSIX_EGREP); memset (®ex, 0, sizeof regex); for (i = 0; i <= UCHAR_MAX; i++) folded_chars[i] = i; regex.translate = folded_chars; s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, ®ex); /* This should fail with _Invalid character class name_ error. */ if (!s) result |= 4; /* Ensure that [b-a] is diagnosed as invalid, when using RE_NO_EMPTY_RANGES. */ re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES); memset (®ex, 0, sizeof regex); s = re_compile_pattern ("a[b-a]", 6, ®ex); if (s == 0) result |= 8; /* This should succeed, but does not for glibc-2.1.3. */ memset (®ex, 0, sizeof regex); s = re_compile_pattern ("{1", 2, ®ex); if (s) result |= 8; /* The following example is derived from a problem report against gawk from Jorge Stolfi . */ memset (®ex, 0, sizeof regex); s = re_compile_pattern ("[an\371]*n", 7, ®ex); if (s) result |= 8; /* This should match, but does not for glibc-2.2.1. */ else if (re_match (®ex, "an", 2, 0, ®s) != 2) result |= 8; memset (®ex, 0, sizeof regex); s = re_compile_pattern ("x", 1, ®ex); if (s) result |= 8; /* glibc-2.2.93 does not work with a negative RANGE argument. */ else if (re_search (®ex, "wxy", 3, 2, -2, ®s) != 1) result |= 8; /* The version of regex.c in older versions of gnulib ignored RE_ICASE. Detect that problem too. */ re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE); memset (®ex, 0, sizeof regex); s = re_compile_pattern ("x", 1, ®ex); if (s) result |= 16; else if (re_search (®ex, "WXY", 3, 0, 3, ®s) < 0) result |= 16; /* Catch a bug reported by Vin Shelton in https://lists.gnu.org/r/bug-coreutils/2007-06/msg00089.html */ re_set_syntax (RE_SYNTAX_POSIX_BASIC & ~RE_CONTEXT_INVALID_DUP & ~RE_NO_EMPTY_RANGES); memset (®ex, 0, sizeof regex); s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, ®ex); if (s) result |= 32; /* REG_STARTEND was added to glibc on 2004-01-15. Reject older versions. */ if (! REG_STARTEND) result |= 64; /* Matching with the compiled form of this regexp would provoke an assertion failure prior to glibc-2.28: regexec.c:1375: pop_fail_stack: Assertion 'num >= 0' failed With glibc-2.28, compilation fails and reports the invalid back reference. */ re_set_syntax (RE_SYNTAX_POSIX_EGREP); memset (®ex, 0, sizeof regex); s = re_compile_pattern ("0|()0|\\1|0", 10, ®ex); if (!s || strcmp (s, "Invalid back reference")) result |= 64; #if 0 /* It would be nice to reject hosts whose regoff_t values are too narrow (including glibc on hosts with 64-bit ptrdiff_t and 32-bit int), but we should wait until glibc implements this feature. Otherwise, support for equivalence classes and multibyte collation symbols would always be broken except when compiling --without-included-regex. */ if (sizeof (regoff_t) < sizeof (ptrdiff_t) || sizeof (regoff_t) < sizeof (ssize_t)) result |= 64; #endif return result; ]])], [gl_cv_func_re_compile_pattern_working=yes], [gl_cv_func_re_compile_pattern_working=no], [case "$host_os" in # Guess no on native Windows. mingw*) gl_cv_func_re_compile_pattern_working="guessing no" ;; # Otherwise obey --enable-cross-guesses. *) gl_cv_func_re_compile_pattern_working="$gl_cross_guess_normal" ;; esac ]) ]) case "$gl_cv_func_re_compile_pattern_working" in #( *yes) ac_use_included_regex=no;; #( *no) ac_use_included_regex=yes;; esac ;; *) AC_MSG_ERROR([Invalid value for --with-included-regex: $with_included_regex]) ;; esac if test $ac_use_included_regex = yes; then AC_DEFINE([_REGEX_INCLUDE_LIMITS_H], [1], [Define if you want to include , so that it consistently overrides 's RE_DUP_MAX.]) AC_DEFINE([_REGEX_LARGE_OFFSETS], [1], [Define if you want regoff_t to be at least as wide POSIX requires.]) AC_DEFINE([re_syntax_options], [rpl_re_syntax_options], [Define to rpl_re_syntax_options if the replacement should be used.]) AC_DEFINE([re_set_syntax], [rpl_re_set_syntax], [Define to rpl_re_set_syntax if the replacement should be used.]) AC_DEFINE([re_compile_pattern], [rpl_re_compile_pattern], [Define to rpl_re_compile_pattern if the replacement should be used.]) AC_DEFINE([re_compile_fastmap], [rpl_re_compile_fastmap], [Define to rpl_re_compile_fastmap if the replacement should be used.]) AC_DEFINE([re_search], [rpl_re_search], [Define to rpl_re_search if the replacement should be used.]) AC_DEFINE([re_search_2], [rpl_re_search_2], [Define to rpl_re_search_2 if the replacement should be used.]) AC_DEFINE([re_match], [rpl_re_match], [Define to rpl_re_match if the replacement should be used.]) AC_DEFINE([re_match_2], [rpl_re_match_2], [Define to rpl_re_match_2 if the replacement should be used.]) AC_DEFINE([re_set_registers], [rpl_re_set_registers], [Define to rpl_re_set_registers if the replacement should be used.]) AC_DEFINE([re_comp], [rpl_re_comp], [Define to rpl_re_comp if the replacement should be used.]) AC_DEFINE([re_exec], [rpl_re_exec], [Define to rpl_re_exec if the replacement should be used.]) AC_DEFINE([regcomp], [rpl_regcomp], [Define to rpl_regcomp if the replacement should be used.]) AC_DEFINE([regexec], [rpl_regexec], [Define to rpl_regexec if the replacement should be used.]) AC_DEFINE([regerror], [rpl_regerror], [Define to rpl_regerror if the replacement should be used.]) AC_DEFINE([regfree], [rpl_regfree], [Define to rpl_regfree if the replacement should be used.]) fi ]) # Prerequisites of lib/regex.c and lib/regex_internal.c. AC_DEFUN([gl_PREREQ_REGEX], [ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([AC_C_INLINE]) AC_REQUIRE([AC_C_RESTRICT]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) AC_REQUIRE([gl_EEMALLOC]) AC_REQUIRE([gl_GLIBC21]) AC_CHECK_HEADERS([libintl.h]) AC_CHECK_FUNCS_ONCE([isblank iswctype]) AC_CHECK_DECLS([isblank], [], [], [[#include ]]) ]) # setlocale_null.m4 serial 2 dnl Copyright (C) 2019-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_SETLOCALE_NULL], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_PTHREADLIB]) AC_CHECK_HEADERS_ONCE([threads.h]) AC_CACHE_CHECK([whether setlocale (LC_ALL, NULL) is multithread-safe], [gl_cv_func_setlocale_null_all_mtsafe], [case "$host_os" in # Guess no on musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin. *-musl* | darwin* | freebsd* | netbsd* | openbsd* | aix* | haiku* | cygwin*) gl_cv_func_setlocale_null_all_mtsafe=no ;; # Guess yes on glibc, HP-UX, IRIX, Solaris, native Windows. *-gnu* | gnu* | hpux* | irix* | solaris* | mingw*) gl_cv_func_setlocale_null_all_mtsafe=yes ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_setlocale_null_all_mtsafe="$gl_cross_guess_normal" ;; esac ]) dnl On platforms without multithreading, there is no issue. case "$host_os" in mingw*) ;; *) if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then gl_cv_func_setlocale_null_all_mtsafe="trivially yes" fi ;; esac case "$gl_cv_func_setlocale_null_all_mtsafe" in *yes) SETLOCALE_NULL_ALL_MTSAFE=1 ;; *) SETLOCALE_NULL_ALL_MTSAFE=0 ;; esac AC_DEFINE_UNQUOTED([SETLOCALE_NULL_ALL_MTSAFE], [$SETLOCALE_NULL_ALL_MTSAFE], [Define to 1 if setlocale (LC_ALL, NULL) is multithread-safe.]) dnl This is about a single category (not LC_ALL). AC_CACHE_CHECK([whether setlocale (category, NULL) is multithread-safe], [gl_cv_func_setlocale_null_one_mtsafe], [case "$host_os" in # Guess no on OpenBSD, AIX. openbsd* | aix*) gl_cv_func_setlocale_null_one_mtsafe=no ;; # Guess yes on glibc, musl libc, macOS, FreeBSD, NetBSD, HP-UX, IRIX, Solaris, Haiku, Cygwin, native Windows. *-gnu* | gnu* | *-musl* | darwin* | freebsd* | netbsd* | hpux* | irix* | solaris* | haiku* | cygwin* | mingw*) gl_cv_func_setlocale_null_one_mtsafe=yes ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_setlocale_null_one_mtsafe="$gl_cross_guess_normal" ;; esac ]) dnl On platforms without multithreading, there is no issue. case "$host_os" in mingw*) ;; *) if test $gl_pthread_api = no && test $ac_cv_header_threads_h = no; then gl_cv_func_setlocale_null_one_mtsafe="trivially yes" fi ;; esac case "$gl_cv_func_setlocale_null_one_mtsafe" in *yes) SETLOCALE_NULL_ONE_MTSAFE=1 ;; *) SETLOCALE_NULL_ONE_MTSAFE=0 ;; esac AC_DEFINE_UNQUOTED([SETLOCALE_NULL_ONE_MTSAFE], [$SETLOCALE_NULL_ONE_MTSAFE], [Define to 1 if setlocale (category, NULL) is multithread-safe.]) dnl Determine link dependencies of lib/setlocale_null.c and lib/setlocale-lock.c. if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then case "$host_os" in mingw*) LIB_SETLOCALE_NULL= ;; *) gl_WEAK_SYMBOLS case "$gl_cv_have_weak" in *yes) LIB_SETLOCALE_NULL= ;; *) LIB_SETLOCALE_NULL="$LIBPTHREAD" ;; esac ;; esac else LIB_SETLOCALE_NULL= fi dnl LIB_SETLOCALE_NULL is expected to be '-pthread' or '-lpthread' on AIX dnl with gcc or xlc, and empty otherwise. AC_SUBST([LIB_SETLOCALE_NULL]) ]) # Prerequisites of lib/setlocale-lock.c. AC_DEFUN([gl_PREREQ_SETLOCALE_LOCK], [ gl_VISIBILITY ]) # sigaction.m4 serial 7 dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Determine if sigaction interface is present. AC_DEFUN([gl_SIGACTION], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_CHECK_FUNCS_ONCE([sigaction]) if test $ac_cv_func_sigaction = yes; then AC_CHECK_MEMBERS([struct sigaction.sa_sigaction], , , [[#include ]]) if test $ac_cv_member_struct_sigaction_sa_sigaction = no; then HAVE_STRUCT_SIGACTION_SA_SIGACTION=0 fi else HAVE_SIGACTION=0 fi ]) # Prerequisites of the part of lib/signal.in.h and of lib/sigaction.c. AC_DEFUN([gl_PREREQ_SIGACTION], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_REQUIRE([AC_C_RESTRICT]) AC_REQUIRE([AC_TYPE_UID_T]) AC_REQUIRE([gl_PREREQ_SIG_HANDLER_H]) AC_CHECK_FUNCS_ONCE([sigaltstack siginterrupt]) AC_CHECK_TYPES([siginfo_t], [], [], [[ #include ]]) if test $ac_cv_type_siginfo_t = no; then HAVE_SIGINFO_T=0 fi ]) # Prerequisites of lib/sig-handler.h. AC_DEFUN([gl_PREREQ_SIG_HANDLER_H], [:]) # signal_h.m4 serial 19 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_SIGNAL_H], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T]) gl_NEXT_HEADERS([signal.h]) # AIX declares sig_atomic_t to already include volatile, and C89 compilers # then choke on 'volatile sig_atomic_t'. C99 requires that it compile. AC_CHECK_TYPE([volatile sig_atomic_t], [], [HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0], [[ #include ]]) dnl Ensure the type pid_t gets defined. AC_REQUIRE([AC_TYPE_PID_T]) AC_REQUIRE([AC_TYPE_UID_T]) dnl Persuade glibc to define sighandler_t. AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_CHECK_TYPE([sighandler_t], [], [HAVE_SIGHANDLER_T=0], [[ #include ]]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [pthread_sigmask sigaction sigaddset sigdelset sigemptyset sigfillset sigismember sigpending sigprocmask]) AC_REQUIRE([AC_C_RESTRICT]) ]) AC_DEFUN([gl_CHECK_TYPE_SIGSET_T], [ AC_CHECK_TYPES([sigset_t], [gl_cv_type_sigset_t=yes], [gl_cv_type_sigset_t=no], [[ #include /* Mingw defines sigset_t not in , but in . */ #include ]]) if test $gl_cv_type_sigset_t != yes; then HAVE_SIGSET_T=0 fi ]) AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_SIGNAL_H_DEFAULTS], [ GNULIB_PTHREAD_SIGMASK=0; AC_SUBST([GNULIB_PTHREAD_SIGMASK]) GNULIB_RAISE=0; AC_SUBST([GNULIB_RAISE]) GNULIB_SIGNAL_H_SIGPIPE=0; AC_SUBST([GNULIB_SIGNAL_H_SIGPIPE]) GNULIB_SIGPROCMASK=0; AC_SUBST([GNULIB_SIGPROCMASK]) GNULIB_SIGACTION=0; AC_SUBST([GNULIB_SIGACTION]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_POSIX_SIGNALBLOCKING=1; AC_SUBST([HAVE_POSIX_SIGNALBLOCKING]) HAVE_PTHREAD_SIGMASK=1; AC_SUBST([HAVE_PTHREAD_SIGMASK]) HAVE_RAISE=1; AC_SUBST([HAVE_RAISE]) HAVE_SIGSET_T=1; AC_SUBST([HAVE_SIGSET_T]) HAVE_SIGINFO_T=1; AC_SUBST([HAVE_SIGINFO_T]) HAVE_SIGACTION=1; AC_SUBST([HAVE_SIGACTION]) HAVE_STRUCT_SIGACTION_SA_SIGACTION=1; AC_SUBST([HAVE_STRUCT_SIGACTION_SA_SIGACTION]) HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1; AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T]) HAVE_SIGHANDLER_T=1; AC_SUBST([HAVE_SIGHANDLER_T]) REPLACE_PTHREAD_SIGMASK=0; AC_SUBST([REPLACE_PTHREAD_SIGMASK]) REPLACE_RAISE=0; AC_SUBST([REPLACE_RAISE]) ]) # signalblocking.m4 serial 14 dnl Copyright (C) 2001-2002, 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Determine available signal blocking primitives. Three different APIs exist: # 1) POSIX: sigemptyset, sigaddset, sigprocmask # 2) SYSV: sighold, sigrelse # 3) BSD: sigblock, sigsetmask # For simplicity, here we check only for the POSIX signal blocking. AC_DEFUN([gl_SIGNALBLOCKING], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T]) if test $gl_cv_type_sigset_t = yes; then AC_CHECK_FUNC([sigprocmask], [gl_cv_func_sigprocmask=1]) fi if test -z "$gl_cv_func_sigprocmask"; then HAVE_POSIX_SIGNALBLOCKING=0 fi ]) # Prerequisites of lib/sigprocmask.c. AC_DEFUN([gl_PREREQ_SIGPROCMASK], [:]) # signbit.m4 serial 19 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_SIGNBIT], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_CACHE_CHECK([for signbit macro], [gl_cv_func_signbit], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include /* If signbit is defined as a function, don't use it, since calling it for 'float' or 'long double' arguments would involve conversions. If signbit is not declared at all but exists as a library function, don't use it, since the prototype may not match. If signbit is not declared at all but exists as a compiler built-in, don't use it, since it's preferable to use __builtin_signbit* (no warnings, no conversions). */ #ifndef signbit # error "signbit should be a macro" #endif #include ]gl_SIGNBIT_TEST_PROGRAM ])], [gl_cv_func_signbit=yes], [gl_cv_func_signbit=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_signbit="guessing yes" ;; # Guess yes on musl systems. *-musl*) gl_cv_func_signbit="guessing yes" ;; # Guess yes on native Windows. mingw*) gl_cv_func_signbit="guessing yes" ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_signbit="$gl_cross_guess_normal" ;; esac ]) ]) dnl GCC 4.0 and newer provides three built-ins for signbit. dnl They can be used without warnings, also in C++, regardless of . dnl But they may expand to calls to functions, which may or may not be in dnl libc. AC_CACHE_CHECK([for signbit compiler built-ins], [gl_cv_func_signbit_gcc], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #if __GNUC__ >= 4 # define signbit(x) \ (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \ sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \ __builtin_signbitf (x)) #else # error "signbit should be three compiler built-ins" #endif #include ]gl_SIGNBIT_TEST_PROGRAM ])], [gl_cv_func_signbit_gcc=yes], [gl_cv_func_signbit_gcc=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_signbit_gcc="guessing yes" ;; # Guess yes on musl systems. *-musl*) gl_cv_func_signbit_gcc="guessing yes" ;; # Guess yes on mingw, no on MSVC. mingw*) if test -n "$GCC"; then gl_cv_func_signbit_gcc="guessing yes" else gl_cv_func_signbit_gcc="guessing no" fi ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_signbit_gcc="$gl_cross_guess_normal" ;; esac ]) ]) dnl Use the compiler built-ins whenever possible, because they are more dnl efficient than the system library functions (if they exist). case "$gl_cv_func_signbit_gcc" in *yes) REPLACE_SIGNBIT_USING_GCC=1 ;; *) case "$gl_cv_func_signbit" in *yes) ;; *) dnl REPLACE_SIGNBIT=1 makes sure the signbit[fdl] functions get built. REPLACE_SIGNBIT=1 ;; esac ;; esac dnl On Solaris 10, with CC in C++ mode, signbit is not available although dnl is with cc in C mode. This cannot be worked around by defining dnl _XOPEN_SOURCE=600, because the latter does not work in C++ mode on dnl Solaris 11.0. Therefore use the replacement functions on Solaris. case "$host_os" in solaris*) REPLACE_SIGNBIT=1 ;; esac if test $REPLACE_SIGNBIT = 1; then gl_FLOAT_SIGN_LOCATION gl_DOUBLE_SIGN_LOCATION gl_LONG_DOUBLE_SIGN_LOCATION if test "$gl_cv_cc_float_signbit" = unknown; then dnl Test whether copysignf() is declared. AC_CHECK_DECLS([copysignf], , , [[#include ]]) if test "$ac_cv_have_decl_copysignf" = yes; then dnl Test whether copysignf() can be used without libm. AC_CACHE_CHECK([whether copysignf can be used without linking with libm], [gl_cv_func_copysignf_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include float x, y;]], [[return copysignf (x, y) < 0;]])], [gl_cv_func_copysignf_no_libm=yes], [gl_cv_func_copysignf_no_libm=no]) ]) if test $gl_cv_func_copysignf_no_libm = yes; then AC_DEFINE([HAVE_COPYSIGNF_IN_LIBC], [1], [Define if the copysignf function is declared in and available in libc.]) fi fi fi if test "$gl_cv_cc_double_signbit" = unknown; then dnl Test whether copysign() is declared. AC_CHECK_DECLS([copysign], , , [[#include ]]) if test "$ac_cv_have_decl_copysign" = yes; then dnl Test whether copysign() can be used without libm. AC_CACHE_CHECK([whether copysign can be used without linking with libm], [gl_cv_func_copysign_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include double x, y;]], [[return copysign (x, y) < 0;]])], [gl_cv_func_copysign_no_libm=yes], [gl_cv_func_copysign_no_libm=no]) ]) if test $gl_cv_func_copysign_no_libm = yes; then AC_DEFINE([HAVE_COPYSIGN_IN_LIBC], [1], [Define if the copysign function is declared in and available in libc.]) fi fi fi if test "$gl_cv_cc_long_double_signbit" = unknown; then dnl Test whether copysignl() is declared. AC_CHECK_DECLS([copysignl], , , [[#include ]]) if test "$ac_cv_have_decl_copysignl" = yes; then dnl Test whether copysignl() can be used without libm. AC_CACHE_CHECK([whether copysignl can be used without linking with libm], [gl_cv_func_copysignl_no_libm], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include long double x, y;]], [[return copysignl (x, y) < 0;]])], [gl_cv_func_copysignl_no_libm=yes], [gl_cv_func_copysignl_no_libm=no]) ]) if test $gl_cv_func_copysignl_no_libm = yes; then AC_DEFINE([HAVE_COPYSIGNL_IN_LIBC], [1], [Define if the copysignl function is declared in and available in libc.]) fi fi fi fi ]) AC_DEFUN([gl_SIGNBIT_TEST_PROGRAM], [[ /* Global variables. Needed because GCC 4 constant-folds __builtin_signbitl (literal) but cannot constant-fold __builtin_signbitl (variable). */ float vf; double vd; long double vl; int main () { /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0. So we use -p0f and -p0d instead. */ float p0f = 0.0f; float m0f = -p0f; double p0d = 0.0; double m0d = -p0d; /* On HP-UX 10.20, negating 0.0L does not yield -0.0L. So we use another constant expression instead. But that expression does not work on other platforms, such as when cross-compiling to PowerPC on Mac OS X 10.5. */ long double p0l = 0.0L; #if defined __hpux || defined __sgi long double m0l = -LDBL_MIN * LDBL_MIN; #else long double m0l = -p0l; #endif int result = 0; if (signbit (vf)) /* link check */ vf++; { float plus_inf = 1.0f / p0f; float minus_inf = -1.0f / p0f; if (!(!signbit (255.0f) && signbit (-255.0f) && !signbit (p0f) && (memcmp (&m0f, &p0f, sizeof (float)) == 0 || signbit (m0f)) && !signbit (plus_inf) && signbit (minus_inf))) result |= 1; } if (signbit (vd)) /* link check */ vd++; { double plus_inf = 1.0 / p0d; double minus_inf = -1.0 / p0d; if (!(!signbit (255.0) && signbit (-255.0) && !signbit (p0d) && (memcmp (&m0d, &p0d, sizeof (double)) == 0 || signbit (m0d)) && !signbit (plus_inf) && signbit (minus_inf))) result |= 2; } if (signbit (vl)) /* link check */ vl++; { long double plus_inf = 1.0L / p0l; long double minus_inf = -1.0L / p0l; if (signbit (255.0L)) result |= 4; if (!signbit (-255.0L)) result |= 4; if (signbit (p0l)) result |= 8; if (!(memcmp (&m0l, &p0l, sizeof (long double)) == 0 || signbit (m0l))) result |= 16; if (signbit (plus_inf)) result |= 32; if (!signbit (minus_inf)) result |= 64; } return result; } ]]) AC_DEFUN([gl_FLOAT_SIGN_LOCATION], [ gl_FLOATTYPE_SIGN_LOCATION([float], [gl_cv_cc_float_signbit], [f], [FLT]) ]) AC_DEFUN([gl_DOUBLE_SIGN_LOCATION], [ gl_FLOATTYPE_SIGN_LOCATION([double], [gl_cv_cc_double_signbit], [], [DBL]) ]) AC_DEFUN([gl_LONG_DOUBLE_SIGN_LOCATION], [ gl_FLOATTYPE_SIGN_LOCATION([long double], [gl_cv_cc_long_double_signbit], [L], [LDBL]) ]) AC_DEFUN([gl_FLOATTYPE_SIGN_LOCATION], [ AC_CACHE_CHECK([where to find the sign bit in a '$1'], [$2], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include #define NWORDS \ ((sizeof ($1) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) typedef union { $1 value; unsigned int word[NWORDS]; } memory_float; static memory_float plus = { 1.0$3 }; static memory_float minus = { -1.0$3 }; int main () { size_t j, k, i; unsigned int m; FILE *fp = fopen ("conftest.out", "w"); if (fp == NULL) return 1; /* Find the different bit. */ k = 0; m = 0; for (j = 0; j < NWORDS; j++) { unsigned int x = plus.word[j] ^ minus.word[j]; if ((x & (x - 1)) || (x && m)) { /* More than one bit difference. */ fprintf (fp, "unknown"); fclose (fp); return 2; } if (x) { k = j; m = x; } } if (m == 0) { /* No difference. */ fprintf (fp, "unknown"); fclose (fp); return 3; } /* Now m = plus.word[k] ^ ~minus.word[k]. */ if (plus.word[k] & ~minus.word[k]) { /* Oh? The sign bit is set in the positive and cleared in the negative numbers? */ fprintf (fp, "unknown"); fclose (fp); return 4; } for (i = 0; ; i++) if ((m >> i) & 1) break; fprintf (fp, "word %d bit %d", (int) k, (int) i); if (fclose (fp) != 0) return 5; return 0; } ]])], [$2=`cat conftest.out`], [$2="unknown"], [ dnl When cross-compiling, we don't know. It depends on the dnl ABI and compiler version. There are too many cases. $2="unknown" ]) rm -f conftest.out ]) case "$]$2[" in word*bit*) word=`echo "$]$2[" | sed -e 's/word //' -e 's/ bit.*//'` bit=`echo "$]$2[" | sed -e 's/word.*bit //'` AC_DEFINE_UNQUOTED([$4][_SIGNBIT_WORD], [$word], [Define as the word index where to find the sign of '$1'.]) AC_DEFINE_UNQUOTED([$4][_SIGNBIT_BIT], [$bit], [Define as the bit index in the word where to find the sign of '$1'.]) ;; esac ]) # Expands to code that defines a function signbitf(float). # It extracts the sign bit of a non-NaN value. AC_DEFUN([gl_FLOAT_SIGNBIT_CODE], [ gl_FLOATTYPE_SIGNBIT_CODE([float], [f], [f]) ]) # Expands to code that defines a function signbitd(double). # It extracts the sign bit of a non-NaN value. AC_DEFUN([gl_DOUBLE_SIGNBIT_CODE], [ gl_FLOATTYPE_SIGNBIT_CODE([double], [d], []) ]) # Expands to code that defines a function signbitl(long double). # It extracts the sign bit of a non-NaN value. AC_DEFUN([gl_LONG_DOUBLE_SIGNBIT_CODE], [ gl_FLOATTYPE_SIGNBIT_CODE([long double], [l], [L]) ]) AC_DEFUN([gl_FLOATTYPE_SIGNBIT_CODE], [[ static int signbit$2 ($1 value) { typedef union { $1 f; unsigned char b[sizeof ($1)]; } float_union; static float_union plus_one = { 1.0$3 }; /* unused bits are zero here */ static float_union minus_one = { -1.0$3 }; /* unused bits are zero here */ /* Compute the sign bit mask as the XOR of plus_one and minus_one. */ float_union u; unsigned int i; u.f = value; for (i = 0; i < sizeof ($1); i++) if (u.b[i] & (plus_one.b[i] ^ minus_one.b[i])) return 1; return 0; } ]]) # size_max.m4 serial 11 dnl Copyright (C) 2003, 2005-2006, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_PREREQ([2.61]) AC_DEFUN([gl_SIZE_MAX], [ AC_CHECK_HEADERS([stdint.h]) dnl First test whether the system already has SIZE_MAX. AC_CACHE_CHECK([for SIZE_MAX], [gl_cv_size_max], [ gl_cv_size_max= AC_EGREP_CPP([Found it], [ #include #if HAVE_STDINT_H #include #endif #ifdef SIZE_MAX Found it #endif ], [gl_cv_size_max=yes]) if test -z "$gl_cv_size_max"; then dnl Define it ourselves. Here we assume that the type 'size_t' is not wider dnl than the type 'unsigned long'. Try hard to find a definition that can dnl be used in a preprocessor #if, i.e. doesn't contain a cast. AC_COMPUTE_INT([size_t_bits_minus_1], [sizeof (size_t) * CHAR_BIT - 1], [#include #include ], [size_t_bits_minus_1=]) AC_COMPUTE_INT([fits_in_uint], [sizeof (size_t) <= sizeof (unsigned int)], [#include ], [fits_in_uint=]) if test -n "$size_t_bits_minus_1" && test -n "$fits_in_uint"; then if test $fits_in_uint = 1; then dnl Even though SIZE_MAX fits in an unsigned int, it must be of type dnl 'unsigned long' if the type 'size_t' is the same as 'unsigned long'. AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include extern size_t foo; extern unsigned long foo; ]], [[]])], [fits_in_uint=0]) fi dnl We cannot use 'expr' to simplify this expression, because 'expr' dnl works only with 'long' integers in the host environment, while we dnl might be cross-compiling from a 32-bit platform to a 64-bit platform. if test $fits_in_uint = 1; then gl_cv_size_max="(((1U << $size_t_bits_minus_1) - 1) * 2 + 1)" else gl_cv_size_max="(((1UL << $size_t_bits_minus_1) - 1) * 2 + 1)" fi else dnl Shouldn't happen, but who knows... gl_cv_size_max='((size_t)~(size_t)0)' fi fi ]) if test "$gl_cv_size_max" != yes; then AC_DEFINE_UNQUOTED([SIZE_MAX], [$gl_cv_size_max], [Define as the maximum value of type 'size_t', if the system doesn't define it.]) fi dnl Don't redefine SIZE_MAX in config.h if config.h is re-included after dnl . Remember that the #undef in AH_VERBATIM gets replaced with dnl #define by AC_DEFINE_UNQUOTED. AH_VERBATIM([SIZE_MAX], [/* Define as the maximum value of type 'size_t', if the system doesn't define it. */ #ifndef SIZE_MAX # undef SIZE_MAX #endif]) ]) # snprintf-posix.m4 serial 14 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_SNPRINTF_POSIX], [ AC_REQUIRE([gl_PRINTF_SIZES_C99]) AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) AC_REQUIRE([gl_PRINTF_INFINITE]) AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_A]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_F]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_N]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS]) AC_REQUIRE([gl_PRINTF_POSITIONS]) AC_REQUIRE([gl_PRINTF_FLAG_GROUPING]) AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST]) AC_REQUIRE([gl_PRINTF_FLAG_ZERO]) AC_REQUIRE([gl_PRINTF_PRECISION]) AC_REQUIRE([gl_PRINTF_ENOMEM]) gl_cv_func_snprintf_posix=no AC_CHECK_FUNCS([snprintf]) if test $ac_cv_func_snprintf = yes; then gl_SNPRINTF_TRUNCATION_C99 gl_SNPRINTF_RETVAL_C99 gl_SNPRINTF_DIRECTIVE_N gl_SNPRINTF_SIZE1 gl_VSNPRINTF_ZEROSIZE_C99 case "$gl_cv_func_printf_sizes_c99" in *yes) case "$gl_cv_func_printf_long_double" in *yes) case "$gl_cv_func_printf_infinite" in *yes) case "$gl_cv_func_printf_infinite_long_double" in *yes) case "$gl_cv_func_printf_directive_a" in *yes) case "$gl_cv_func_printf_directive_f" in *yes) case "$gl_cv_func_printf_directive_n" in *yes) case "$gl_cv_func_printf_directive_ls" in *yes) case "$gl_cv_func_printf_positions" in *yes) case "$gl_cv_func_printf_flag_grouping" in *yes) case "$gl_cv_func_printf_flag_leftadjust" in *yes) case "$gl_cv_func_printf_flag_zero" in *yes) case "$gl_cv_func_printf_precision" in *yes) case "$gl_cv_func_printf_enomem" in *yes) case "$gl_cv_func_snprintf_truncation_c99" in *yes) case "$gl_cv_func_snprintf_retval_c99" in *yes) case "$gl_cv_func_snprintf_directive_n" in *yes) case "$gl_cv_func_snprintf_size1" in *yes) case "$gl_cv_func_vsnprintf_zerosize_c99" in *yes) # snprintf exists and is # already POSIX compliant. gl_cv_func_snprintf_posix=yes ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac fi if test $gl_cv_func_snprintf_posix = no; then gl_PREREQ_VASNPRINTF_LONG_DOUBLE gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE gl_PREREQ_VASNPRINTF_DIRECTIVE_A gl_PREREQ_VASNPRINTF_DIRECTIVE_F gl_PREREQ_VASNPRINTF_DIRECTIVE_LS gl_PREREQ_VASNPRINTF_FLAG_GROUPING gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST gl_PREREQ_VASNPRINTF_FLAG_ZERO gl_PREREQ_VASNPRINTF_PRECISION gl_PREREQ_VASNPRINTF_ENOMEM gl_REPLACE_VASNPRINTF gl_REPLACE_SNPRINTF fi ]) # snprintf.m4 serial 7 dnl Copyright (C) 2002-2004, 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Libintl 0.17 will replace snprintf only if it does not support %1$s, dnl but defers to any gnulib snprintf replacements. Therefore, gnulib dnl must guarantee that the decision for replacing snprintf is a superset dnl of the reasons checked by libintl. AC_DEFUN([gl_FUNC_SNPRINTF], [ AC_REQUIRE([gl_STDIO_H_DEFAULTS]) gl_cv_func_snprintf_usable=no AC_CHECK_FUNCS([snprintf]) if test $ac_cv_func_snprintf = yes; then gl_SNPRINTF_SIZE1 case "$gl_cv_func_snprintf_size1" in *yes) gl_SNPRINTF_RETVAL_C99 case "$gl_cv_func_snprintf_retval_c99" in *yes) gl_PRINTF_POSITIONS case "$gl_cv_func_printf_positions" in *yes) gl_cv_func_snprintf_usable=yes ;; esac ;; esac ;; esac fi if test $gl_cv_func_snprintf_usable = no; then gl_REPLACE_SNPRINTF fi AC_CHECK_DECLS_ONCE([snprintf]) if test $ac_cv_have_decl_snprintf = no; then HAVE_DECL_SNPRINTF=0 fi ]) AC_DEFUN([gl_REPLACE_SNPRINTF], [ AC_REQUIRE([gl_STDIO_H_DEFAULTS]) AC_LIBOBJ([snprintf]) if test $ac_cv_func_snprintf = yes; then REPLACE_SNPRINTF=1 else AC_CHECK_DECLS_ONCE([snprintf]) if test $ac_cv_have_decl_snprintf = yes; then dnl If the function is declared but does not appear to exist, it may be dnl defined as an inline function. In order to avoid a conflict, we have dnl to define rpl_snprintf, not snprintf. REPLACE_SNPRINTF=1 fi fi gl_PREREQ_SNPRINTF ]) # Prerequisites of lib/snprintf.c. AC_DEFUN([gl_PREREQ_SNPRINTF], [:]) # ssize_t.m4 serial 5 (gettext-0.18.2) dnl Copyright (C) 2001-2003, 2006, 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Test whether ssize_t is defined. AC_DEFUN([gt_TYPE_SSIZE_T], [ AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[int x = sizeof (ssize_t *) + sizeof (ssize_t); return !x;]])], [gt_cv_ssize_t=yes], [gt_cv_ssize_t=no])]) if test $gt_cv_ssize_t = no; then AC_DEFINE([ssize_t], [int], [Define as a signed type of the same size as size_t.]) fi ]) # Checks for stat-related time functions. # Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2020 Free Software # Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. dnl From Paul Eggert. # st_atim.tv_nsec - Linux, Solaris, Cygwin # st_atimespec.tv_nsec - FreeBSD, NetBSD, if ! defined _POSIX_SOURCE # st_atimensec - FreeBSD, NetBSD, if defined _POSIX_SOURCE # st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1) # st_birthtimespec - FreeBSD, NetBSD (hidden on OpenBSD 3.9, anyway) # st_birthtim - Cygwin 1.7.0+ AC_DEFUN([gl_STAT_TIME], [ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_HEADERS_ONCE([sys/time.h]) AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec], [AC_CACHE_CHECK([whether struct stat.st_atim is of type struct timespec], [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( [[ #include #include #if HAVE_SYS_TIME_H # include #endif #include struct timespec ts; struct stat st; ]], [[ st.st_atim = ts; ]])], [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=yes], [ac_cv_typeof_struct_stat_st_atim_is_struct_timespec=no])]) if test $ac_cv_typeof_struct_stat_st_atim_is_struct_timespec = yes; then AC_DEFINE([TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC], [1], [Define to 1 if the type of the st_atim member of a struct stat is struct timespec.]) fi], [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [], [AC_CHECK_MEMBERS([struct stat.st_atimensec], [], [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [], [], [#include #include ])], [#include #include ])], [#include #include ])], [#include #include ]) ]) # Check for st_birthtime, a feature from UFS2 (FreeBSD, NetBSD, OpenBSD, etc.) # and NTFS (Cygwin). # There was a time when this field was named st_createtime (21 June # 2002 to 16 July 2002) But that window is very small and applied only # to development code, so systems still using that configuration are # not supported. See revisions 1.10 and 1.11 of FreeBSD's # src/sys/ufs/ufs/dinode.h. # AC_DEFUN([gl_STAT_BIRTHTIME], [ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_HEADERS_ONCE([sys/time.h]) AC_CHECK_MEMBERS([struct stat.st_birthtimespec.tv_nsec], [], [AC_CHECK_MEMBERS([struct stat.st_birthtimensec], [], [AC_CHECK_MEMBERS([struct stat.st_birthtim.tv_nsec], [], [], [#include #include ])], [#include #include ])], [#include #include ]) ]) # serial 16 # Copyright (C) 2009-2020 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_STAT], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) AC_CHECK_FUNCS_ONCE([lstat]) case "$host_os" in mingw*) dnl On this platform, the original stat() returns st_atime, st_mtime, dnl st_ctime values that are affected by the time zone. REPLACE_STAT=1 ;; *) dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/"). dnl (For mingw, this is due to a broken stat() override in libmingwex.a.) dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/"). AC_CACHE_CHECK([whether stat handles trailing slashes on files], [gl_cv_func_stat_file_slash], [touch conftest.tmp # Assume that if we have lstat, we can also check symlinks. if test $ac_cv_func_lstat = yes; then ln -s conftest.tmp conftest.lnk fi AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[int result = 0; struct stat st; if (!stat ("conftest.tmp/", &st)) result |= 1; #if HAVE_LSTAT if (!stat ("conftest.lnk/", &st)) result |= 2; #endif return result; ]])], [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no], [case "$host_os" in # Guess yes on Linux systems. linux-* | linux) gl_cv_func_stat_file_slash="guessing yes" ;; # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_stat_file_slash="guessing yes" ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_stat_file_slash="$gl_cross_guess_normal" ;; esac ]) rm -f conftest.tmp conftest.lnk]) case $gl_cv_func_stat_file_slash in *no) REPLACE_STAT=1 AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs help when passed a file name with a trailing slash]);; esac case $host_os in dnl Solaris stat can return a negative tv_nsec. solaris*) REPLACE_FSTAT=1 ;; esac ;; esac ]) # Prerequisites of lib/stat.c and lib/stat-w32.c. AC_DEFUN([gl_PREREQ_STAT], [ AC_REQUIRE([gl_HEADER_SYS_STAT_H]) : ]) # Prefer GNU C11 and C++11 to earlier versions. -*- coding: utf-8 -*- # This implementation is taken from GNU Autoconf lib/autoconf/c.m4 # commit 017d5ddd82854911f0119691d91ea8a1438824d6 # dated Sun Apr 3 13:57:17 2016 -0700 # This implementation will be obsolete once we can assume Autoconf 2.70 # or later is installed everywhere a Gnulib program might be developed. # Copyright (C) 2001-2020 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # Written by David MacKenzie, with help from # Akim Demaille, Paul Eggert, # François Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, # Roland McGrath, Noah Friedman, david d zuhn, and many others. # AC_PROG_CC([COMPILER ...]) # -------------------------- # COMPILER ... is a space separated list of C compilers to search for. # This just gives the user an opportunity to specify an alternative # search list for the C compiler. AC_DEFUN_ONCE([AC_PROG_CC], [AC_LANG_PUSH(C)dnl AC_ARG_VAR([CC], [C compiler command])dnl AC_ARG_VAR([CFLAGS], [C compiler flags])dnl _AC_ARG_VAR_LDFLAGS()dnl _AC_ARG_VAR_LIBS()dnl _AC_ARG_VAR_CPPFLAGS()dnl m4_ifval([$1], [AC_CHECK_TOOLS(CC, [$1])], [AC_CHECK_TOOL(CC, gcc) if test -z "$CC"; then dnl Here we want: dnl AC_CHECK_TOOL(CC, cc) dnl but without the check for a tool without the prefix. dnl Until the check is removed from there, copy the code: if test -n "$ac_tool_prefix"; then AC_CHECK_PROG(CC, [${ac_tool_prefix}cc], [${ac_tool_prefix}cc]) fi fi if test -z "$CC"; then AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) fi if test -z "$CC"; then AC_CHECK_TOOLS(CC, cl.exe) fi if test -z "$CC"; then AC_CHECK_TOOL(CC, clang) fi ]) test -z "$CC" && AC_MSG_FAILURE([no acceptable C compiler found in \$PATH]) # Provide some information about the compiler. _AS_ECHO_LOG([checking for _AC_LANG compiler version]) set X $ac_compile ac_compiler=$[2] for ac_option in --version -v -V -qversion -version; do m4_ifdef([_AC_DO_LIMIT],[_AC_DO_LIMIT],[_AC_DO])([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD]) done m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl _AC_LANG_COMPILER_GNU if test $ac_compiler_gnu = yes; then GCC=yes else GCC= fi _AC_PROG_CC_G dnl dnl Set ac_prog_cc_stdc to the supported C version. dnl Also set the documented variable ac_cv_prog_cc_stdc; dnl its name was chosen when it was cached, but it is no longer cached. _AC_PROG_CC_C11([ac_prog_cc_stdc=c11 ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11], [_AC_PROG_CC_C99([ac_prog_cc_stdc=c99 ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99], [_AC_PROG_CC_C89([ac_prog_cc_stdc=c89 ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89], [ac_prog_cc_stdc=no ac_cv_prog_cc_stdc=no])])]) dnl AC_LANG_POP(C)dnl ])# AC_PROG_CC # AC_PROG_CXX([LIST-OF-COMPILERS]) # -------------------------------- # LIST-OF-COMPILERS is a space separated list of C++ compilers to search # for (if not specified, a default list is used). This just gives the # user an opportunity to specify an alternative search list for the C++ # compiler. # aCC HP-UX C++ compiler much better than `CC', so test before. # FCC Fujitsu C++ compiler # KCC KAI C++ compiler # RCC Rational C++ # xlC_r AIX C Set++ (with support for reentrant code) # xlC AIX C Set++ AC_DEFUN([AC_PROG_CXX], [AC_LANG_PUSH(C++)dnl AC_ARG_VAR([CXX], [C++ compiler command])dnl AC_ARG_VAR([CXXFLAGS], [C++ compiler flags])dnl _AC_ARG_VAR_LDFLAGS()dnl _AC_ARG_VAR_LIBS()dnl _AC_ARG_VAR_CPPFLAGS()dnl _AC_ARG_VAR_PRECIOUS([CCC])dnl if test -z "$CXX"; then if test -n "$CCC"; then CXX=$CCC else AC_CHECK_TOOLS(CXX, [m4_default([$1], [g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC clang++])], g++) fi fi # Provide some information about the compiler. _AS_ECHO_LOG([checking for _AC_LANG compiler version]) set X $ac_compile ac_compiler=$[2] for ac_option in --version -v -V -qversion; do m4_ifdef([_AC_DO_LIMIT],[_AC_DO_LIMIT],[_AC_DO])([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD]) done m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl _AC_LANG_COMPILER_GNU if test $ac_compiler_gnu = yes; then GXX=yes else GXX= fi _AC_PROG_CXX_G _AC_PROG_CXX_CXX11([ac_prog_cxx_stdcxx=cxx11 ac_cv_prog_cxx_stdcxx=$ac_cv_prog_cxx_cxx11 ac_cv_prog_cxx_cxx98=$ac_cv_prog_cxx_cxx11], [_AC_PROG_CXX_CXX98([ac_prog_cxx_stdcxx=cxx98 ac_cv_prog_cxx_stdcxx=$ac_cv_prog_cxx_cxx98], [ac_prog_cxx_stdcxx=no ac_cv_prog_cxx_stdcxx=no])]) AC_LANG_POP(C++)dnl ])# AC_PROG_CXX # _AC_C_STD_TRY(STANDARD, TEST-PROLOGUE, TEST-BODY, OPTION-LIST, # ACTION-IF-AVAILABLE, ACTION-IF-UNAVAILABLE) # -------------------------------------------------------------- # Check whether the C compiler accepts features of STANDARD (e.g `c89', `c99') # by trying to compile a program of TEST-PROLOGUE and TEST-BODY. If this fails, # try again with each compiler option in the space-separated OPTION-LIST; if one # helps, append it to CC. If eventually successful, run ACTION-IF-AVAILABLE, # else ACTION-IF-UNAVAILABLE. AC_DEFUN([_AC_C_STD_TRY], [AC_MSG_CHECKING([for $CC option to enable ]m4_translit($1, [c], [C])[ features]) AC_CACHE_VAL(ac_cv_prog_cc_$1, [ac_cv_prog_cc_$1=no ac_save_CC=$CC AC_LANG_CONFTEST([AC_LANG_PROGRAM([$2], [$3])]) for ac_arg in '' $4 do CC="$ac_save_CC $ac_arg" _AC_COMPILE_IFELSE([], [ac_cv_prog_cc_$1=$ac_arg]) test "x$ac_cv_prog_cc_$1" != "xno" && break done rm -f conftest.$ac_ext CC=$ac_save_CC ])# AC_CACHE_VAL ac_prog_cc_stdc_options= case "x$ac_cv_prog_cc_$1" in x) AC_MSG_RESULT([none needed]) ;; xno) AC_MSG_RESULT([unsupported]) ;; *) ac_prog_cc_stdc_options=" $ac_cv_prog_cc_$1" CC=$CC$ac_prog_cc_stdc_options AC_MSG_RESULT([$ac_cv_prog_cc_$1]) ;; esac AS_IF([test "x$ac_cv_prog_cc_$1" != xno], [$5], [$6]) ])# _AC_C_STD_TRY # _AC_C_C99_TEST_HEADER # --------------------- # A C header suitable for testing for C99. AC_DEFUN([_AC_C_C99_TEST_HEADER], [[#include #include #include #include #include #include // Check varargs macros. These examples are taken from C99 6.10.3.5. #define debug(...) fprintf (stderr, __VA_ARGS__) #define showlist(...) puts (#__VA_ARGS__) #define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__)) static void test_varargs_macros (void) { int x = 1234; int y = 5678; debug ("Flag"); debug ("X = %d\n", x); showlist (The first, second, and third items.); report (x>y, "x is %d but y is %d", x, y); } // Check long long types. #define BIG64 18446744073709551615ull #define BIG32 4294967295ul #define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0) #if !BIG_OK your preprocessor is broken; #endif #if BIG_OK #else your preprocessor is broken; #endif static long long int bignum = -9223372036854775807LL; static unsigned long long int ubignum = BIG64; struct incomplete_array { int datasize; double data[]; }; struct named_init { int number; const wchar_t *name; double average; }; typedef const char *ccp; static inline int test_restrict (ccp restrict text) { // See if C++-style comments work. // Iterate through items via the restricted pointer. // Also check for declarations in for loops. for (unsigned int i = 0; *(text+i) != '\0'; ++i) continue; return 0; } // Check varargs and va_copy. static bool test_varargs (const char *format, ...) { va_list args; va_start (args, format); va_list args_copy; va_copy (args_copy, args); const char *str = ""; int number = 0; float fnumber = 0; while (*format) { switch (*format++) { case 's': // string str = va_arg (args_copy, const char *); break; case 'd': // int number = va_arg (args_copy, int); break; case 'f': // float fnumber = va_arg (args_copy, double); break; default: break; } } va_end (args_copy); va_end (args); return *str && number && fnumber; }]])# _AC_C_C99_TEST_HEADER # _AC_C_C99_TEST_BODY # ------------------- # A C body suitable for testing for C99, assuming the corresponding header. AC_DEFUN([_AC_C_C99_TEST_BODY], [[ // Check bool. _Bool success = false; // Check restrict. if (test_restrict ("String literal") == 0) success = true; char *restrict newvar = "Another string"; // Check varargs. success &= test_varargs ("s, d' f .", "string", 65, 34.234); test_varargs_macros (); // Check flexible array members. struct incomplete_array *ia = malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10)); ia->datasize = 10; for (int i = 0; i < ia->datasize; ++i) ia->data[i] = i * 1.234; // Check named initializers. struct named_init ni = { .number = 34, .name = L"Test wide string", .average = 543.34343, }; ni.number = 58; int dynamic_array[ni.number]; dynamic_array[ni.number - 1] = 543; // work around unused variable warnings return (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == 'x' || dynamic_array[ni.number - 1] != 543); ]]) # _AC_PROG_CC_C99 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) # ---------------------------------------------------------------- # If the C compiler is not in ISO C99 mode by default, try to add an # option to output variable CC to make it so. This macro tries # various options that select ISO C99 on some system or another. It # considers the compiler to be in ISO C99 mode if it handles _Bool, # // comments, flexible array members, inline, long long int, mixed # code and declarations, named initialization of structs, restrict, # va_copy, varargs macros, variable declarations in for loops and # variable length arrays. AC_DEFUN([_AC_PROG_CC_C99], [_AC_C_STD_TRY([c99], [_AC_C_C99_TEST_HEADER], [_AC_C_C99_TEST_BODY], dnl Try dnl GCC -std=gnu99 (unused restrictive modes: -std=c99 -std=iso9899:1999) dnl IBM XL C -qlanglvl=extc1x (V12.1; does not pass C11 test) dnl IBM XL C -qlanglvl=extc99 dnl (pre-V12.1; unused restrictive mode: -qlanglvl=stdc99) dnl HP cc -AC99 dnl Intel ICC -std=c99, -c99 (deprecated) dnl IRIX -c99 dnl Solaris -D_STDC_C99= dnl cc's -xc99 option uses linker magic to define the external dnl symbol __xpg4 as if by "int __xpg4 = 1;", which enables C99 dnl behavior for C library functions. This is not wanted here, dnl because it means that a single module compiled with -xc99 dnl alters C runtime behavior for the entire program, not for dnl just the module. Instead, define the (private) symbol dnl _STDC_C99, which suppresses a bogus failure in . dnl The resulting compiler passes the test case here, and that's dnl good enough. For more, please see the thread starting at: dnl https://lists.gnu.org/r/autoconf/2010-12/msg00059.html dnl Tru64 -c99 dnl with extended modes being tried first. [[-std=gnu99 -std=c99 -c99 -AC99 -D_STDC_C99= -qlanglvl=extc1x -qlanglvl=extc99]], [$1], [$2])[]dnl ])# _AC_PROG_CC_C99 # _AC_PROG_CC_C11 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) # ---------------------------------------------------------------- # If the C compiler is not in ISO C11 mode by default, try to add an # option to output variable CC to make it so. This macro tries # various options that select ISO C11 on some system or another. It # considers the compiler to be in ISO C11 mode if it handles _Alignas, # _Alignof, _Noreturn, _Static_assert, UTF-8 string literals, # duplicate typedefs, and anonymous structures and unions. AC_DEFUN([_AC_PROG_CC_C11], [_AC_C_STD_TRY([c11], [_AC_C_C99_TEST_HEADER[ // Check _Alignas. char _Alignas (double) aligned_as_double; char _Alignas (0) no_special_alignment; extern char aligned_as_int; char _Alignas (0) _Alignas (int) aligned_as_int; // Check _Alignof. enum { int_alignment = _Alignof (int), int_array_alignment = _Alignof (int[100]), char_alignment = _Alignof (char) }; _Static_assert (0 < -_Alignof (int), "_Alignof is signed"); // Check _Noreturn. int _Noreturn does_not_return (void) { for (;;) continue; } // Check _Static_assert. struct test_static_assert { int x; _Static_assert (sizeof (int) <= sizeof (long int), "_Static_assert does not work in struct"); long int y; }; // Check UTF-8 literals. #define u8 syntax error! char const utf8_literal[] = u8"happens to be ASCII" "another string"; // Check duplicate typedefs. typedef long *long_ptr; typedef long int *long_ptr; typedef long_ptr long_ptr; // Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1. struct anonymous { union { struct { int i; int j; }; struct { int k; long int l; } w; }; int m; } v1; ]], [_AC_C_C99_TEST_BODY[ v1.i = 2; v1.w.k = 5; _Static_assert ((offsetof (struct anonymous, i) == offsetof (struct anonymous, w.k)), "Anonymous union alignment botch"); ]], dnl Try dnl GCC -std=gnu11 (unused restrictive mode: -std=c11) dnl with extended modes being tried first. dnl dnl Do not try -qlanglvl=extc1x, because IBM XL C V12.1 (the latest version as dnl of September 2012) does not pass the C11 test. For now, try extc1x when dnl compiling the C99 test instead, since it enables _Static_assert and dnl _Noreturn, which is a win. If -qlanglvl=extc11 or -qlanglvl=extc1x passes dnl the C11 test in some future version of IBM XL C, we'll add it here, dnl preferably extc11. [[-std=gnu11]], [$1], [$2])[]dnl ])# _AC_PROG_CC_C11 # AC_PROG_CC_C89 # -------------- # Do not use AU_ALIAS here and in AC_PROG_CC_C99 and AC_PROG_CC_STDC, # as that'd be incompatible with how Automake redefines AC_PROG_CC. See # . AU_DEFUN([AC_PROG_CC_C89], [AC_REQUIRE([AC_PROG_CC])], [$0 is obsolete; use AC_PROG_CC] ) # AC_PROG_CC_C99 # -------------- AU_DEFUN([AC_PROG_CC_C99], [AC_REQUIRE([AC_PROG_CC])], [$0 is obsolete; use AC_PROG_CC] ) # AC_PROG_CC_STDC # --------------- AU_DEFUN([AC_PROG_CC_STDC], [AC_REQUIRE([AC_PROG_CC])], [$0 is obsolete; use AC_PROG_CC] ) # AC_C_PROTOTYPES # --------------- # Check if the C compiler supports prototypes, included if it needs # options. AC_DEFUN([AC_C_PROTOTYPES], [AC_REQUIRE([AC_PROG_CC])dnl if test "$ac_prog_cc_stdc" != no; then AC_DEFINE(PROTOTYPES, 1, [Define to 1 if the C compiler supports function prototypes.]) AC_DEFINE(__PROTOTYPES, 1, [Define like PROTOTYPES; this can be used by system headers.]) fi ])# AC_C_PROTOTYPES # _AC_CXX_STD_TRY(STANDARD, TEST-PROLOGUE, TEST-BODY, OPTION-LIST, # ACTION-IF-AVAILABLE, ACTION-IF-UNAVAILABLE) # ---------------------------------------------------------------- # Check whether the C++ compiler accepts features of STANDARD (e.g # `cxx98', `cxx11') by trying to compile a program of TEST-PROLOGUE # and TEST-BODY. If this fails, try again with each compiler option # in the space-separated OPTION-LIST; if one helps, append it to CXX. # If eventually successful, run ACTION-IF-AVAILABLE, else # ACTION-IF-UNAVAILABLE. AC_DEFUN([_AC_CXX_STD_TRY], [AC_MSG_CHECKING([for $CXX option to enable ]m4_translit(m4_translit($1, [x], [+]), [a-z], [A-Z])[ features]) AC_LANG_PUSH(C++)dnl AC_CACHE_VAL(ac_cv_prog_cxx_$1, [ac_cv_prog_cxx_$1=no ac_save_CXX=$CXX AC_LANG_CONFTEST([AC_LANG_PROGRAM([$2], [$3])]) for ac_arg in '' $4 do CXX="$ac_save_CXX $ac_arg" _AC_COMPILE_IFELSE([], [ac_cv_prog_cxx_$1=$ac_arg]) test "x$ac_cv_prog_cxx_$1" != "xno" && break done rm -f conftest.$ac_ext CXX=$ac_save_CXX ])# AC_CACHE_VAL ac_prog_cxx_stdcxx_options= case "x$ac_cv_prog_cxx_$1" in x) AC_MSG_RESULT([none needed]) ;; xno) AC_MSG_RESULT([unsupported]) ;; *) ac_prog_cxx_stdcxx_options=" $ac_cv_prog_cxx_$1" CXX=$CXX$ac_prog_cxx_stdcxx_options AC_MSG_RESULT([$ac_cv_prog_cxx_$1]) ;; esac AC_LANG_POP(C++)dnl AS_IF([test "x$ac_cv_prog_cxx_$1" != xno], [$5], [$6]) ])# _AC_CXX_STD_TRY # _AC_CXX_CXX98_TEST_HEADER # ------------------------- # A C++ header suitable for testing for CXX98. AC_DEFUN([_AC_CXX_CXX98_TEST_HEADER], [[ #include #include #include #include #include #include #include #include #include #include #include #include #include namespace test { typedef std::vector string_vec; typedef std::pair map_value; typedef std::map map_type; typedef std::set set_type; template class printer { public: printer(std::ostringstream& os): os(os) {} void operator() (T elem) { os << elem << std::endl; } private: std::ostringstream& os; }; } ]])# _AC_CXX_CXX98_TEST_HEADER # _AC_CXX_CXX98_TEST_BODY # ----------------------- # A C++ body suitable for testing for CXX98, assuming the corresponding header. AC_DEFUN([_AC_CXX_CXX98_TEST_BODY], [[ try { // Basic string. std::string teststr("ASCII text"); teststr += " string"; // Simple vector. test::string_vec testvec; testvec.push_back(teststr); testvec.push_back("foo"); testvec.push_back("bar"); if (testvec.size() != 3) { throw std::runtime_error("vector size is not 1"); } // Dump vector into stringstream and obtain string. std::ostringstream os; for (test::string_vec::const_iterator i = testvec.begin(); i != testvec.end(); ++i) { if (i + 1 != testvec.end()) { os << teststr << '\n'; } } // Check algorithms work. std::for_each(testvec.begin(), testvec.end(), test::printer(os)); std::string os_out = os.str(); // Test pair and map. test::map_type testmap; testmap.insert(std::make_pair(std::string("key"), std::make_pair(53,false))); // Test set. int values[] = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; test::set_type testset(values, values + sizeof(values)/sizeof(values[0])); std::list testlist(testset.begin(), testset.end()); std::copy(testset.begin(), testset.end(), std::back_inserter(testlist)); } catch (const std::exception& e) { std::cerr << "Caught exception: " << e.what() << std::endl; // Test fstream std::ofstream of("test.txt"); of << "Test ASCII text\n" << std::flush; of << "N= " << std::hex << std::setw(8) << std::left << 534 << std::endl; of.close(); } std::exit(0); ]]) # _AC_CXX_CXX11_TEST_HEADER # ------------------------- # A C++ header suitable for testing for CXX11. AC_DEFUN([_AC_CXX_CXX11_TEST_HEADER], [[ #include #include #include #include #include #include #include namespace cxx11test { typedef std::shared_ptr sptr; typedef std::weak_ptr wptr; typedef std::tuple tp; typedef std::array int_array; constexpr int get_val() { return 20; } struct testinit { int i; double d; }; class delegate { public: delegate(int n) : n(n) {} delegate(): delegate(2354) {} virtual int getval() { return this->n; }; protected: int n; }; class overridden : public delegate { public: overridden(int n): delegate(n) {} virtual int getval() override final { return this->n * 2; } }; class nocopy { public: nocopy(int i): i(i) {} nocopy() = default; nocopy(const nocopy&) = delete; nocopy & operator=(const nocopy&) = delete; private: int i; }; } ]])# _AC_CXX_CXX11_TEST_HEADER # _AC_CXX_CXX11_TEST_BODY # ----------------------- # A C++ body suitable for testing for CXX11, assuming the corresponding header. AC_DEFUN([_AC_CXX_CXX11_TEST_BODY], [[ { // Test auto and decltype std::deque d; d.push_front(43); d.push_front(484); d.push_front(3); d.push_front(844); int total = 0; for (auto i = d.begin(); i != d.end(); ++i) { total += *i; } auto a1 = 6538; auto a2 = 48573953.4; auto a3 = "String literal"; decltype(a2) a4 = 34895.034; } { // Test constexpr short sa[cxx11test::get_val()] = { 0 }; } { // Test initializer lists cxx11test::testinit il = { 4323, 435234.23544 }; } { // Test range-based for and lambda cxx11test::int_array array = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; for (int &x : array) { x += 23; } std::for_each(array.begin(), array.end(), [](int v1){ std::cout << v1; }); } { using cxx11test::sptr; using cxx11test::wptr; sptr sp(new std::string("ASCII string")); wptr wp(sp); sptr sp2(wp); } { cxx11test::tp tuple("test", 54, 45.53434); double d = std::get<2>(tuple); std::string s; int i; std::tie(s,i,d) = tuple; } { static std::regex filename_regex("^_?([a-z0-9_.]+-)+[a-z0-9]+$"); std::string testmatch("Test if this string matches"); bool match = std::regex_search(testmatch, filename_regex); } { cxx11test::int_array array = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; cxx11test::int_array::size_type size = array.size(); } { // Test constructor delegation cxx11test::delegate d1; cxx11test::delegate d2(); cxx11test::delegate d3(45); } { // Test override and final cxx11test::overridden o1(55464); } { // Test nullptr char *c = nullptr; } { // Test template brackets std::vector> v1; } { // Unicode literals char const *utf8 = u8"UTF-8 string \u2500"; char16_t const *utf16 = u"UTF-8 string \u2500"; char32_t const *utf32 = U"UTF-32 string \u2500"; } ]]) # _AC_PROG_CXX_CXX98 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) # ------------------------------------------------------------------- # If the C++ compiler is not in ISO C++98 mode by default, try to add # an option to output variable CXX to make it so. This macro tries # various options that select ISO C++98 on some system or another. It # considers the compiler to be in ISO C++98 mode if it handles basic # features of the std namespace including: string, containers (list, # map, set, vector), streams (fstreams, iostreams, stringstreams, # iomanip), pair, exceptions and algorithms. AC_DEFUN([_AC_PROG_CXX_CXX98], [_AC_CXX_STD_TRY([cxx98], [_AC_CXX_CXX98_TEST_HEADER], [_AC_CXX_CXX98_TEST_BODY], dnl Try dnl GCC -std=gnu++98 (unused restrictive mode: -std=c++98) dnl IBM XL C -qlanglvl=extended dnl HP aC++ -AA dnl Intel ICC -std=gnu++98 dnl Solaris N/A (default) dnl Tru64 N/A (default, but -std gnu could be used) dnl with extended modes being tried first. [[-std=gnu++98 -std=c++98 -qlanglvl=extended -AA]], [$1], [$2])[]dnl ])# _AC_PROG_CXX_CXX98 # _AC_PROG_CXX_CXX11 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) # ------------------------------------------------------------------- # If the C++ compiler is not in ISO CXX11 mode by default, try to add # an option to output variable CXX to make it so. This macro tries # various options that select ISO C++11 on some system or another. It # considers the compiler to be in ISO C++11 mode if it handles all the # tests from the C++98 checks, plus the following: Language features # (auto, constexpr, decltype, default/deleted constructors, delegate # constructors, final, initializer lists, lambda functions, nullptr, # override, range-based for loops, template brackets without spaces, # unicode literals) and library features (array, memory (shared_ptr, # weak_ptr), regex and tuple types). AC_DEFUN([_AC_PROG_CXX_CXX11], [_AC_CXX_STD_TRY([cxx11], [_AC_CXX_CXX11_TEST_HEADER _AC_CXX_CXX98_TEST_HEADER], [_AC_CXX_CXX11_TEST_BODY _AC_CXX_CXX98_TEST_BODY], dnl Try dnl GCC -std=gnu++11 (unused restrictive mode: -std=c++11) [and 0x variants] dnl IBM XL C -qlanglvl=extended0x dnl (pre-V12.1; unused restrictive mode: -qlanglvl=stdcxx11) dnl HP aC++ -AA dnl Intel ICC -std=c++11 -std=c++0x dnl Solaris N/A (no support) dnl Tru64 N/A (no support) dnl with extended modes being tried first. [[-std=gnu++11 -std=c++11 -std=gnu++0x -std=c++0x -qlanglvl=extended0x -AA]], [$1], [$2])[]dnl ])# _AC_PROG_CXX_CXX11 # stdarg.m4 serial 7 dnl Copyright (C) 2006, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Provide a working va_copy in combination with . AC_DEFUN([gl_STDARG_H], [ STDARG_H='' NEXT_STDARG_H='' AC_CACHE_CHECK([for va_copy], [gl_cv_func_va_copy], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[ #ifndef va_copy void (*func) (va_list, va_list) = va_copy; #endif ]])], [gl_cv_func_va_copy=yes], [gl_cv_func_va_copy=no]) ]) if test $gl_cv_func_va_copy = no; then dnl Provide a substitute. dnl Usually a simple definition in is enough. Not so on AIX 5 dnl with some versions of the /usr/vac/bin/cc compiler. It has an dnl which does '#undef va_copy', leading to a missing va_copy symbol. For dnl this platform, we use an substitute. But we cannot use this dnl approach on other platforms, because often defines only dnl preprocessor macros and gl_ABSOLUTE_HEADER, gl_CHECK_NEXT_HEADERS do dnl not work in this situation. AC_EGREP_CPP([vaccine], [#if defined _AIX && !defined __GNUC__ AIX vaccine #endif ], [gl_aixcc=yes], [gl_aixcc=no]) if test $gl_aixcc = yes; then dnl Provide a substitute file. STDARG_H=stdarg.h gl_NEXT_HEADERS([stdarg.h]) dnl Fallback for the case when contains only macro definitions. if test "$gl_cv_next_stdarg_h" = '""'; then gl_cv_next_stdarg_h='"///usr/include/stdarg.h"' NEXT_STDARG_H="$gl_cv_next_stdarg_h" fi else dnl Provide a substitute in , either __va_copy or as a simple dnl assignment. gl_CACHE_VAL_SILENT([gl_cv_func___va_copy], [ AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[ #ifndef __va_copy error, bail out #endif ]])], [gl_cv_func___va_copy=yes], [gl_cv_func___va_copy=no])]) if test $gl_cv_func___va_copy = yes; then AC_DEFINE([va_copy], [__va_copy], [Define as a macro for copying va_list variables.]) else AH_VERBATIM([gl_VA_COPY], [/* A replacement for va_copy, if needed. */ #define gl_va_copy(a,b) ((a) = (b))]) AC_DEFINE([va_copy], [gl_va_copy], [Define as a macro for copying va_list variables.]) fi fi fi AC_SUBST([STDARG_H]) AM_CONDITIONAL([GL_GENERATE_STDARG_H], [test -n "$STDARG_H"]) AC_SUBST([NEXT_STDARG_H]) ]) # Check for stdbool.h that conforms to C99. dnl Copyright (C) 2002-2006, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. #serial 8 # Prepare for substituting if it is not supported. AC_DEFUN([AM_STDBOOL_H], [ AC_REQUIRE([AC_CHECK_HEADER_STDBOOL]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl On some platforms, does not exist or does not conform to C99. dnl On Solaris 10 with CC=cc CXX=CC, exists but is not usable dnl in C++ mode (and no exists). In this case, we use our dnl replacement, also in C mode (for binary compatibility between C and C++). if test "$ac_cv_header_stdbool_h" = yes; then case "$host_os" in solaris*) if test -z "$GCC"; then STDBOOL_H='stdbool.h' else STDBOOL_H='' fi ;; *) STDBOOL_H='' ;; esac else STDBOOL_H='stdbool.h' fi AC_SUBST([STDBOOL_H]) AM_CONDITIONAL([GL_GENERATE_STDBOOL_H], [test -n "$STDBOOL_H"]) if test "$ac_cv_type__Bool" = yes; then HAVE__BOOL=1 else HAVE__BOOL=0 fi AC_SUBST([HAVE__BOOL]) ]) # AM_STDBOOL_H will be renamed to gl_STDBOOL_H in the future. AC_DEFUN([gl_STDBOOL_H], [AM_STDBOOL_H]) # This version of the macro is needed in autoconf <= 2.68. AC_DEFUN([AC_CHECK_HEADER_STDBOOL], [AC_CACHE_CHECK([for stdbool.h that conforms to C99], [ac_cv_header_stdbool_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include #ifdef __cplusplus typedef bool Bool; #else typedef _Bool Bool; #ifndef bool "error: bool is not defined" #endif #ifndef false "error: false is not defined" #endif #if false "error: false is not 0" #endif #ifndef true "error: true is not defined" #endif #if true != 1 "error: true is not 1" #endif #endif #ifndef __bool_true_false_are_defined "error: __bool_true_false_are_defined is not defined" #endif struct s { Bool s: 1; Bool t; bool u: 1; bool v; } s; char a[true == 1 ? 1 : -1]; char b[false == 0 ? 1 : -1]; char c[__bool_true_false_are_defined == 1 ? 1 : -1]; char d[(bool) 0.5 == true ? 1 : -1]; /* See body of main program for 'e'. */ char f[(Bool) 0.0 == false ? 1 : -1]; char g[true]; char h[sizeof (Bool)]; char i[sizeof s.t]; enum { j = false, k = true, l = false * true, m = true * 256 }; /* The following fails for HP aC++/ANSI C B3910B A.05.55 [Dec 04 2003]. */ Bool n[m]; char o[sizeof n == m * sizeof n[0] ? 1 : -1]; char p[-1 - (Bool) 0 < 0 && -1 - (bool) 0 < 0 ? 1 : -1]; /* Catch a bug in an HP-UX C compiler. See https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html https://lists.gnu.org/r/bug-coreutils/2005-11/msg00161.html */ Bool q = true; Bool *pq = &q; bool *qq = &q; ]], [[ bool e = &s; *pq |= q; *pq |= ! q; *qq |= q; *qq |= ! q; /* Refer to every declared value, to avoid compiler optimizations. */ return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !!j + !k + !!l + !m + !n + !o + !p + !q + !pq + !qq); ]])], [ac_cv_header_stdbool_h=yes], [ac_cv_header_stdbool_h=no])]) AC_CHECK_TYPES([_Bool]) ]) dnl A placeholder for , for platforms that have issues. # stddef_h.m4 serial 6 dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_STDDEF_H], [ AC_REQUIRE([gl_STDDEF_H_DEFAULTS]) AC_REQUIRE([gt_TYPE_WCHAR_T]) STDDEF_H= dnl Test whether the type max_align_t exists and whether its alignment dnl "is as great as is supported by the implementation in all contexts". AC_CACHE_CHECK([for good max_align_t], [gl_cv_type_max_align_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include unsigned int s = sizeof (max_align_t); #if defined __GNUC__ || defined __IBM__ALIGNOF__ int check1[2 * (__alignof__ (double) <= __alignof__ (max_align_t)) - 1]; int check2[2 * (__alignof__ (long double) <= __alignof__ (max_align_t)) - 1]; #endif ]])], [gl_cv_type_max_align_t=yes], [gl_cv_type_max_align_t=no]) ]) if test $gl_cv_type_max_align_t = no; then HAVE_MAX_ALIGN_T=0 STDDEF_H=stddef.h fi if test $gt_cv_c_wchar_t = no; then HAVE_WCHAR_T=0 STDDEF_H=stddef.h fi AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions], [gl_cv_decl_null_works], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include int test[2 * (sizeof NULL == sizeof (void *)) -1]; ]])], [gl_cv_decl_null_works=yes], [gl_cv_decl_null_works=no])]) if test $gl_cv_decl_null_works = no; then REPLACE_NULL=1 STDDEF_H=stddef.h fi AC_SUBST([STDDEF_H]) AM_CONDITIONAL([GL_GENERATE_STDDEF_H], [test -n "$STDDEF_H"]) if test -n "$STDDEF_H"; then gl_NEXT_HEADERS([stddef.h]) fi ]) AC_DEFUN([gl_STDDEF_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_STDDEF_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) ]) AC_DEFUN([gl_STDDEF_H_DEFAULTS], [ dnl Assume proper GNU behavior unless another module says otherwise. REPLACE_NULL=0; AC_SUBST([REPLACE_NULL]) HAVE_MAX_ALIGN_T=1; AC_SUBST([HAVE_MAX_ALIGN_T]) HAVE_WCHAR_T=1; AC_SUBST([HAVE_WCHAR_T]) ]) # stdint.m4 serial 54 dnl Copyright (C) 2001-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert and Bruno Haible. dnl Test whether is supported or must be substituted. AC_PREREQ([2.61]) AC_DEFUN_ONCE([gl_STDINT_H], [ AC_PREREQ([2.59])dnl AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_LIMITS_H]) AC_REQUIRE([gt_TYPE_WINT_T]) dnl For backward compatibility. Some packages may still be testing these dnl macros. AC_DEFINE([HAVE_LONG_LONG_INT], [1], [Define to 1 if the system has the type 'long long int'.]) AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1], [Define to 1 if the system has the type 'unsigned long long int'.]) dnl Check for , in the same way as gl_WCHAR_H does. AC_CHECK_HEADERS_ONCE([wchar.h]) if test $ac_cv_header_wchar_h = yes; then HAVE_WCHAR_H=1 else HAVE_WCHAR_H=0 fi AC_SUBST([HAVE_WCHAR_H]) dnl Check for . dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h. if test $ac_cv_header_inttypes_h = yes; then HAVE_INTTYPES_H=1 else HAVE_INTTYPES_H=0 fi AC_SUBST([HAVE_INTTYPES_H]) dnl Check for . dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_sys_types_h. if test $ac_cv_header_sys_types_h = yes; then HAVE_SYS_TYPES_H=1 else HAVE_SYS_TYPES_H=0 fi AC_SUBST([HAVE_SYS_TYPES_H]) gl_CHECK_NEXT_HEADERS([stdint.h]) if test $ac_cv_header_stdint_h = yes; then HAVE_STDINT_H=1 else HAVE_STDINT_H=0 fi AC_SUBST([HAVE_STDINT_H]) dnl Now see whether we need a substitute . if test $ac_cv_header_stdint_h = yes; then AC_CACHE_CHECK([whether stdint.h conforms to C99], [gl_cv_header_working_stdint_h], [gl_cv_header_working_stdint_h=no AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ #define __STDC_CONSTANT_MACROS 1 #define __STDC_LIMIT_MACROS 1 #include /* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in . */ #if !(defined WCHAR_MIN && defined WCHAR_MAX) #error "WCHAR_MIN, WCHAR_MAX not defined in " #endif ] gl_STDINT_INCLUDES [ #ifdef INT8_MAX int8_t a1 = INT8_MAX; int8_t a1min = INT8_MIN; #endif #ifdef INT16_MAX int16_t a2 = INT16_MAX; int16_t a2min = INT16_MIN; #endif #ifdef INT32_MAX int32_t a3 = INT32_MAX; int32_t a3min = INT32_MIN; #endif #ifdef INT64_MAX int64_t a4 = INT64_MAX; int64_t a4min = INT64_MIN; #endif #ifdef UINT8_MAX uint8_t b1 = UINT8_MAX; #else typedef int b1[(unsigned char) -1 != 255 ? 1 : -1]; #endif #ifdef UINT16_MAX uint16_t b2 = UINT16_MAX; #endif #ifdef UINT32_MAX uint32_t b3 = UINT32_MAX; #endif #ifdef UINT64_MAX uint64_t b4 = UINT64_MAX; #endif int_least8_t c1 = INT8_C (0x7f); int_least8_t c1max = INT_LEAST8_MAX; int_least8_t c1min = INT_LEAST8_MIN; int_least16_t c2 = INT16_C (0x7fff); int_least16_t c2max = INT_LEAST16_MAX; int_least16_t c2min = INT_LEAST16_MIN; int_least32_t c3 = INT32_C (0x7fffffff); int_least32_t c3max = INT_LEAST32_MAX; int_least32_t c3min = INT_LEAST32_MIN; int_least64_t c4 = INT64_C (0x7fffffffffffffff); int_least64_t c4max = INT_LEAST64_MAX; int_least64_t c4min = INT_LEAST64_MIN; uint_least8_t d1 = UINT8_C (0xff); uint_least8_t d1max = UINT_LEAST8_MAX; uint_least16_t d2 = UINT16_C (0xffff); uint_least16_t d2max = UINT_LEAST16_MAX; uint_least32_t d3 = UINT32_C (0xffffffff); uint_least32_t d3max = UINT_LEAST32_MAX; uint_least64_t d4 = UINT64_C (0xffffffffffffffff); uint_least64_t d4max = UINT_LEAST64_MAX; int_fast8_t e1 = INT_FAST8_MAX; int_fast8_t e1min = INT_FAST8_MIN; int_fast16_t e2 = INT_FAST16_MAX; int_fast16_t e2min = INT_FAST16_MIN; int_fast32_t e3 = INT_FAST32_MAX; int_fast32_t e3min = INT_FAST32_MIN; int_fast64_t e4 = INT_FAST64_MAX; int_fast64_t e4min = INT_FAST64_MIN; uint_fast8_t f1 = UINT_FAST8_MAX; uint_fast16_t f2 = UINT_FAST16_MAX; uint_fast32_t f3 = UINT_FAST32_MAX; uint_fast64_t f4 = UINT_FAST64_MAX; #ifdef INTPTR_MAX intptr_t g = INTPTR_MAX; intptr_t gmin = INTPTR_MIN; #endif #ifdef UINTPTR_MAX uintptr_t h = UINTPTR_MAX; #endif intmax_t i = INTMAX_MAX; uintmax_t j = UINTMAX_MAX; /* Check that SIZE_MAX has the correct type, if possible. */ #if 201112 <= __STDC_VERSION__ int k = _Generic (SIZE_MAX, size_t: 0); #elif (2 <= __GNUC__ || defined __IBM__TYPEOF__ \ || (0x5110 <= __SUNPRO_C && !__STDC__)) extern size_t k; extern __typeof__ (SIZE_MAX) k; #endif #include /* for CHAR_BIT */ #define TYPE_MINIMUM(t) \ ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t))) #define TYPE_MAXIMUM(t) \ ((t) ((t) 0 < (t) -1 \ ? (t) -1 \ : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1))) struct s { int check_PTRDIFF: PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t) && PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t) ? 1 : -1; /* Detect bug in FreeBSD 6.0 / ia64. */ int check_SIG_ATOMIC: SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t) && SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t) ? 1 : -1; int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1; int check_WCHAR: WCHAR_MIN == TYPE_MINIMUM (wchar_t) && WCHAR_MAX == TYPE_MAXIMUM (wchar_t) ? 1 : -1; /* Detect bug in mingw. */ int check_WINT: WINT_MIN == TYPE_MINIMUM (wint_t) && WINT_MAX == TYPE_MAXIMUM (wint_t) ? 1 : -1; /* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others. */ int check_UINT8_C: (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1; int check_UINT16_C: (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1; /* Detect bugs in OpenBSD 3.9 stdint.h. */ #ifdef UINT8_MAX int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1; #endif #ifdef UINT16_MAX int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1; #endif #ifdef UINT32_MAX int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1; #endif #ifdef UINT64_MAX int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1; #endif int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1; int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1; int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1; int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1; int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1; int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1; int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1; int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1; int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1; int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1; int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1; }; ]])], [dnl Determine whether the various *_MIN, *_MAX macros are usable dnl in preprocessor expression. We could do it by compiling a test dnl program for each of these macros. It is faster to run a program dnl that inspects the macro expansion. dnl This detects a bug on HP-UX 11.23/ia64. AC_RUN_IFELSE([ AC_LANG_PROGRAM([[ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ #define __STDC_CONSTANT_MACROS 1 #define __STDC_LIMIT_MACROS 1 #include ] gl_STDINT_INCLUDES [ #include #include #define MVAL(macro) MVAL1(macro) #define MVAL1(expression) #expression static const char *macro_values[] = { #ifdef INT8_MAX MVAL (INT8_MAX), #endif #ifdef INT16_MAX MVAL (INT16_MAX), #endif #ifdef INT32_MAX MVAL (INT32_MAX), #endif #ifdef INT64_MAX MVAL (INT64_MAX), #endif #ifdef UINT8_MAX MVAL (UINT8_MAX), #endif #ifdef UINT16_MAX MVAL (UINT16_MAX), #endif #ifdef UINT32_MAX MVAL (UINT32_MAX), #endif #ifdef UINT64_MAX MVAL (UINT64_MAX), #endif NULL }; ]], [[ const char **mv; for (mv = macro_values; *mv != NULL; mv++) { const char *value = *mv; /* Test whether it looks like a cast expression. */ if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0 || strncmp (value, "((unsigned short)"/*)*/, 17) == 0 || strncmp (value, "((unsigned char)"/*)*/, 16) == 0 || strncmp (value, "((int)"/*)*/, 6) == 0 || strncmp (value, "((signed short)"/*)*/, 15) == 0 || strncmp (value, "((signed char)"/*)*/, 14) == 0) return mv - macro_values + 1; } return 0; ]])], [gl_cv_header_working_stdint_h=yes], [], [case "$host_os" in # Guess yes on native Windows. mingw*) gl_cv_header_working_stdint_h="guessing yes" ;; # In general, assume it works. *) gl_cv_header_working_stdint_h="guessing yes" ;; esac ]) ]) ]) fi HAVE_C99_STDINT_H=0 HAVE_SYS_BITYPES_H=0 HAVE_SYS_INTTYPES_H=0 STDINT_H=stdint.h case "$gl_cv_header_working_stdint_h" in *yes) HAVE_C99_STDINT_H=1 dnl Now see whether the system works without dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined. AC_CACHE_CHECK([whether stdint.h predates C++11], [gl_cv_header_stdint_predates_cxx11_h], [gl_cv_header_stdint_predates_cxx11_h=yes AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ #include ] gl_STDINT_INCLUDES [ intmax_t im = INTMAX_MAX; int32_t i32 = INT32_C (0x7fffffff); ]])], [gl_cv_header_stdint_predates_cxx11_h=no])]) if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then AC_DEFINE([__STDC_CONSTANT_MACROS], [1], [Define to 1 if the system predates C++11.]) AC_DEFINE([__STDC_LIMIT_MACROS], [1], [Define to 1 if the system predates C++11.]) fi AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.], [gl_cv_header_stdint_width], [gl_cv_header_stdint_width=no AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ /* Work if build is not clean. */ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 #ifndef __STDC_WANT_IEC_60559_BFP_EXT__ #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 #endif #include ]gl_STDINT_INCLUDES[ int iw = UINTMAX_WIDTH; ]])], [gl_cv_header_stdint_width=yes])]) if test "$gl_cv_header_stdint_width" = yes; then STDINT_H= fi ;; *) dnl Check for , and for dnl (used in Linux libc4 >= 4.6.7 and libc5). AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h]) if test $ac_cv_header_sys_inttypes_h = yes; then HAVE_SYS_INTTYPES_H=1 fi if test $ac_cv_header_sys_bitypes_h = yes; then HAVE_SYS_BITYPES_H=1 fi gl_STDINT_TYPE_PROPERTIES ;; esac dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH. gl_REPLACE_LIMITS_H AC_SUBST([HAVE_C99_STDINT_H]) AC_SUBST([HAVE_SYS_BITYPES_H]) AC_SUBST([HAVE_SYS_INTTYPES_H]) AC_SUBST([STDINT_H]) AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"]) ]) dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES) dnl Determine the size of each of the given types in bits. AC_DEFUN([gl_STDINT_BITSIZEOF], [ dnl Use a shell loop, to avoid bloating configure, and dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into dnl config.h.in, dnl - extra AC_SUBST calls, so that the right substitutions are made. m4_foreach_w([gltype], [$1], [AH_TEMPLATE([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), [Define to the number of bits in type ']gltype['.])]) for gltype in $1 ; do AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}], [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT], [$2 #include ], [result=unknown]) eval gl_cv_bitsizeof_${gltype}=\$result ]) eval result=\$gl_cv_bitsizeof_${gltype} if test $result = unknown; then dnl Use a nonempty default, because some compilers, such as IRIX 5 cc, dnl do a syntax check even on unused #if conditions and give an error dnl on valid C code like this: dnl #if 0 dnl # if > 32 dnl # endif dnl #endif result=0 fi GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result]) eval BITSIZEOF_${GLTYPE}=\$result done m4_foreach_w([gltype], [$1], [AC_SUBST([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) ]) dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES) dnl Determine the signedness of each of the given types. dnl Define HAVE_SIGNED_TYPE if type is signed. AC_DEFUN([gl_CHECK_TYPES_SIGNED], [ dnl Use a shell loop, to avoid bloating configure, and dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into dnl config.h.in, dnl - extra AC_SUBST calls, so that the right substitutions are made. m4_foreach_w([gltype], [$1], [AH_TEMPLATE([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]), [Define to 1 if ']gltype[' is a signed integer type.])]) for gltype in $1 ; do AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([$2[ int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])], result=yes, result=no) eval gl_cv_type_${gltype}_signed=\$result ]) eval result=\$gl_cv_type_${gltype}_signed GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` if test "$result" = yes; then AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1]) eval HAVE_SIGNED_${GLTYPE}=1 else eval HAVE_SIGNED_${GLTYPE}=0 fi done m4_foreach_w([gltype], [$1], [AC_SUBST([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))]) ]) dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES) dnl Determine the suffix to use for integer constants of the given types. dnl Define t_SUFFIX for each such type. AC_DEFUN([gl_INTEGER_TYPE_SUFFIX], [ dnl Use a shell loop, to avoid bloating configure, and dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into dnl config.h.in, dnl - extra AC_SUBST calls, so that the right substitutions are made. m4_foreach_w([gltype], [$1], [AH_TEMPLATE(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX], [Define to l, ll, u, ul, ull, etc., as suitable for constants of type ']gltype['.])]) for gltype in $1 ; do AC_CACHE_CHECK([for $gltype integer literal suffix], [gl_cv_type_${gltype}_suffix], [eval gl_cv_type_${gltype}_suffix=no eval result=\$gl_cv_type_${gltype}_signed if test "$result" = yes; then glsufu= else glsufu=u fi for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do case $glsuf in '') gltype1='int';; l) gltype1='long int';; ll) gltype1='long long int';; i64) gltype1='__int64';; u) gltype1='unsigned int';; ul) gltype1='unsigned long int';; ull) gltype1='unsigned long long int';; ui64)gltype1='unsigned __int64';; esac AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([$2[ extern $gltype foo; extern $gltype1 foo;]])], [eval gl_cv_type_${gltype}_suffix=\$glsuf]) eval result=\$gl_cv_type_${gltype}_suffix test "$result" != no && break done]) GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'` eval result=\$gl_cv_type_${gltype}_suffix test "$result" = no && result= eval ${GLTYPE}_SUFFIX=\$result AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result]) done m4_foreach_w([gltype], [$1], [AC_SUBST(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])]) ]) dnl gl_STDINT_INCLUDES AC_DEFUN([gl_STDINT_INCLUDES], [[ /* BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #if HAVE_WCHAR_H # include # include # include #endif ]]) dnl gl_STDINT_TYPE_PROPERTIES dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t dnl of interest to stdint.in.h. AC_DEFUN([gl_STDINT_TYPE_PROPERTIES], [ AC_REQUIRE([gl_MULTIARCH]) if test $APPLE_UNIVERSAL_BUILD = 0; then gl_STDINT_BITSIZEOF([ptrdiff_t size_t], [gl_STDINT_INCLUDES]) fi gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t], [gl_STDINT_INCLUDES]) gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t], [gl_STDINT_INCLUDES]) gl_cv_type_ptrdiff_t_signed=yes gl_cv_type_size_t_signed=no if test $APPLE_UNIVERSAL_BUILD = 0; then gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t], [gl_STDINT_INCLUDES]) fi gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t], [gl_STDINT_INCLUDES]) dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99 dnl requirement that wint_t is "unchanged by default argument promotions". dnl In this case gnulib's and override wint_t. dnl Set the variable BITSIZEOF_WINT_T accordingly. if test $GNULIB_OVERRIDES_WINT_T = 1; then BITSIZEOF_WINT_T=32 fi ]) # stdint_h.m4 serial 9 dnl Copyright (C) 1997-2004, 2006, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Paul Eggert. # Define HAVE_STDINT_H_WITH_UINTMAX if exists, # doesn't clash with , and declares uintmax_t. AC_DEFUN([gl_AC_HEADER_STDINT_H], [ AC_CACHE_CHECK([for stdint.h], [gl_cv_header_stdint_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include #include ]], [[uintmax_t i = (uintmax_t) -1; return !i;]])], [gl_cv_header_stdint_h=yes], [gl_cv_header_stdint_h=no])]) if test $gl_cv_header_stdint_h = yes; then AC_DEFINE_UNQUOTED([HAVE_STDINT_H_WITH_UINTMAX], [1], [Define if exists, doesn't clash with , and declares uintmax_t. ]) fi ]) # stdio_h.m4 serial 50 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_STDIO_H], [ AH_VERBATIM([MINGW_ANSI_STDIO], [/* Use GNU style printf and scanf. */ #ifndef __USE_MINGW_ANSI_STDIO # undef __USE_MINGW_ANSI_STDIO #endif ]) AC_DEFINE([__USE_MINGW_ANSI_STDIO]) AC_REQUIRE([gl_STDIO_H_DEFAULTS]) gl_NEXT_HEADERS([stdio.h]) dnl Determine whether __USE_MINGW_ANSI_STDIO makes printf and dnl inttypes.h behave like gnu instead of system; we must give our dnl printf wrapper the right attribute to match. AC_CACHE_CHECK([which flavor of printf attribute matches inttypes macros], [gl_cv_func_printf_attribute_flavor], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #define __STDC_FORMAT_MACROS 1 #include #include /* For non-mingw systems, compilation will trivially succeed. For mingw, compilation will succeed for older mingw (system printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */ #if (defined _WIN32 && ! defined __CYGWIN__) && \ (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1]; #endif ]])], [gl_cv_func_printf_attribute_flavor=system], [gl_cv_func_printf_attribute_flavor=gnu])]) if test "$gl_cv_func_printf_attribute_flavor" = gnu; then AC_DEFINE([GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU], [1], [Define to 1 if printf and friends should be labeled with attribute "__gnu_printf__" instead of "__printf__"]) fi dnl No need to create extra modules for these functions. Everyone who uses dnl likely needs them. GNULIB_FSCANF=1 gl_MODULE_INDICATOR([fscanf]) GNULIB_SCANF=1 gl_MODULE_INDICATOR([scanf]) GNULIB_FGETC=1 GNULIB_GETC=1 GNULIB_GETCHAR=1 GNULIB_FGETS=1 GNULIB_FREAD=1 dnl This ifdef is necessary to avoid an error "missing file lib/stdio-read.c" dnl "expected source file, required through AC_LIBSOURCES, not found". It is dnl also an optimization, to avoid performing a configure check whose result dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING dnl or GNULIB_NONBLOCKING redundant. m4_ifdef([gl_NONBLOCKING_IO], [ gl_NONBLOCKING_IO if test $gl_cv_have_nonblocking != yes; then REPLACE_STDIO_READ_FUNCS=1 AC_LIBOBJ([stdio-read]) fi ]) dnl No need to create extra modules for these functions. Everyone who uses dnl likely needs them. GNULIB_FPRINTF=1 GNULIB_PRINTF=1 GNULIB_VFPRINTF=1 GNULIB_VPRINTF=1 GNULIB_FPUTC=1 GNULIB_PUTC=1 GNULIB_PUTCHAR=1 GNULIB_FPUTS=1 GNULIB_PUTS=1 GNULIB_FWRITE=1 dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c" dnl "expected source file, required through AC_LIBSOURCES, not found". It is dnl also an optimization, to avoid performing a configure check whose result dnl is not used. But it does not make the test of GNULIB_STDIO_H_SIGPIPE or dnl GNULIB_SIGPIPE redundant. m4_ifdef([gl_SIGNAL_SIGPIPE], [ gl_SIGNAL_SIGPIPE if test $gl_cv_header_signal_h_SIGPIPE != yes; then REPLACE_STDIO_WRITE_FUNCS=1 AC_LIBOBJ([stdio-write]) fi ]) dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c" dnl "expected source file, required through AC_LIBSOURCES, not found". It is dnl also an optimization, to avoid performing a configure check whose result dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING dnl or GNULIB_NONBLOCKING redundant. m4_ifdef([gl_NONBLOCKING_IO], [ gl_NONBLOCKING_IO if test $gl_cv_have_nonblocking != yes; then REPLACE_STDIO_WRITE_FUNCS=1 AC_LIBOBJ([stdio-write]) fi ]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use, and which is not dnl guaranteed by both C89 and C11. gl_WARN_ON_USE_PREPARE([[#include ]], [dprintf fpurge fseeko ftello getdelim getline gets pclose popen renameat snprintf tmpfile vdprintf vsnprintf]) AC_REQUIRE([AC_C_RESTRICT]) ]) AC_DEFUN([gl_STDIO_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_STDIO_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_STDIO_H_DEFAULTS], [ GNULIB_DPRINTF=0; AC_SUBST([GNULIB_DPRINTF]) GNULIB_FCLOSE=0; AC_SUBST([GNULIB_FCLOSE]) GNULIB_FDOPEN=0; AC_SUBST([GNULIB_FDOPEN]) GNULIB_FFLUSH=0; AC_SUBST([GNULIB_FFLUSH]) GNULIB_FGETC=0; AC_SUBST([GNULIB_FGETC]) GNULIB_FGETS=0; AC_SUBST([GNULIB_FGETS]) GNULIB_FOPEN=0; AC_SUBST([GNULIB_FOPEN]) GNULIB_FPRINTF=0; AC_SUBST([GNULIB_FPRINTF]) GNULIB_FPRINTF_POSIX=0; AC_SUBST([GNULIB_FPRINTF_POSIX]) GNULIB_FPURGE=0; AC_SUBST([GNULIB_FPURGE]) GNULIB_FPUTC=0; AC_SUBST([GNULIB_FPUTC]) GNULIB_FPUTS=0; AC_SUBST([GNULIB_FPUTS]) GNULIB_FREAD=0; AC_SUBST([GNULIB_FREAD]) GNULIB_FREOPEN=0; AC_SUBST([GNULIB_FREOPEN]) GNULIB_FSCANF=0; AC_SUBST([GNULIB_FSCANF]) GNULIB_FSEEK=0; AC_SUBST([GNULIB_FSEEK]) GNULIB_FSEEKO=0; AC_SUBST([GNULIB_FSEEKO]) GNULIB_FTELL=0; AC_SUBST([GNULIB_FTELL]) GNULIB_FTELLO=0; AC_SUBST([GNULIB_FTELLO]) GNULIB_FWRITE=0; AC_SUBST([GNULIB_FWRITE]) GNULIB_GETC=0; AC_SUBST([GNULIB_GETC]) GNULIB_GETCHAR=0; AC_SUBST([GNULIB_GETCHAR]) GNULIB_GETDELIM=0; AC_SUBST([GNULIB_GETDELIM]) GNULIB_GETLINE=0; AC_SUBST([GNULIB_GETLINE]) GNULIB_OBSTACK_PRINTF=0; AC_SUBST([GNULIB_OBSTACK_PRINTF]) GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX]) GNULIB_PCLOSE=0; AC_SUBST([GNULIB_PCLOSE]) GNULIB_PERROR=0; AC_SUBST([GNULIB_PERROR]) GNULIB_POPEN=0; AC_SUBST([GNULIB_POPEN]) GNULIB_PRINTF=0; AC_SUBST([GNULIB_PRINTF]) GNULIB_PRINTF_POSIX=0; AC_SUBST([GNULIB_PRINTF_POSIX]) GNULIB_PUTC=0; AC_SUBST([GNULIB_PUTC]) GNULIB_PUTCHAR=0; AC_SUBST([GNULIB_PUTCHAR]) GNULIB_PUTS=0; AC_SUBST([GNULIB_PUTS]) GNULIB_REMOVE=0; AC_SUBST([GNULIB_REMOVE]) GNULIB_RENAME=0; AC_SUBST([GNULIB_RENAME]) GNULIB_RENAMEAT=0; AC_SUBST([GNULIB_RENAMEAT]) GNULIB_SCANF=0; AC_SUBST([GNULIB_SCANF]) GNULIB_SNPRINTF=0; AC_SUBST([GNULIB_SNPRINTF]) GNULIB_SPRINTF_POSIX=0; AC_SUBST([GNULIB_SPRINTF_POSIX]) GNULIB_STDIO_H_NONBLOCKING=0; AC_SUBST([GNULIB_STDIO_H_NONBLOCKING]) GNULIB_STDIO_H_SIGPIPE=0; AC_SUBST([GNULIB_STDIO_H_SIGPIPE]) GNULIB_TMPFILE=0; AC_SUBST([GNULIB_TMPFILE]) GNULIB_VASPRINTF=0; AC_SUBST([GNULIB_VASPRINTF]) GNULIB_VFSCANF=0; AC_SUBST([GNULIB_VFSCANF]) GNULIB_VSCANF=0; AC_SUBST([GNULIB_VSCANF]) GNULIB_VDPRINTF=0; AC_SUBST([GNULIB_VDPRINTF]) GNULIB_VFPRINTF=0; AC_SUBST([GNULIB_VFPRINTF]) GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX]) GNULIB_VPRINTF=0; AC_SUBST([GNULIB_VPRINTF]) GNULIB_VPRINTF_POSIX=0; AC_SUBST([GNULIB_VPRINTF_POSIX]) GNULIB_VSNPRINTF=0; AC_SUBST([GNULIB_VSNPRINTF]) GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_DECL_FPURGE=1; AC_SUBST([HAVE_DECL_FPURGE]) HAVE_DECL_FSEEKO=1; AC_SUBST([HAVE_DECL_FSEEKO]) HAVE_DECL_FTELLO=1; AC_SUBST([HAVE_DECL_FTELLO]) HAVE_DECL_GETDELIM=1; AC_SUBST([HAVE_DECL_GETDELIM]) HAVE_DECL_GETLINE=1; AC_SUBST([HAVE_DECL_GETLINE]) HAVE_DECL_OBSTACK_PRINTF=1; AC_SUBST([HAVE_DECL_OBSTACK_PRINTF]) HAVE_DECL_SNPRINTF=1; AC_SUBST([HAVE_DECL_SNPRINTF]) HAVE_DECL_VSNPRINTF=1; AC_SUBST([HAVE_DECL_VSNPRINTF]) HAVE_DPRINTF=1; AC_SUBST([HAVE_DPRINTF]) HAVE_FSEEKO=1; AC_SUBST([HAVE_FSEEKO]) HAVE_FTELLO=1; AC_SUBST([HAVE_FTELLO]) HAVE_PCLOSE=1; AC_SUBST([HAVE_PCLOSE]) HAVE_POPEN=1; AC_SUBST([HAVE_POPEN]) HAVE_RENAMEAT=1; AC_SUBST([HAVE_RENAMEAT]) HAVE_VASPRINTF=1; AC_SUBST([HAVE_VASPRINTF]) HAVE_VDPRINTF=1; AC_SUBST([HAVE_VDPRINTF]) REPLACE_DPRINTF=0; AC_SUBST([REPLACE_DPRINTF]) REPLACE_FCLOSE=0; AC_SUBST([REPLACE_FCLOSE]) REPLACE_FDOPEN=0; AC_SUBST([REPLACE_FDOPEN]) REPLACE_FFLUSH=0; AC_SUBST([REPLACE_FFLUSH]) REPLACE_FOPEN=0; AC_SUBST([REPLACE_FOPEN]) REPLACE_FPRINTF=0; AC_SUBST([REPLACE_FPRINTF]) REPLACE_FPURGE=0; AC_SUBST([REPLACE_FPURGE]) REPLACE_FREOPEN=0; AC_SUBST([REPLACE_FREOPEN]) REPLACE_FSEEK=0; AC_SUBST([REPLACE_FSEEK]) REPLACE_FSEEKO=0; AC_SUBST([REPLACE_FSEEKO]) REPLACE_FTELL=0; AC_SUBST([REPLACE_FTELL]) REPLACE_FTELLO=0; AC_SUBST([REPLACE_FTELLO]) REPLACE_GETDELIM=0; AC_SUBST([REPLACE_GETDELIM]) REPLACE_GETLINE=0; AC_SUBST([REPLACE_GETLINE]) REPLACE_OBSTACK_PRINTF=0; AC_SUBST([REPLACE_OBSTACK_PRINTF]) REPLACE_PERROR=0; AC_SUBST([REPLACE_PERROR]) REPLACE_POPEN=0; AC_SUBST([REPLACE_POPEN]) REPLACE_PRINTF=0; AC_SUBST([REPLACE_PRINTF]) REPLACE_REMOVE=0; AC_SUBST([REPLACE_REMOVE]) REPLACE_RENAME=0; AC_SUBST([REPLACE_RENAME]) REPLACE_RENAMEAT=0; AC_SUBST([REPLACE_RENAMEAT]) REPLACE_SNPRINTF=0; AC_SUBST([REPLACE_SNPRINTF]) REPLACE_SPRINTF=0; AC_SUBST([REPLACE_SPRINTF]) REPLACE_STDIO_READ_FUNCS=0; AC_SUBST([REPLACE_STDIO_READ_FUNCS]) REPLACE_STDIO_WRITE_FUNCS=0; AC_SUBST([REPLACE_STDIO_WRITE_FUNCS]) REPLACE_TMPFILE=0; AC_SUBST([REPLACE_TMPFILE]) REPLACE_VASPRINTF=0; AC_SUBST([REPLACE_VASPRINTF]) REPLACE_VDPRINTF=0; AC_SUBST([REPLACE_VDPRINTF]) REPLACE_VFPRINTF=0; AC_SUBST([REPLACE_VFPRINTF]) REPLACE_VPRINTF=0; AC_SUBST([REPLACE_VPRINTF]) REPLACE_VSNPRINTF=0; AC_SUBST([REPLACE_VSNPRINTF]) REPLACE_VSPRINTF=0; AC_SUBST([REPLACE_VSPRINTF]) ]) # stdlib_h.m4 serial 49 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_STDLIB_H], [ AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) gl_NEXT_HEADERS([stdlib.h]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use, and which is not dnl guaranteed by C89. gl_WARN_ON_USE_PREPARE([[#include #if HAVE_SYS_LOADAVG_H /* OpenIndiana has a bug: must be included before . */ # include # include #endif #if HAVE_RANDOM_H # include #endif ]], [_Exit atoll canonicalize_file_name getloadavg getsubopt grantpt initstate initstate_r mbtowc mkdtemp mkostemp mkostemps mkstemp mkstemps posix_openpt ptsname ptsname_r qsort_r random random_r reallocarray realpath rpmatch secure_getenv setenv setstate setstate_r srandom srandom_r strtod strtold strtoll strtoull unlockpt unsetenv]) AC_REQUIRE([AC_C_RESTRICT]) ]) AC_DEFUN([gl_STDLIB_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_STDLIB_H_DEFAULTS], [ GNULIB__EXIT=0; AC_SUBST([GNULIB__EXIT]) GNULIB_ATOLL=0; AC_SUBST([GNULIB_ATOLL]) GNULIB_CALLOC_POSIX=0; AC_SUBST([GNULIB_CALLOC_POSIX]) GNULIB_CANONICALIZE_FILE_NAME=0; AC_SUBST([GNULIB_CANONICALIZE_FILE_NAME]) GNULIB_GETLOADAVG=0; AC_SUBST([GNULIB_GETLOADAVG]) GNULIB_GETSUBOPT=0; AC_SUBST([GNULIB_GETSUBOPT]) GNULIB_GRANTPT=0; AC_SUBST([GNULIB_GRANTPT]) GNULIB_MALLOC_POSIX=0; AC_SUBST([GNULIB_MALLOC_POSIX]) GNULIB_MBTOWC=0; AC_SUBST([GNULIB_MBTOWC]) GNULIB_MKDTEMP=0; AC_SUBST([GNULIB_MKDTEMP]) GNULIB_MKOSTEMP=0; AC_SUBST([GNULIB_MKOSTEMP]) GNULIB_MKOSTEMPS=0; AC_SUBST([GNULIB_MKOSTEMPS]) GNULIB_MKSTEMP=0; AC_SUBST([GNULIB_MKSTEMP]) GNULIB_MKSTEMPS=0; AC_SUBST([GNULIB_MKSTEMPS]) GNULIB_POSIX_OPENPT=0; AC_SUBST([GNULIB_POSIX_OPENPT]) GNULIB_PTSNAME=0; AC_SUBST([GNULIB_PTSNAME]) GNULIB_PTSNAME_R=0; AC_SUBST([GNULIB_PTSNAME_R]) GNULIB_PUTENV=0; AC_SUBST([GNULIB_PUTENV]) GNULIB_QSORT_R=0; AC_SUBST([GNULIB_QSORT_R]) GNULIB_RANDOM=0; AC_SUBST([GNULIB_RANDOM]) GNULIB_RANDOM_R=0; AC_SUBST([GNULIB_RANDOM_R]) GNULIB_REALLOCARRAY=0; AC_SUBST([GNULIB_REALLOCARRAY]) GNULIB_REALLOC_POSIX=0; AC_SUBST([GNULIB_REALLOC_POSIX]) GNULIB_REALPATH=0; AC_SUBST([GNULIB_REALPATH]) GNULIB_RPMATCH=0; AC_SUBST([GNULIB_RPMATCH]) GNULIB_SECURE_GETENV=0; AC_SUBST([GNULIB_SECURE_GETENV]) GNULIB_SETENV=0; AC_SUBST([GNULIB_SETENV]) GNULIB_STRTOD=0; AC_SUBST([GNULIB_STRTOD]) GNULIB_STRTOLD=0; AC_SUBST([GNULIB_STRTOLD]) GNULIB_STRTOLL=0; AC_SUBST([GNULIB_STRTOLL]) GNULIB_STRTOULL=0; AC_SUBST([GNULIB_STRTOULL]) GNULIB_SYSTEM_POSIX=0; AC_SUBST([GNULIB_SYSTEM_POSIX]) GNULIB_UNLOCKPT=0; AC_SUBST([GNULIB_UNLOCKPT]) GNULIB_UNSETENV=0; AC_SUBST([GNULIB_UNSETENV]) GNULIB_WCTOMB=0; AC_SUBST([GNULIB_WCTOMB]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE__EXIT=1; AC_SUBST([HAVE__EXIT]) HAVE_ATOLL=1; AC_SUBST([HAVE_ATOLL]) HAVE_CANONICALIZE_FILE_NAME=1; AC_SUBST([HAVE_CANONICALIZE_FILE_NAME]) HAVE_DECL_GETLOADAVG=1; AC_SUBST([HAVE_DECL_GETLOADAVG]) HAVE_GETSUBOPT=1; AC_SUBST([HAVE_GETSUBOPT]) HAVE_GRANTPT=1; AC_SUBST([HAVE_GRANTPT]) HAVE_INITSTATE=1; AC_SUBST([HAVE_INITSTATE]) HAVE_DECL_INITSTATE=1; AC_SUBST([HAVE_DECL_INITSTATE]) HAVE_MBTOWC=1; AC_SUBST([HAVE_MBTOWC]) HAVE_MKDTEMP=1; AC_SUBST([HAVE_MKDTEMP]) HAVE_MKOSTEMP=1; AC_SUBST([HAVE_MKOSTEMP]) HAVE_MKOSTEMPS=1; AC_SUBST([HAVE_MKOSTEMPS]) HAVE_MKSTEMP=1; AC_SUBST([HAVE_MKSTEMP]) HAVE_MKSTEMPS=1; AC_SUBST([HAVE_MKSTEMPS]) HAVE_POSIX_OPENPT=1; AC_SUBST([HAVE_POSIX_OPENPT]) HAVE_PTSNAME=1; AC_SUBST([HAVE_PTSNAME]) HAVE_PTSNAME_R=1; AC_SUBST([HAVE_PTSNAME_R]) HAVE_QSORT_R=1; AC_SUBST([HAVE_QSORT_R]) HAVE_RANDOM=1; AC_SUBST([HAVE_RANDOM]) HAVE_RANDOM_H=1; AC_SUBST([HAVE_RANDOM_H]) HAVE_RANDOM_R=1; AC_SUBST([HAVE_RANDOM_R]) HAVE_REALLOCARRAY=1; AC_SUBST([HAVE_REALLOCARRAY]) HAVE_REALPATH=1; AC_SUBST([HAVE_REALPATH]) HAVE_RPMATCH=1; AC_SUBST([HAVE_RPMATCH]) HAVE_SECURE_GETENV=1; AC_SUBST([HAVE_SECURE_GETENV]) HAVE_SETENV=1; AC_SUBST([HAVE_SETENV]) HAVE_DECL_SETENV=1; AC_SUBST([HAVE_DECL_SETENV]) HAVE_SETSTATE=1; AC_SUBST([HAVE_SETSTATE]) HAVE_DECL_SETSTATE=1; AC_SUBST([HAVE_DECL_SETSTATE]) HAVE_STRTOD=1; AC_SUBST([HAVE_STRTOD]) HAVE_STRTOLD=1; AC_SUBST([HAVE_STRTOLD]) HAVE_STRTOLL=1; AC_SUBST([HAVE_STRTOLL]) HAVE_STRTOULL=1; AC_SUBST([HAVE_STRTOULL]) HAVE_STRUCT_RANDOM_DATA=1; AC_SUBST([HAVE_STRUCT_RANDOM_DATA]) HAVE_SYS_LOADAVG_H=0; AC_SUBST([HAVE_SYS_LOADAVG_H]) HAVE_UNLOCKPT=1; AC_SUBST([HAVE_UNLOCKPT]) HAVE_DECL_UNSETENV=1; AC_SUBST([HAVE_DECL_UNSETENV]) REPLACE_CALLOC=0; AC_SUBST([REPLACE_CALLOC]) REPLACE_CANONICALIZE_FILE_NAME=0; AC_SUBST([REPLACE_CANONICALIZE_FILE_NAME]) REPLACE_INITSTATE=0; AC_SUBST([REPLACE_INITSTATE]) REPLACE_MALLOC=0; AC_SUBST([REPLACE_MALLOC]) REPLACE_MBTOWC=0; AC_SUBST([REPLACE_MBTOWC]) REPLACE_MKSTEMP=0; AC_SUBST([REPLACE_MKSTEMP]) REPLACE_PTSNAME=0; AC_SUBST([REPLACE_PTSNAME]) REPLACE_PTSNAME_R=0; AC_SUBST([REPLACE_PTSNAME_R]) REPLACE_PUTENV=0; AC_SUBST([REPLACE_PUTENV]) REPLACE_QSORT_R=0; AC_SUBST([REPLACE_QSORT_R]) REPLACE_RANDOM=0; AC_SUBST([REPLACE_RANDOM]) REPLACE_RANDOM_R=0; AC_SUBST([REPLACE_RANDOM_R]) REPLACE_REALLOC=0; AC_SUBST([REPLACE_REALLOC]) REPLACE_REALPATH=0; AC_SUBST([REPLACE_REALPATH]) REPLACE_SETENV=0; AC_SUBST([REPLACE_SETENV]) REPLACE_SETSTATE=0; AC_SUBST([REPLACE_SETSTATE]) REPLACE_STRTOD=0; AC_SUBST([REPLACE_STRTOD]) REPLACE_STRTOLD=0; AC_SUBST([REPLACE_STRTOLD]) REPLACE_UNSETENV=0; AC_SUBST([REPLACE_UNSETENV]) REPLACE_WCTOMB=0; AC_SUBST([REPLACE_WCTOMB]) ]) # strcase.m4 serial 11 dnl Copyright (C) 2002, 2005-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_STRCASE], [ gl_FUNC_STRCASECMP gl_FUNC_STRNCASECMP ]) AC_DEFUN([gl_FUNC_STRCASECMP], [ AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS]) AC_CHECK_FUNCS([strcasecmp]) if test $ac_cv_func_strcasecmp = no; then HAVE_STRCASECMP=0 fi ]) AC_DEFUN([gl_FUNC_STRNCASECMP], [ AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS]) AC_CHECK_FUNCS([strncasecmp]) if test $ac_cv_func_strncasecmp = yes; then HAVE_STRNCASECMP=1 else HAVE_STRNCASECMP=0 fi AC_CHECK_DECLS([strncasecmp]) if test $ac_cv_have_decl_strncasecmp = no; then HAVE_DECL_STRNCASECMP=0 fi ]) # Prerequisites of lib/strcasecmp.c. AC_DEFUN([gl_PREREQ_STRCASECMP], [ : ]) # Prerequisites of lib/strncasecmp.c. AC_DEFUN([gl_PREREQ_STRNCASECMP], [ : ]) # strcasestr.m4 serial 25 dnl Copyright (C) 2005, 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Check that strcasestr is present and works. AC_DEFUN([gl_FUNC_STRCASESTR_SIMPLE], [ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) dnl Persuade glibc to declare strcasestr(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gl_FUNC_MEMCHR]) AC_CHECK_FUNCS([strcasestr]) if test $ac_cv_func_strcasestr = no; then HAVE_STRCASESTR=0 else if test $HAVE_MEMCHR = 0 || test $REPLACE_MEMCHR = 1; then REPLACE_STRCASESTR=1 else dnl Detect https://sourceware.org/bugzilla/show_bug.cgi?id=12092 dnl and https://sourceware.org/bugzilla/show_bug.cgi?id=23637. AC_CACHE_CHECK([whether strcasestr works], [gl_cv_func_strcasestr_works_always], [AC_RUN_IFELSE( [AC_LANG_PROGRAM([[ #include /* for strcasestr */ #ifdef __GNU_LIBRARY__ #include #if __GLIBC__ == 2 && __GLIBC_MINOR__ == 28 Unlucky user #endif #endif #define P "_EF_BF_BD" #define HAYSTACK "F_BD_CE_BD" P P P P "_C3_88_20" P P P "_C3_A7_20" P #define NEEDLE P P P P P ]], [[return !!strcasestr (HAYSTACK, NEEDLE); ]])], [gl_cv_func_strcasestr_works_always=yes], [gl_cv_func_strcasestr_works_always=no], [dnl glibc 2.12 and cygwin 1.7.7 have a known bug. uClibc is not dnl affected, since it uses different source code for strcasestr dnl than glibc. dnl Assume that it works on all other platforms, even if it is not dnl linear. AC_EGREP_CPP([Lucky user], [ #ifdef __GNU_LIBRARY__ #include #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \ || defined __UCLIBC__ Lucky user #endif #elif defined __CYGWIN__ #include #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7) Lucky user #endif #else Lucky user #endif ], [gl_cv_func_strcasestr_works_always="guessing yes"], [gl_cv_func_strcasestr_works_always="$gl_cross_guess_normal"]) ]) ]) case "$gl_cv_func_strcasestr_works_always" in *yes) ;; *) REPLACE_STRCASESTR=1 ;; esac fi fi ]) # gl_FUNC_STRCASESTR_SIMPLE dnl Additionally, check that strcasestr is efficient. AC_DEFUN([gl_FUNC_STRCASESTR], [ AC_REQUIRE([gl_FUNC_STRCASESTR_SIMPLE]) if test $HAVE_STRCASESTR = 1 && test $REPLACE_STRCASESTR = 0; then AC_CACHE_CHECK([whether strcasestr works in linear time], [gl_cv_func_strcasestr_linear], [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include /* for signal */ #include /* for strcasestr */ #include /* for malloc */ #include /* for alarm */ static void quit (int sig) { _exit (sig + 128); } ]], [[ int result = 0; size_t m = 1000000; char *haystack = (char *) malloc (2 * m + 2); char *needle = (char *) malloc (m + 2); /* Failure to compile this test due to missing alarm is okay, since all such platforms (mingw) also lack strcasestr. */ signal (SIGALRM, quit); alarm (5); /* Check for quadratic performance. */ if (haystack && needle) { memset (haystack, 'A', 2 * m); haystack[2 * m] = 'B'; haystack[2 * m + 1] = 0; memset (needle, 'A', m); needle[m] = 'B'; needle[m + 1] = 0; if (!strcasestr (haystack, needle)) result |= 1; } /* Free allocated memory, in case some sanitizer is watching. */ free (haystack); free (needle); return result; ]])], [gl_cv_func_strcasestr_linear=yes], [gl_cv_func_strcasestr_linear=no], [dnl Only glibc > 2.12 and cygwin > 1.7.7 are known to have a dnl strcasestr that works in linear time. AC_EGREP_CPP([Lucky user], [ #include #ifdef __GNU_LIBRARY__ #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 12) || (__GLIBC__ > 2)) \ && !defined __UCLIBC__ Lucky user #endif #endif #ifdef __CYGWIN__ #include #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 7) Lucky user #endif #endif ], [gl_cv_func_strcasestr_linear="guessing yes"], [gl_cv_func_strcasestr_linear="$gl_cross_guess_normal"]) ]) ]) case "$gl_cv_func_strcasestr_linear" in *yes) ;; *) REPLACE_STRCASESTR=1 ;; esac fi ]) # gl_FUNC_STRCASESTR # Prerequisites of lib/strcasestr.c. AC_DEFUN([gl_PREREQ_STRCASESTR], [ : ]) # Configure a GNU-like replacement for . # Copyright (C) 2007-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # serial 23 # Written by Paul Eggert. AC_DEFUN([gl_HEADER_STRING_H], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_HEADER_STRING_H_BODY]) ]) AC_DEFUN([gl_HEADER_STRING_H_BODY], [ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) gl_NEXT_HEADERS([string.h]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use, and which is not dnl guaranteed by C89. gl_WARN_ON_USE_PREPARE([[#include ]], [ffsl ffsll memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul strdup strncat strndup strnlen strpbrk strsep strcasestr strtok_r strerror_r strsignal strverscmp]) AC_REQUIRE([AC_C_RESTRICT]) ]) AC_DEFUN([gl_STRING_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS], [ GNULIB_EXPLICIT_BZERO=0; AC_SUBST([GNULIB_EXPLICIT_BZERO]) GNULIB_FFSL=0; AC_SUBST([GNULIB_FFSL]) GNULIB_FFSLL=0; AC_SUBST([GNULIB_FFSLL]) GNULIB_MEMCHR=0; AC_SUBST([GNULIB_MEMCHR]) GNULIB_MEMMEM=0; AC_SUBST([GNULIB_MEMMEM]) GNULIB_MEMPCPY=0; AC_SUBST([GNULIB_MEMPCPY]) GNULIB_MEMRCHR=0; AC_SUBST([GNULIB_MEMRCHR]) GNULIB_RAWMEMCHR=0; AC_SUBST([GNULIB_RAWMEMCHR]) GNULIB_STPCPY=0; AC_SUBST([GNULIB_STPCPY]) GNULIB_STPNCPY=0; AC_SUBST([GNULIB_STPNCPY]) GNULIB_STRCHRNUL=0; AC_SUBST([GNULIB_STRCHRNUL]) GNULIB_STRDUP=0; AC_SUBST([GNULIB_STRDUP]) GNULIB_STRNCAT=0; AC_SUBST([GNULIB_STRNCAT]) GNULIB_STRNDUP=0; AC_SUBST([GNULIB_STRNDUP]) GNULIB_STRNLEN=0; AC_SUBST([GNULIB_STRNLEN]) GNULIB_STRPBRK=0; AC_SUBST([GNULIB_STRPBRK]) GNULIB_STRSEP=0; AC_SUBST([GNULIB_STRSEP]) GNULIB_STRSTR=0; AC_SUBST([GNULIB_STRSTR]) GNULIB_STRCASESTR=0; AC_SUBST([GNULIB_STRCASESTR]) GNULIB_STRTOK_R=0; AC_SUBST([GNULIB_STRTOK_R]) GNULIB_MBSLEN=0; AC_SUBST([GNULIB_MBSLEN]) GNULIB_MBSNLEN=0; AC_SUBST([GNULIB_MBSNLEN]) GNULIB_MBSCHR=0; AC_SUBST([GNULIB_MBSCHR]) GNULIB_MBSRCHR=0; AC_SUBST([GNULIB_MBSRCHR]) GNULIB_MBSSTR=0; AC_SUBST([GNULIB_MBSSTR]) GNULIB_MBSCASECMP=0; AC_SUBST([GNULIB_MBSCASECMP]) GNULIB_MBSNCASECMP=0; AC_SUBST([GNULIB_MBSNCASECMP]) GNULIB_MBSPCASECMP=0; AC_SUBST([GNULIB_MBSPCASECMP]) GNULIB_MBSCASESTR=0; AC_SUBST([GNULIB_MBSCASESTR]) GNULIB_MBSCSPN=0; AC_SUBST([GNULIB_MBSCSPN]) GNULIB_MBSPBRK=0; AC_SUBST([GNULIB_MBSPBRK]) GNULIB_MBSSPN=0; AC_SUBST([GNULIB_MBSSPN]) GNULIB_MBSSEP=0; AC_SUBST([GNULIB_MBSSEP]) GNULIB_MBSTOK_R=0; AC_SUBST([GNULIB_MBSTOK_R]) GNULIB_STRERROR=0; AC_SUBST([GNULIB_STRERROR]) GNULIB_STRERROR_R=0; AC_SUBST([GNULIB_STRERROR_R]) GNULIB_STRSIGNAL=0; AC_SUBST([GNULIB_STRSIGNAL]) GNULIB_STRVERSCMP=0; AC_SUBST([GNULIB_STRVERSCMP]) HAVE_MBSLEN=0; AC_SUBST([HAVE_MBSLEN]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_EXPLICIT_BZERO=1; AC_SUBST([HAVE_EXPLICIT_BZERO]) HAVE_FFSL=1; AC_SUBST([HAVE_FFSL]) HAVE_FFSLL=1; AC_SUBST([HAVE_FFSLL]) HAVE_MEMCHR=1; AC_SUBST([HAVE_MEMCHR]) HAVE_DECL_MEMMEM=1; AC_SUBST([HAVE_DECL_MEMMEM]) HAVE_MEMPCPY=1; AC_SUBST([HAVE_MEMPCPY]) HAVE_DECL_MEMRCHR=1; AC_SUBST([HAVE_DECL_MEMRCHR]) HAVE_RAWMEMCHR=1; AC_SUBST([HAVE_RAWMEMCHR]) HAVE_STPCPY=1; AC_SUBST([HAVE_STPCPY]) HAVE_STPNCPY=1; AC_SUBST([HAVE_STPNCPY]) HAVE_STRCHRNUL=1; AC_SUBST([HAVE_STRCHRNUL]) HAVE_DECL_STRDUP=1; AC_SUBST([HAVE_DECL_STRDUP]) HAVE_DECL_STRNDUP=1; AC_SUBST([HAVE_DECL_STRNDUP]) HAVE_DECL_STRNLEN=1; AC_SUBST([HAVE_DECL_STRNLEN]) HAVE_STRPBRK=1; AC_SUBST([HAVE_STRPBRK]) HAVE_STRSEP=1; AC_SUBST([HAVE_STRSEP]) HAVE_STRCASESTR=1; AC_SUBST([HAVE_STRCASESTR]) HAVE_DECL_STRTOK_R=1; AC_SUBST([HAVE_DECL_STRTOK_R]) HAVE_DECL_STRERROR_R=1; AC_SUBST([HAVE_DECL_STRERROR_R]) HAVE_DECL_STRSIGNAL=1; AC_SUBST([HAVE_DECL_STRSIGNAL]) HAVE_STRVERSCMP=1; AC_SUBST([HAVE_STRVERSCMP]) REPLACE_MEMCHR=0; AC_SUBST([REPLACE_MEMCHR]) REPLACE_MEMMEM=0; AC_SUBST([REPLACE_MEMMEM]) REPLACE_STPNCPY=0; AC_SUBST([REPLACE_STPNCPY]) REPLACE_STRCHRNUL=0; AC_SUBST([REPLACE_STRCHRNUL]) REPLACE_STRDUP=0; AC_SUBST([REPLACE_STRDUP]) REPLACE_STRNCAT=0; AC_SUBST([REPLACE_STRNCAT]) REPLACE_STRNDUP=0; AC_SUBST([REPLACE_STRNDUP]) REPLACE_STRNLEN=0; AC_SUBST([REPLACE_STRNLEN]) REPLACE_STRSTR=0; AC_SUBST([REPLACE_STRSTR]) REPLACE_STRCASESTR=0; AC_SUBST([REPLACE_STRCASESTR]) REPLACE_STRTOK_R=0; AC_SUBST([REPLACE_STRTOK_R]) REPLACE_STRERROR=0; AC_SUBST([REPLACE_STRERROR]) REPLACE_STRERROR_R=0; AC_SUBST([REPLACE_STRERROR_R]) REPLACE_STRSIGNAL=0; AC_SUBST([REPLACE_STRSIGNAL]) UNDEFINE_STRTOK_R=0; AC_SUBST([UNDEFINE_STRTOK_R]) ]) # Configure a replacement for . # serial 6 # Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_HEADER_STRINGS_H], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_HEADER_STRINGS_H_BODY]) ]) AC_DEFUN([gl_HEADER_STRINGS_H_BODY], [ AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS]) gl_CHECK_NEXT_HEADERS([strings.h]) if test $ac_cv_header_strings_h = yes; then HAVE_STRINGS_H=1 else HAVE_STRINGS_H=0 fi AC_SUBST([HAVE_STRINGS_H]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[ /* Minix 3.1.8 has a bug: must be included before . */ #include #include ]], [ffs strcasecmp strncasecmp]) ]) AC_DEFUN([gl_STRINGS_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) ]) AC_DEFUN([gl_HEADER_STRINGS_H_DEFAULTS], [ GNULIB_FFS=0; AC_SUBST([GNULIB_FFS]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_FFS=1; AC_SUBST([HAVE_FFS]) HAVE_STRCASECMP=1; AC_SUBST([HAVE_STRCASECMP]) HAVE_DECL_STRNCASECMP=1; AC_SUBST([HAVE_DECL_STRNCASECMP]) ]) # strnlen.m4 serial 13 dnl Copyright (C) 2002-2003, 2005-2007, 2009-2020 Free Software Foundation, dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_STRNLEN], [ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) dnl Persuade glibc to declare strnlen(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_CHECK_DECLS_ONCE([strnlen]) if test $ac_cv_have_decl_strnlen = no; then HAVE_DECL_STRNLEN=0 else m4_pushdef([AC_LIBOBJ], [:]) dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]). AC_FUNC_STRNLEN m4_popdef([AC_LIBOBJ]) if test $ac_cv_func_strnlen_working = no; then REPLACE_STRNLEN=1 fi fi ]) # Prerequisites of lib/strnlen.c. AC_DEFUN([gl_PREREQ_STRNLEN], [:]) # sys_socket_h.m4 serial 25 dnl Copyright (C) 2005-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Simon Josefsson. AC_DEFUN([gl_HEADER_SYS_SOCKET], [ AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl On OSF/1, the functions recv(), send(), recvfrom(), sendto() have dnl old-style declarations (with return type 'int' instead of 'ssize_t') dnl unless _POSIX_PII_SOCKET is defined. case "$host_os" in osf*) AC_DEFINE([_POSIX_PII_SOCKET], [1], [Define to 1 in order to get the POSIX compatible declarations of socket functions.]) ;; esac AC_CACHE_CHECK([whether is self-contained], [gl_cv_header_sys_socket_h_selfcontained], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[]])], [gl_cv_header_sys_socket_h_selfcontained=yes], [gl_cv_header_sys_socket_h_selfcontained=no]) ]) if test $gl_cv_header_sys_socket_h_selfcontained = yes; then dnl If the shutdown function exists, should define dnl SHUT_RD, SHUT_WR, SHUT_RDWR. AC_CHECK_FUNCS([shutdown]) if test $ac_cv_func_shutdown = yes; then AC_CACHE_CHECK([whether defines the SHUT_* macros], [gl_cv_header_sys_socket_h_shut], [ AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include ]], [[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])], [gl_cv_header_sys_socket_h_shut=yes], [gl_cv_header_sys_socket_h_shut=no]) ]) if test $gl_cv_header_sys_socket_h_shut = no; then SYS_SOCKET_H='sys/socket.h' fi fi fi # We need to check for ws2tcpip.h now. gl_PREREQ_SYS_H_SOCKET AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[ /* sys/types.h is not needed according to POSIX, but the sys/socket.h in i386-unknown-freebsd4.10 and powerpc-apple-darwin5.5 required it. */ #include #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_WS2TCPIP_H #include #endif ]) if test $ac_cv_type_struct_sockaddr_storage = no; then HAVE_STRUCT_SOCKADDR_STORAGE=0 fi if test $ac_cv_type_sa_family_t = no; then HAVE_SA_FAMILY_T=0 fi if test $ac_cv_type_struct_sockaddr_storage != no; then AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family], [], [HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0], [#include #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_WS2TCPIP_H #include #endif ]) fi if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \ || test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then SYS_SOCKET_H='sys/socket.h' fi gl_PREREQ_SYS_H_WINSOCK2 dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[ /* Some systems require prerequisite headers. */ #include #include ]], [socket connect accept bind getpeername getsockname getsockopt listen recv send recvfrom sendto setsockopt shutdown accept4]) AC_REQUIRE([AC_C_RESTRICT]) ]) AC_DEFUN([gl_PREREQ_SYS_H_SOCKET], [ dnl Check prerequisites of the replacement. AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) gl_CHECK_NEXT_HEADERS([sys/socket.h]) if test $ac_cv_header_sys_socket_h = yes; then HAVE_SYS_SOCKET_H=1 else HAVE_SYS_SOCKET_H=0 fi AC_SUBST([HAVE_SYS_SOCKET_H]) gl_PREREQ_SYS_H_WS2TCPIP ]) # Common prerequisites of the replacement and of the # replacement. # Sets and substitutes HAVE_WINSOCK2_H. AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2], [ m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])]) m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])]) AC_CHECK_HEADERS_ONCE([sys/socket.h]) if test $ac_cv_header_sys_socket_h != yes; then dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make dnl the check for those headers unconditional; yet cygwin reports dnl that the headers are present but cannot be compiled (since on dnl cygwin, all socket information should come from sys/socket.h). AC_CHECK_HEADERS([winsock2.h]) fi if test "$ac_cv_header_winsock2_h" = yes; then HAVE_WINSOCK2_H=1 UNISTD_H_HAVE_WINSOCK2_H=1 SYS_IOCTL_H_HAVE_WINSOCK2_H=1 else HAVE_WINSOCK2_H=0 fi AC_SUBST([HAVE_WINSOCK2_H]) ]) # Common prerequisites of the replacement and of the # replacement. # Sets and substitutes HAVE_WS2TCPIP_H. AC_DEFUN([gl_PREREQ_SYS_H_WS2TCPIP], [ AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) if test $ac_cv_header_sys_socket_h = yes; then HAVE_WS2TCPIP_H=0 else if test $ac_cv_header_ws2tcpip_h = yes; then HAVE_WS2TCPIP_H=1 else HAVE_WS2TCPIP_H=0 fi fi AC_SUBST([HAVE_WS2TCPIP_H]) ]) AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS], [ GNULIB_SOCKET=0; AC_SUBST([GNULIB_SOCKET]) GNULIB_CONNECT=0; AC_SUBST([GNULIB_CONNECT]) GNULIB_ACCEPT=0; AC_SUBST([GNULIB_ACCEPT]) GNULIB_BIND=0; AC_SUBST([GNULIB_BIND]) GNULIB_GETPEERNAME=0; AC_SUBST([GNULIB_GETPEERNAME]) GNULIB_GETSOCKNAME=0; AC_SUBST([GNULIB_GETSOCKNAME]) GNULIB_GETSOCKOPT=0; AC_SUBST([GNULIB_GETSOCKOPT]) GNULIB_LISTEN=0; AC_SUBST([GNULIB_LISTEN]) GNULIB_RECV=0; AC_SUBST([GNULIB_RECV]) GNULIB_SEND=0; AC_SUBST([GNULIB_SEND]) GNULIB_RECVFROM=0; AC_SUBST([GNULIB_RECVFROM]) GNULIB_SENDTO=0; AC_SUBST([GNULIB_SENDTO]) GNULIB_SETSOCKOPT=0; AC_SUBST([GNULIB_SETSOCKOPT]) GNULIB_SHUTDOWN=0; AC_SUBST([GNULIB_SHUTDOWN]) GNULIB_ACCEPT4=0; AC_SUBST([GNULIB_ACCEPT4]) HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE]) HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY]) HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T]) HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4]) ]) # sys_stat_h.m4 serial 33 -*- Autoconf -*- dnl Copyright (C) 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Eric Blake. dnl Provide a GNU-like . AC_DEFUN([gl_HEADER_SYS_STAT_H], [ AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) dnl Check for broken stat macros. AC_REQUIRE([AC_HEADER_STAT]) gl_CHECK_NEXT_HEADERS([sys/stat.h]) dnl Ensure the type mode_t gets defined. AC_REQUIRE([AC_TYPE_MODE_T]) dnl Whether to enable precise timestamps in 'struct stat'. m4_ifdef([gl_WINDOWS_STAT_TIMESPEC], [ AC_REQUIRE([gl_WINDOWS_STAT_TIMESPEC]) ], [ WINDOWS_STAT_TIMESPEC=0 ]) AC_SUBST([WINDOWS_STAT_TIMESPEC]) dnl Whether to ensure that struct stat.st_size is 64-bit wide. m4_ifdef([gl_LARGEFILE], [ AC_REQUIRE([gl_LARGEFILE]) ], [ WINDOWS_64_BIT_ST_SIZE=0 ]) AC_SUBST([WINDOWS_64_BIT_ST_SIZE]) dnl Define types that are supposed to be defined in or dnl . AC_CHECK_TYPE([nlink_t], [], [AC_DEFINE([nlink_t], [int], [Define to the type of st_nlink in struct stat, or a supertype.])], [#include #include ]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [fchmodat fstat fstatat futimens lchmod lstat mkdirat mkfifo mkfifoat mknod mknodat stat utimensat]) AC_REQUIRE([AC_C_RESTRICT]) ]) AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_SYS_STAT_H_DEFAULTS], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl for REPLACE_FCHDIR GNULIB_FCHMODAT=0; AC_SUBST([GNULIB_FCHMODAT]) GNULIB_FSTAT=0; AC_SUBST([GNULIB_FSTAT]) GNULIB_FSTATAT=0; AC_SUBST([GNULIB_FSTATAT]) GNULIB_FUTIMENS=0; AC_SUBST([GNULIB_FUTIMENS]) GNULIB_LCHMOD=0; AC_SUBST([GNULIB_LCHMOD]) GNULIB_LSTAT=0; AC_SUBST([GNULIB_LSTAT]) GNULIB_MKDIRAT=0; AC_SUBST([GNULIB_MKDIRAT]) GNULIB_MKFIFO=0; AC_SUBST([GNULIB_MKFIFO]) GNULIB_MKFIFOAT=0; AC_SUBST([GNULIB_MKFIFOAT]) GNULIB_MKNOD=0; AC_SUBST([GNULIB_MKNOD]) GNULIB_MKNODAT=0; AC_SUBST([GNULIB_MKNODAT]) GNULIB_STAT=0; AC_SUBST([GNULIB_STAT]) GNULIB_UTIMENSAT=0; AC_SUBST([GNULIB_UTIMENSAT]) GNULIB_OVERRIDES_STRUCT_STAT=0; AC_SUBST([GNULIB_OVERRIDES_STRUCT_STAT]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_FCHMODAT=1; AC_SUBST([HAVE_FCHMODAT]) HAVE_FSTATAT=1; AC_SUBST([HAVE_FSTATAT]) HAVE_FUTIMENS=1; AC_SUBST([HAVE_FUTIMENS]) HAVE_LCHMOD=1; AC_SUBST([HAVE_LCHMOD]) HAVE_LSTAT=1; AC_SUBST([HAVE_LSTAT]) HAVE_MKDIRAT=1; AC_SUBST([HAVE_MKDIRAT]) HAVE_MKFIFO=1; AC_SUBST([HAVE_MKFIFO]) HAVE_MKFIFOAT=1; AC_SUBST([HAVE_MKFIFOAT]) HAVE_MKNOD=1; AC_SUBST([HAVE_MKNOD]) HAVE_MKNODAT=1; AC_SUBST([HAVE_MKNODAT]) HAVE_UTIMENSAT=1; AC_SUBST([HAVE_UTIMENSAT]) REPLACE_FCHMODAT=0; AC_SUBST([REPLACE_FCHMODAT]) REPLACE_FSTAT=0; AC_SUBST([REPLACE_FSTAT]) REPLACE_FSTATAT=0; AC_SUBST([REPLACE_FSTATAT]) REPLACE_FUTIMENS=0; AC_SUBST([REPLACE_FUTIMENS]) REPLACE_LSTAT=0; AC_SUBST([REPLACE_LSTAT]) REPLACE_MKDIR=0; AC_SUBST([REPLACE_MKDIR]) REPLACE_MKFIFO=0; AC_SUBST([REPLACE_MKFIFO]) REPLACE_MKNOD=0; AC_SUBST([REPLACE_MKNOD]) REPLACE_STAT=0; AC_SUBST([REPLACE_STAT]) REPLACE_UTIMENSAT=0; AC_SUBST([REPLACE_UTIMENSAT]) ]) # Configure a replacement for . # serial 9 # Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # Written by Paul Eggert and Martin Lambers. AC_DEFUN([gl_HEADER_SYS_TIME_H], [ dnl Use AC_REQUIRE here, so that the REPLACE_GETTIMEOFDAY=0 statement dnl below is expanded once only, before all REPLACE_GETTIMEOFDAY=1 dnl statements that occur in other macros. AC_REQUIRE([gl_HEADER_SYS_TIME_H_BODY]) ]) AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY], [ AC_REQUIRE([AC_C_RESTRICT]) AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS]) AC_CHECK_HEADERS_ONCE([sys/time.h]) gl_CHECK_NEXT_HEADERS([sys/time.h]) if test $ac_cv_header_sys_time_h != yes; then HAVE_SYS_TIME_H=0 fi dnl On native Windows with MSVC, 'struct timeval' is defined in dnl only. So include that header in the list. gl_PREREQ_SYS_H_WINSOCK2 AC_CACHE_CHECK([for struct timeval], [gl_cv_sys_struct_timeval], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#if HAVE_SYS_TIME_H #include #endif #include #if HAVE_WINSOCK2_H # include #endif ]], [[static struct timeval x; x.tv_sec = x.tv_usec;]])], [gl_cv_sys_struct_timeval=yes], [gl_cv_sys_struct_timeval=no]) ]) if test $gl_cv_sys_struct_timeval != yes; then HAVE_STRUCT_TIMEVAL=0 else dnl On native Windows with a 64-bit 'time_t', 'struct timeval' is defined dnl (in and for mingw64, in only dnl for MSVC) with a tv_sec field of type 'long' (32-bit!), which is dnl smaller than the 'time_t' type mandated by POSIX. dnl On OpenBSD 5.1 amd64, tv_sec is 64 bits and time_t 32 bits, but dnl that is good enough. AC_CACHE_CHECK([for wide-enough struct timeval.tv_sec member], [gl_cv_sys_struct_timeval_tv_sec], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#if HAVE_SYS_TIME_H #include #endif #include #if HAVE_WINSOCK2_H # include #endif ]], [[static struct timeval x; typedef int verify_tv_sec_type[ sizeof (time_t) <= sizeof x.tv_sec ? 1 : -1 ]; ]])], [gl_cv_sys_struct_timeval_tv_sec=yes], [gl_cv_sys_struct_timeval_tv_sec=no]) ]) if test $gl_cv_sys_struct_timeval_tv_sec != yes; then REPLACE_STRUCT_TIMEVAL=1 fi fi dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[ #if HAVE_SYS_TIME_H # include #endif #include ]], [gettimeofday]) ]) AC_DEFUN([gl_SYS_TIME_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_HEADER_SYS_TIME_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_HEADER_SYS_TIME_H_DEFAULTS], [ GNULIB_GETTIMEOFDAY=0; AC_SUBST([GNULIB_GETTIMEOFDAY]) dnl Assume POSIX behavior unless another module says otherwise. HAVE_GETTIMEOFDAY=1; AC_SUBST([HAVE_GETTIMEOFDAY]) HAVE_STRUCT_TIMEVAL=1; AC_SUBST([HAVE_STRUCT_TIMEVAL]) HAVE_SYS_TIME_H=1; AC_SUBST([HAVE_SYS_TIME_H]) REPLACE_GETTIMEOFDAY=0; AC_SUBST([REPLACE_GETTIMEOFDAY]) REPLACE_STRUCT_TIMEVAL=0; AC_SUBST([REPLACE_STRUCT_TIMEVAL]) ]) # sys_types_h.m4 serial 9 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN_ONCE([gl_SYS_TYPES_H], [ dnl Use sane struct stat types in OpenVMS 8.2 and later. AC_DEFINE([_USE_STD_STAT], 1, [For standard stat data types on VMS.]) AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS]) gl_NEXT_HEADERS([sys/types.h]) dnl Ensure the type pid_t gets defined. AC_REQUIRE([AC_TYPE_PID_T]) dnl Ensure the type mode_t gets defined. AC_REQUIRE([AC_TYPE_MODE_T]) dnl Whether to override the 'off_t' type. AC_REQUIRE([gl_TYPE_OFF_T]) dnl Whether to override the 'dev_t' and 'ino_t' types. m4_ifdef([gl_WINDOWS_STAT_INODES], [ AC_REQUIRE([gl_WINDOWS_STAT_INODES]) ], [ WINDOWS_STAT_INODES=0 ]) AC_SUBST([WINDOWS_STAT_INODES]) ]) AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS], [ ]) # This works around a buggy version in autoconf <= 2.69. # See m4_version_prereq([2.70], [], [ # This is taken from the following Autoconf patch: # https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=e17a30e987d7ee695fb4294a82d987ec3dc9b974 m4_undefine([AC_HEADER_MAJOR]) AC_DEFUN([AC_HEADER_MAJOR], [AC_CHECK_HEADERS_ONCE([sys/types.h]) AC_CHECK_HEADER([sys/mkdev.h], [AC_DEFINE([MAJOR_IN_MKDEV], [1], [Define to 1 if `major', `minor', and `makedev' are declared in .])]) if test $ac_cv_header_sys_mkdev_h = no; then AC_CHECK_HEADER([sys/sysmacros.h], [AC_DEFINE([MAJOR_IN_SYSMACROS], [1], [Define to 1 if `major', `minor', and `makedev' are declared in .])]) fi ]) ]) # sys_wait_h.m4 serial 6 dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_SYS_WAIT_H], [ AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS]) dnl is always overridden, because of GNULIB_POSIXCHECK. gl_CHECK_NEXT_HEADERS([sys/wait.h]) dnl Ensure the type pid_t gets defined. AC_REQUIRE([AC_TYPE_PID_T]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [waitpid]) ]) AC_DEFUN([gl_SYS_WAIT_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_SYS_WAIT_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_SYS_WAIT_H_DEFAULTS], [ GNULIB_WAITPID=0; AC_SUBST([GNULIB_WAITPID]) dnl Assume proper GNU behavior unless another module says otherwise. ]) # threadlib.m4 serial 27 dnl Copyright (C) 2005-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_PREREQ([2.60]) dnl The general structure of the multithreading modules in gnulib is that we dnl have three set of modules: dnl dnl * POSIX API: dnl pthread, which combines dnl pthread-h dnl pthread-thread dnl pthread-once dnl pthread-mutex dnl pthread-rwlock dnl pthread-cond dnl pthread-tss dnl pthread-spin dnl sched_yield dnl dnl * ISO C API: dnl threads, which combines dnl threads-h dnl thrd dnl mtx dnl cnd dnl tss dnl dnl * Gnulib API, with an implementation that can be chosen at configure dnl time through the option --enable-threads=... dnl thread dnl lock dnl cond dnl tls dnl yield dnl dnl They are independent, except for the fact that dnl - the implementation of the ISO C API may use the POSIX (or some other dnl platform dependent) API, dnl - the implementation of the Gnulib API may use the POSIX or ISO C or dnl some other platform dependent API, depending on the --enable-threads dnl option. dnl dnl This file contains macros for all of these APIs! dnl ============================================================================ dnl Macros for all thread APIs AC_DEFUN([gl_ANYTHREADLIB_EARLY], [ AC_REQUIRE([AC_CANONICAL_HOST]) if test -z "$gl_anythreadlib_early_done"; then case "$host_os" in osf*) # On OSF/1, the compiler needs the flag -D_REENTRANT so that it # groks . cc also understands the flag -pthread, but # we don't use it because 1. gcc-2.95 doesn't understand -pthread, # 2. putting a flag into CPPFLAGS that has an effect on the linker # causes the AC_LINK_IFELSE test below to succeed unexpectedly, # leading to wrong values of LIBTHREAD and LTLIBTHREAD. CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;; esac # Some systems optimize for single-threaded programs by default, and # need special flags to disable these optimizations. For example, the # definition of 'errno' in . case "$host_os" in aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;; solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;; esac gl_anythreadlib_early_done=done fi ]) dnl Checks whether the compiler and linker support weak declarations of symbols. AC_DEFUN([gl_WEAK_SYMBOLS], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_CACHE_CHECK([whether imported symbols can be declared weak], [gl_cv_have_weak], [gl_cv_have_weak=no dnl First, test whether the compiler accepts it syntactically. AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[extern void xyzzy (); #pragma weak xyzzy]], [[xyzzy();]])], [gl_cv_have_weak=maybe]) if test $gl_cv_have_weak = maybe; then dnl Second, test whether it actually works. On Cygwin 1.7.2, with dnl gcc 4.3, symbols declared weak always evaluate to the address 0. AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #pragma weak fputs int main () { return (fputs == NULL); }]])], [gl_cv_have_weak=yes], [gl_cv_have_weak=no], [dnl When cross-compiling, assume that only ELF platforms support dnl weak symbols. AC_EGREP_CPP([Extensible Linking Format], [#ifdef __ELF__ Extensible Linking Format #endif ], [gl_cv_have_weak="guessing yes"], [gl_cv_have_weak="guessing no"]) ]) fi dnl But when linking statically, weak symbols don't work. case " $LDFLAGS " in *" -static "*) gl_cv_have_weak=no ;; esac dnl Test for a bug in FreeBSD 11: A link error occurs when using a weak dnl symbol and linking against a shared library that has a dependency on dnl the shared library that defines the symbol. case "$gl_cv_have_weak" in *yes) case "$host_os" in freebsd* | dragonfly*) : > conftest1.c $CC $CPPFLAGS $CFLAGS $LDFLAGS -fPIC -shared -o libempty.so conftest1.c -lpthread >&AS_MESSAGE_LOG_FD 2>&1 cat < conftest2.c #include #pragma weak pthread_mutexattr_gettype int main () { return (pthread_mutexattr_gettype != NULL); } EOF $CC $CPPFLAGS $CFLAGS $LDFLAGS -o conftest conftest2.c libempty.so >&AS_MESSAGE_LOG_FD 2>&1 \ || gl_cv_have_weak=no rm -f conftest1.c libempty.so conftest2.c conftest ;; esac ;; esac ]) case "$gl_cv_have_weak" in *yes) AC_DEFINE([HAVE_WEAK_SYMBOLS], [1], [Define to 1 if the compiler and linker support weak declarations of symbols.]) ;; esac ]) dnl ============================================================================ dnl Macros for the POSIX API dnl gl_PTHREADLIB dnl ------------- dnl Tests for the libraries needs for using the POSIX threads API. dnl Sets the variable LIBPTHREAD to the linker options for use in a Makefile. dnl Sets the variable LIBPMULTITHREAD, for programs that really need dnl multithread functionality. The difference between LIBPTHREAD and dnl LIBPMULTITHREAD is that on platforms supporting weak symbols, typically dnl LIBPTHREAD is empty whereas LIBPMULTITHREAD is not. dnl Sets the variable LIB_SCHED_YIELD to the linker options needed to use the dnl sched_yield() function. dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for dnl multithread-safe programs. dnl Defines the C macro HAVE_PTHREAD_API if (at least parts of) the POSIX dnl threads API is available. dnl The guts of gl_PTHREADLIB. Needs to be expanded only once. AC_DEFUN([gl_PTHREADLIB_BODY], [ AC_REQUIRE([gl_ANYTHREADLIB_EARLY]) if test -z "$gl_pthreadlib_body_done"; then gl_pthread_api=no LIBPTHREAD= LIBPMULTITHREAD= # On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that # it groks . It's added above, in gl_ANYTHREADLIB_EARLY. AC_CHECK_HEADER([pthread.h], [gl_have_pthread_h=yes], [gl_have_pthread_h=no]) if test "$gl_have_pthread_h" = yes; then # Other possible tests: # -lpthreads (FSU threads, PCthreads) # -lgthreads # Test whether both pthread_mutex_lock and pthread_mutexattr_init exist # in libc. IRIX 6.5 has the first one in both libc and libpthread, but # the second one only in libpthread, and lock.c needs it. # # If -pthread works, prefer it to -lpthread, since Ubuntu 14.04 # needs -pthread for some reason. See: # https://lists.gnu.org/r/bug-gnulib/2014-09/msg00023.html save_LIBS=$LIBS for gl_pthread in '' '-pthread'; do LIBS="$LIBS $gl_pthread" AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include pthread_mutex_t m; pthread_mutexattr_t ma; ]], [[pthread_mutex_lock (&m); pthread_mutexattr_init (&ma);]])], [gl_pthread_api=yes LIBPTHREAD=$gl_pthread LIBPMULTITHREAD=$gl_pthread]) LIBS=$save_LIBS test $gl_pthread_api = yes && break done # Test for libpthread by looking for pthread_kill. (Not pthread_self, # since it is defined as a macro on OSF/1.) if test $gl_pthread_api = yes && test -z "$LIBPTHREAD"; then # The program links fine without libpthread. But it may actually # need to link with libpthread in order to create multiple threads. AC_CHECK_LIB([pthread], [pthread_kill], [LIBPMULTITHREAD=-lpthread # On Solaris and HP-UX, most pthread functions exist also in libc. # Therefore pthread_in_use() needs to actually try to create a # thread: pthread_create from libc will fail, whereas # pthread_create will actually create a thread. # On Solaris 10 or newer, this test is no longer needed, because # libc contains the fully functional pthread functions. case "$host_os" in solaris | solaris2.[1-9] | solaris2.[1-9].* | hpux*) AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], [1], [Define if the pthread_in_use() detection is hard.]) esac ]) elif test $gl_pthread_api != yes; then # Some library is needed. Try libpthread and libc_r. AC_CHECK_LIB([pthread], [pthread_kill], [gl_pthread_api=yes LIBPTHREAD=-lpthread LIBPMULTITHREAD=-lpthread]) if test $gl_pthread_api != yes; then # For FreeBSD 4. AC_CHECK_LIB([c_r], [pthread_kill], [gl_pthread_api=yes LIBPTHREAD=-lc_r LIBPMULTITHREAD=-lc_r]) fi fi fi AC_MSG_CHECKING([whether POSIX threads API is available]) AC_MSG_RESULT([$gl_pthread_api]) AC_SUBST([LIBPTHREAD]) AC_SUBST([LIBPMULTITHREAD]) if test $gl_pthread_api = yes; then AC_DEFINE([HAVE_PTHREAD_API], [1], [Define if you have the header and the POSIX threads API.]) fi dnl On some systems, sched_yield is in librt, rather than in libpthread. AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[sched_yield ();]])], [LIB_SCHED_YIELD= ], [dnl Solaris 7...10 has sched_yield in librt, not in libpthread or libc. AC_CHECK_LIB([rt], [sched_yield], [LIB_SCHED_YIELD=-lrt], [dnl Solaris 2.5.1, 2.6 has sched_yield in libposix4, not librt. AC_CHECK_LIB([posix4], [sched_yield], [LIB_SCHED_YIELD=-lposix4])]) ]) AC_SUBST([LIB_SCHED_YIELD]) gl_pthreadlib_body_done=done fi ]) AC_DEFUN([gl_PTHREADLIB], [ AC_REQUIRE([gl_ANYTHREADLIB_EARLY]) gl_PTHREADLIB_BODY ]) dnl ============================================================================ dnl Macros for the ISO C API dnl gl_STDTHREADLIB dnl --------------- dnl Tests for the libraries needs for using the ISO C threads API. dnl Sets the variable LIBSTDTHREAD to the linker options for use in a Makefile. dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for dnl multithread-safe programs. dnl Defines the C macro HAVE_THREADS_H if (at least parts of) the ISO C threads dnl API is available. dnl The guts of gl_STDTHREADLIB. Needs to be expanded only once. AC_DEFUN([gl_STDTHREADLIB_BODY], [ AC_REQUIRE([gl_ANYTHREADLIB_EARLY]) AC_REQUIRE([AC_CANONICAL_HOST]) if test -z "$gl_stdthreadlib_body_done"; then AC_CHECK_HEADERS_ONCE([threads.h]) case "$host_os" in mingw*) LIBSTDTHREAD= ;; *) gl_PTHREADLIB_BODY if test $ac_cv_header_threads_h = yes; then dnl glibc >= 2.29 has thrd_create in libpthread. dnl FreeBSD >= 10 has thrd_create in libstdthreads; this library depends dnl on libpthread (for the symbol 'pthread_mutexattr_gettype'). dnl AIX >= 7.1 and Solaris >= 11.4 have thrd_create in libc. AC_CHECK_FUNCS([thrd_create]) if test $ac_cv_func_thrd_create = yes; then LIBSTDTHREAD= else AC_CHECK_LIB([stdthreads], [thrd_create], [ LIBSTDTHREAD='-lstdthreads -lpthread' ], [ dnl Guess that thrd_create is in libpthread. LIBSTDTHREAD="$LIBPMULTITHREAD" ]) fi else dnl Libraries needed by thrd.c, mtx.c, cnd.c, tss.c. LIBSTDTHREAD="$LIBPMULTITHREAD $LIB_SCHED_YIELD" fi ;; esac AC_SUBST([LIBSTDTHREAD]) AC_MSG_CHECKING([whether ISO C threads API is available]) AC_MSG_RESULT([$ac_cv_header_threads_h]) gl_stdthreadlib_body_done=done fi ]) AC_DEFUN([gl_STDTHREADLIB], [ AC_REQUIRE([gl_ANYTHREADLIB_EARLY]) gl_STDTHREADLIB_BODY ]) dnl ============================================================================ dnl Macros for the Gnulib API dnl gl_THREADLIB dnl ------------ dnl Tests for a multithreading library to be used. dnl If the configure.ac contains a definition of the gl_THREADLIB_DEFAULT_NO dnl (it must be placed before the invocation of gl_THREADLIB_EARLY!), then the dnl default is 'no', otherwise it is system dependent. In both cases, the user dnl can change the choice through the options --enable-threads=choice or dnl --disable-threads. dnl Defines at most one of the macros USE_ISOC_THREADS, USE_POSIX_THREADS, dnl USE_ISOC_AND_POSIX_THREADS, USE_WINDOWS_THREADS. dnl The choice --enable-threads=isoc+posix is available only on platforms that dnl have both the ISO C and the POSIX threads APIs. It has the effect of using dnl the ISO C API for most things and the POSIX API only for creating and dnl controlling threads (because there is no equivalent to pthread_atfork in dnl the ISO C API). dnl Sets the variables LIBTHREAD and LTLIBTHREAD to the linker options for use dnl in a Makefile (LIBTHREAD for use without libtool, LTLIBTHREAD for use with dnl libtool). dnl Sets the variables LIBMULTITHREAD and LTLIBMULTITHREAD similarly, for dnl programs that really need multithread functionality. The difference dnl between LIBTHREAD and LIBMULTITHREAD is that on platforms supporting weak dnl symbols, typically LIBTHREAD is empty whereas LIBMULTITHREAD is not. dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for dnl multithread-safe programs. dnl Since support for GNU pth was removed, $LTLIBTHREAD and $LIBTHREAD have the dnl same value, and similarly $LTLIBMULTITHREAD and $LIBMULTITHREAD have the dnl same value. Only system libraries are needed. AC_DEFUN([gl_THREADLIB_EARLY], [ AC_REQUIRE([gl_THREADLIB_EARLY_BODY]) ]) dnl The guts of gl_THREADLIB_EARLY. Needs to be expanded only once. AC_DEFUN([gl_THREADLIB_EARLY_BODY], [ dnl Ordering constraints: This macro modifies CPPFLAGS in a way that dnl influences the result of the autoconf tests that test for *_unlocked dnl declarations, on AIX 5 at least. Therefore it must come early. AC_BEFORE([$0], [gl_FUNC_GLIBC_UNLOCKED_IO])dnl AC_BEFORE([$0], [gl_ARGP])dnl AC_REQUIRE([AC_CANONICAL_HOST]) dnl _GNU_SOURCE is needed for pthread_rwlock_t on glibc systems. AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl Check for multithreading. m4_ifdef([gl_THREADLIB_DEFAULT_NO], [m4_divert_text([DEFAULTS], [gl_use_threads_default=no])], [m4_divert_text([DEFAULTS], [gl_use_threads_default=])]) m4_divert_text([DEFAULTS], [gl_use_winpthreads_default=]) AC_ARG_ENABLE([threads], AC_HELP_STRING([--enable-threads={isoc|posix|isoc+posix|windows}], [specify multithreading API])m4_ifdef([gl_THREADLIB_DEFAULT_NO], [], [ AC_HELP_STRING([--disable-threads], [build without multithread safety])]), [gl_use_threads=$enableval], [if test -n "$gl_use_threads_default"; then gl_use_threads="$gl_use_threads_default" else changequote(,)dnl case "$host_os" in dnl Disable multithreading by default on OSF/1, because it interferes dnl with fork()/exec(): When msgexec is linked with -lpthread, its dnl child process gets an endless segmentation fault inside execvp(). osf*) gl_use_threads=no ;; dnl Disable multithreading by default on Cygwin 1.5.x, because it has dnl bugs that lead to endless loops or crashes. See dnl . cygwin*) case `uname -r` in 1.[0-5].*) gl_use_threads=no ;; *) gl_use_threads=yes ;; esac ;; dnl Obey gl_AVOID_WINPTHREAD on mingw. mingw*) case "$gl_use_winpthreads_default" in yes) gl_use_threads=posix ;; no) gl_use_threads=windows ;; *) gl_use_threads=yes ;; esac ;; *) gl_use_threads=yes ;; esac changequote([,])dnl fi ]) if test "$gl_use_threads" = yes \ || test "$gl_use_threads" = isoc \ || test "$gl_use_threads" = posix \ || test "$gl_use_threads" = isoc+posix; then # For using or : gl_ANYTHREADLIB_EARLY fi ]) dnl The guts of gl_THREADLIB. Needs to be expanded only once. AC_DEFUN([gl_THREADLIB_BODY], [ AC_REQUIRE([gl_THREADLIB_EARLY_BODY]) gl_threads_api=none LIBTHREAD= LTLIBTHREAD= LIBMULTITHREAD= LTLIBMULTITHREAD= if test "$gl_use_threads" != no; then dnl Check whether the compiler and linker support weak declarations. gl_WEAK_SYMBOLS if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then dnl If we use weak symbols to implement pthread_in_use / pth_in_use / dnl thread_in_use, we also need to test whether the ISO C 11 thrd_create dnl facility is in use. AC_CHECK_HEADERS_ONCE([threads.h]) : fi if test "$gl_use_threads" = isoc || test "$gl_use_threads" = isoc+posix; then AC_CHECK_HEADERS_ONCE([threads.h]) gl_have_isoc_threads="$ac_cv_header_threads_h" fi if test "$gl_use_threads" = yes \ || test "$gl_use_threads" = posix \ || test "$gl_use_threads" = isoc+posix; then gl_PTHREADLIB_BODY LIBTHREAD=$LIBPTHREAD LTLIBTHREAD=$LIBPTHREAD LIBMULTITHREAD=$LIBPMULTITHREAD LTLIBMULTITHREAD=$LIBPMULTITHREAD if test $gl_pthread_api = yes; then if test "$gl_use_threads" = isoc+posix && test "$gl_have_isoc_threads" = yes; then gl_threads_api='isoc+posix' AC_DEFINE([USE_ISOC_AND_POSIX_THREADS], [1], [Define if the combination of the ISO C and POSIX multithreading APIs can be used.]) LIBTHREAD= LTLIBTHREAD= else gl_threads_api=posix AC_DEFINE([USE_POSIX_THREADS], [1], [Define if the POSIX multithreading library can be used.]) if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then if case "$gl_cv_have_weak" in *yes) true;; *) false;; esac; then AC_DEFINE([USE_POSIX_THREADS_WEAK], [1], [Define if references to the POSIX multithreading library should be made weak.]) LIBTHREAD= LTLIBTHREAD= fi fi fi fi fi if test $gl_threads_api = none; then if test "$gl_use_threads" = isoc && test "$gl_have_isoc_threads" = yes; then gl_STDTHREADLIB_BODY LIBTHREAD=$LIBSTDTHREAD LTLIBTHREAD=$LIBSTDTHREAD LIBMULTITHREAD=$LIBSTDTHREAD LTLIBMULTITHREAD=$LIBSTDTHREAD gl_threads_api=isoc AC_DEFINE([USE_ISOC_THREADS], [1], [Define if the ISO C multithreading library can be used.]) fi fi if test $gl_threads_api = none; then case "$gl_use_threads" in yes | windows | win32) # The 'win32' is for backward compatibility. if { case "$host_os" in mingw*) true;; *) false;; esac }; then gl_threads_api=windows AC_DEFINE([USE_WINDOWS_THREADS], [1], [Define if the native Windows multithreading API can be used.]) fi ;; esac fi fi AC_MSG_CHECKING([for multithread API to use]) AC_MSG_RESULT([$gl_threads_api]) AC_SUBST([LIBTHREAD]) AC_SUBST([LTLIBTHREAD]) AC_SUBST([LIBMULTITHREAD]) AC_SUBST([LTLIBMULTITHREAD]) ]) AC_DEFUN([gl_THREADLIB], [ AC_REQUIRE([gl_THREADLIB_EARLY]) AC_REQUIRE([gl_THREADLIB_BODY]) ]) dnl gl_DISABLE_THREADS dnl ------------------ dnl Sets the gl_THREADLIB default so that threads are not used by default. dnl The user can still override it at installation time, by using the dnl configure option '--enable-threads'. AC_DEFUN([gl_DISABLE_THREADS], [ m4_divert_text([INIT_PREPARE], [gl_use_threads_default=no]) ]) dnl gl_AVOID_WINPTHREAD dnl ------------------- dnl Sets the gl_THREADLIB default so that on mingw, a dependency to the dnl libwinpthread DLL (mingw-w64 winpthreads library) is avoided. dnl The user can still override it at installation time, by using the dnl configure option '--enable-threads'. AC_DEFUN([gl_AVOID_WINPTHREAD], [ m4_divert_text([INIT_PREPARE], [gl_use_winpthreads_default=no]) ]) dnl ============================================================================ dnl Survey of platforms: dnl dnl Platform Available Compiler Supports test-lock dnl flavours option weak result dnl --------------- --------- --------- -------- --------- dnl Linux 2.4/glibc posix -lpthread Y OK dnl dnl GNU Hurd/glibc posix dnl dnl Ubuntu 14.04 posix -pthread Y OK dnl dnl FreeBSD 5.3 posix -lc_r Y dnl posix -lkse ? Y dnl posix -lpthread ? Y dnl posix -lthr Y dnl dnl FreeBSD 5.2 posix -lc_r Y dnl posix -lkse Y dnl posix -lthr Y dnl dnl FreeBSD 4.0,4.10 posix -lc_r Y OK dnl dnl NetBSD 1.6 -- dnl dnl OpenBSD 3.4 posix -lpthread Y OK dnl dnl Mac OS X 10.[123] posix -lpthread Y OK dnl dnl Solaris 7,8,9 posix -lpthread Y Sol 7,8: 0.0; Sol 9: OK dnl dnl HP-UX 11 posix -lpthread N (cc) OK dnl Y (gcc) dnl dnl IRIX 6.5 posix -lpthread Y 0.5 dnl dnl AIX 4.3,5.1 posix -lpthread N AIX 4: 0.5; AIX 5: OK dnl dnl OSF/1 4.0,5.1 posix -pthread (cc) N OK dnl -lpthread (gcc) Y dnl dnl Cygwin posix -lpthread Y OK dnl dnl Mingw windows N OK dnl dnl BeOS 5 -- dnl dnl The test-lock result shows what happens if in test-lock.c EXPLICIT_YIELD is dnl turned off: dnl OK if all three tests terminate OK, dnl 0.5 if the first test terminates OK but the second one loops endlessly, dnl 0.0 if the first test already loops endlessly. # Configure a more-standard replacement for . # Copyright (C) 2000-2001, 2003-2007, 2009-2020 Free Software Foundation, Inc. # serial 12 # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # Written by Paul Eggert and Jim Meyering. AC_DEFUN([gl_HEADER_TIME_H], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_HEADER_TIME_H_BODY]) ]) AC_DEFUN([gl_HEADER_TIME_H_BODY], [ AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) gl_NEXT_HEADERS([time.h]) AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC]) AC_REQUIRE([AC_C_RESTRICT]) ]) dnl Check whether 'struct timespec' is declared dnl in time.h, sys/time.h, pthread.h, or unistd.h. AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC], [ AC_CHECK_HEADERS_ONCE([sys/time.h]) AC_CACHE_CHECK([for struct timespec in ], [gl_cv_sys_struct_timespec_in_time_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[static struct timespec x; x.tv_sec = x.tv_nsec;]])], [gl_cv_sys_struct_timespec_in_time_h=yes], [gl_cv_sys_struct_timespec_in_time_h=no])]) TIME_H_DEFINES_STRUCT_TIMESPEC=0 SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=0 PTHREAD_H_DEFINES_STRUCT_TIMESPEC=0 UNISTD_H_DEFINES_STRUCT_TIMESPEC=0 if test $gl_cv_sys_struct_timespec_in_time_h = yes; then TIME_H_DEFINES_STRUCT_TIMESPEC=1 else AC_CACHE_CHECK([for struct timespec in ], [gl_cv_sys_struct_timespec_in_sys_time_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[static struct timespec x; x.tv_sec = x.tv_nsec;]])], [gl_cv_sys_struct_timespec_in_sys_time_h=yes], [gl_cv_sys_struct_timespec_in_sys_time_h=no])]) if test $gl_cv_sys_struct_timespec_in_sys_time_h = yes; then SYS_TIME_H_DEFINES_STRUCT_TIMESPEC=1 else AC_CACHE_CHECK([for struct timespec in ], [gl_cv_sys_struct_timespec_in_pthread_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[static struct timespec x; x.tv_sec = x.tv_nsec;]])], [gl_cv_sys_struct_timespec_in_pthread_h=yes], [gl_cv_sys_struct_timespec_in_pthread_h=no])]) if test $gl_cv_sys_struct_timespec_in_pthread_h = yes; then PTHREAD_H_DEFINES_STRUCT_TIMESPEC=1 else AC_CACHE_CHECK([for struct timespec in ], [gl_cv_sys_struct_timespec_in_unistd_h], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include ]], [[static struct timespec x; x.tv_sec = x.tv_nsec;]])], [gl_cv_sys_struct_timespec_in_unistd_h=yes], [gl_cv_sys_struct_timespec_in_unistd_h=no])]) if test $gl_cv_sys_struct_timespec_in_unistd_h = yes; then UNISTD_H_DEFINES_STRUCT_TIMESPEC=1 fi fi fi fi AC_SUBST([TIME_H_DEFINES_STRUCT_TIMESPEC]) AC_SUBST([SYS_TIME_H_DEFINES_STRUCT_TIMESPEC]) AC_SUBST([PTHREAD_H_DEFINES_STRUCT_TIMESPEC]) AC_SUBST([UNISTD_H_DEFINES_STRUCT_TIMESPEC]) ]) AC_DEFUN([gl_TIME_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS], [ GNULIB_CTIME=0; AC_SUBST([GNULIB_CTIME]) GNULIB_MKTIME=0; AC_SUBST([GNULIB_MKTIME]) GNULIB_LOCALTIME=0; AC_SUBST([GNULIB_LOCALTIME]) GNULIB_NANOSLEEP=0; AC_SUBST([GNULIB_NANOSLEEP]) GNULIB_STRFTIME=0; AC_SUBST([GNULIB_STRFTIME]) GNULIB_STRPTIME=0; AC_SUBST([GNULIB_STRPTIME]) GNULIB_TIMEGM=0; AC_SUBST([GNULIB_TIMEGM]) GNULIB_TIME_R=0; AC_SUBST([GNULIB_TIME_R]) GNULIB_TIME_RZ=0; AC_SUBST([GNULIB_TIME_RZ]) GNULIB_TZSET=0; AC_SUBST([GNULIB_TZSET]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_DECL_LOCALTIME_R=1; AC_SUBST([HAVE_DECL_LOCALTIME_R]) HAVE_NANOSLEEP=1; AC_SUBST([HAVE_NANOSLEEP]) HAVE_STRPTIME=1; AC_SUBST([HAVE_STRPTIME]) HAVE_TIMEGM=1; AC_SUBST([HAVE_TIMEGM]) HAVE_TZSET=1; AC_SUBST([HAVE_TZSET]) dnl Even GNU libc does not have timezone_t yet. HAVE_TIMEZONE_T=0; AC_SUBST([HAVE_TIMEZONE_T]) dnl If another module says to replace or to not replace, do that. dnl Otherwise, replace only if someone compiles with -DGNULIB_PORTCHECK; dnl this lets maintainers check for portability. REPLACE_CTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_CTIME]) REPLACE_LOCALTIME_R=GNULIB_PORTCHECK; AC_SUBST([REPLACE_LOCALTIME_R]) REPLACE_MKTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_MKTIME]) REPLACE_NANOSLEEP=GNULIB_PORTCHECK; AC_SUBST([REPLACE_NANOSLEEP]) REPLACE_STRFTIME=GNULIB_PORTCHECK; AC_SUBST([REPLACE_STRFTIME]) REPLACE_TIMEGM=GNULIB_PORTCHECK; AC_SUBST([REPLACE_TIMEGM]) REPLACE_TZSET=GNULIB_PORTCHECK; AC_SUBST([REPLACE_TZSET]) dnl Hack so that the time module doesn't depend on the sys_time module. dnl First, default GNULIB_GETTIMEOFDAY to 0 if sys_time is absent. : ${GNULIB_GETTIMEOFDAY=0}; AC_SUBST([GNULIB_GETTIMEOFDAY]) dnl Second, it's OK to not use GNULIB_PORTCHECK for REPLACE_GMTIME dnl and REPLACE_LOCALTIME, as portability to Solaris 2.6 and earlier dnl is no longer a big deal. REPLACE_GMTIME=0; AC_SUBST([REPLACE_GMTIME]) REPLACE_LOCALTIME=0; AC_SUBST([REPLACE_LOCALTIME]) ]) #serial 15 # Copyright (C) 2000-2001, 2003-2007, 2009-2020 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. dnl From Jim Meyering AC_DEFUN([gl_TIMESPEC], [:]) # unistd_h.m4 serial 78 dnl Copyright (C) 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Simon Josefsson, Bruno Haible. AC_DEFUN([gl_UNISTD_H], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) gl_CHECK_NEXT_HEADERS([unistd.h]) if test $ac_cv_header_unistd_h = yes; then HAVE_UNISTD_H=1 else HAVE_UNISTD_H=0 fi AC_SUBST([HAVE_UNISTD_H]) dnl Ensure the type pid_t gets defined. AC_REQUIRE([AC_TYPE_PID_T]) dnl Determine WINDOWS_64_BIT_OFF_T. AC_REQUIRE([gl_TYPE_OFF_T]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[ #if HAVE_UNISTD_H # include #endif /* Some systems declare various items in the wrong headers. */ #if !(defined __GLIBC__ && !defined __UCLIBC__) # include # include # include # if defined _WIN32 && ! defined __CYGWIN__ # include # endif #endif ]], [access chdir chown dup dup2 dup3 environ euidaccess faccessat fchdir fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize getgroups gethostname getlogin getlogin_r getpagesize getpass getusershell setusershell endusershell group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite readlink readlinkat rmdir sethostname sleep symlink symlinkat truncate ttyname_r unlink unlinkat usleep]) AC_REQUIRE([AC_C_RESTRICT]) ]) AC_DEFUN([gl_UNISTD_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_UNISTD_H_DEFAULTS], [ GNULIB_ACCESS=0; AC_SUBST([GNULIB_ACCESS]) GNULIB_CHDIR=0; AC_SUBST([GNULIB_CHDIR]) GNULIB_CHOWN=0; AC_SUBST([GNULIB_CHOWN]) GNULIB_CLOSE=0; AC_SUBST([GNULIB_CLOSE]) GNULIB_COPY_FILE_RANGE=0; AC_SUBST([GNULIB_COPY_FILE_RANGE]) GNULIB_DUP=0; AC_SUBST([GNULIB_DUP]) GNULIB_DUP2=0; AC_SUBST([GNULIB_DUP2]) GNULIB_DUP3=0; AC_SUBST([GNULIB_DUP3]) GNULIB_ENVIRON=0; AC_SUBST([GNULIB_ENVIRON]) GNULIB_EUIDACCESS=0; AC_SUBST([GNULIB_EUIDACCESS]) GNULIB_FACCESSAT=0; AC_SUBST([GNULIB_FACCESSAT]) GNULIB_FCHDIR=0; AC_SUBST([GNULIB_FCHDIR]) GNULIB_FCHOWNAT=0; AC_SUBST([GNULIB_FCHOWNAT]) GNULIB_FDATASYNC=0; AC_SUBST([GNULIB_FDATASYNC]) GNULIB_FSYNC=0; AC_SUBST([GNULIB_FSYNC]) GNULIB_FTRUNCATE=0; AC_SUBST([GNULIB_FTRUNCATE]) GNULIB_GETCWD=0; AC_SUBST([GNULIB_GETCWD]) GNULIB_GETDOMAINNAME=0; AC_SUBST([GNULIB_GETDOMAINNAME]) GNULIB_GETDTABLESIZE=0; AC_SUBST([GNULIB_GETDTABLESIZE]) GNULIB_GETGROUPS=0; AC_SUBST([GNULIB_GETGROUPS]) GNULIB_GETHOSTNAME=0; AC_SUBST([GNULIB_GETHOSTNAME]) GNULIB_GETLOGIN=0; AC_SUBST([GNULIB_GETLOGIN]) GNULIB_GETLOGIN_R=0; AC_SUBST([GNULIB_GETLOGIN_R]) GNULIB_GETOPT_POSIX=0; AC_SUBST([GNULIB_GETOPT_POSIX]) GNULIB_GETPAGESIZE=0; AC_SUBST([GNULIB_GETPAGESIZE]) GNULIB_GETPASS=0; AC_SUBST([GNULIB_GETPASS]) GNULIB_GETUSERSHELL=0; AC_SUBST([GNULIB_GETUSERSHELL]) GNULIB_GROUP_MEMBER=0; AC_SUBST([GNULIB_GROUP_MEMBER]) GNULIB_ISATTY=0; AC_SUBST([GNULIB_ISATTY]) GNULIB_LCHOWN=0; AC_SUBST([GNULIB_LCHOWN]) GNULIB_LINK=0; AC_SUBST([GNULIB_LINK]) GNULIB_LINKAT=0; AC_SUBST([GNULIB_LINKAT]) GNULIB_LSEEK=0; AC_SUBST([GNULIB_LSEEK]) GNULIB_PIPE=0; AC_SUBST([GNULIB_PIPE]) GNULIB_PIPE2=0; AC_SUBST([GNULIB_PIPE2]) GNULIB_PREAD=0; AC_SUBST([GNULIB_PREAD]) GNULIB_PWRITE=0; AC_SUBST([GNULIB_PWRITE]) GNULIB_READ=0; AC_SUBST([GNULIB_READ]) GNULIB_READLINK=0; AC_SUBST([GNULIB_READLINK]) GNULIB_READLINKAT=0; AC_SUBST([GNULIB_READLINKAT]) GNULIB_RMDIR=0; AC_SUBST([GNULIB_RMDIR]) GNULIB_SETHOSTNAME=0; AC_SUBST([GNULIB_SETHOSTNAME]) GNULIB_SLEEP=0; AC_SUBST([GNULIB_SLEEP]) GNULIB_SYMLINK=0; AC_SUBST([GNULIB_SYMLINK]) GNULIB_SYMLINKAT=0; AC_SUBST([GNULIB_SYMLINKAT]) GNULIB_TRUNCATE=0; AC_SUBST([GNULIB_TRUNCATE]) GNULIB_TTYNAME_R=0; AC_SUBST([GNULIB_TTYNAME_R]) GNULIB_UNISTD_H_NONBLOCKING=0; AC_SUBST([GNULIB_UNISTD_H_NONBLOCKING]) GNULIB_UNISTD_H_SIGPIPE=0; AC_SUBST([GNULIB_UNISTD_H_SIGPIPE]) GNULIB_UNLINK=0; AC_SUBST([GNULIB_UNLINK]) GNULIB_UNLINKAT=0; AC_SUBST([GNULIB_UNLINKAT]) GNULIB_USLEEP=0; AC_SUBST([GNULIB_USLEEP]) GNULIB_WRITE=0; AC_SUBST([GNULIB_WRITE]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_CHOWN=1; AC_SUBST([HAVE_CHOWN]) HAVE_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE]) HAVE_DUP2=1; AC_SUBST([HAVE_DUP2]) HAVE_DUP3=1; AC_SUBST([HAVE_DUP3]) HAVE_EUIDACCESS=1; AC_SUBST([HAVE_EUIDACCESS]) HAVE_FACCESSAT=1; AC_SUBST([HAVE_FACCESSAT]) HAVE_FCHDIR=1; AC_SUBST([HAVE_FCHDIR]) HAVE_FCHOWNAT=1; AC_SUBST([HAVE_FCHOWNAT]) HAVE_FDATASYNC=1; AC_SUBST([HAVE_FDATASYNC]) HAVE_FSYNC=1; AC_SUBST([HAVE_FSYNC]) HAVE_FTRUNCATE=1; AC_SUBST([HAVE_FTRUNCATE]) HAVE_GETDTABLESIZE=1; AC_SUBST([HAVE_GETDTABLESIZE]) HAVE_GETGROUPS=1; AC_SUBST([HAVE_GETGROUPS]) HAVE_GETHOSTNAME=1; AC_SUBST([HAVE_GETHOSTNAME]) HAVE_GETLOGIN=1; AC_SUBST([HAVE_GETLOGIN]) HAVE_GETPAGESIZE=1; AC_SUBST([HAVE_GETPAGESIZE]) HAVE_GETPASS=1; AC_SUBST([HAVE_GETPASS]) HAVE_GROUP_MEMBER=1; AC_SUBST([HAVE_GROUP_MEMBER]) HAVE_LCHOWN=1; AC_SUBST([HAVE_LCHOWN]) HAVE_LINK=1; AC_SUBST([HAVE_LINK]) HAVE_LINKAT=1; AC_SUBST([HAVE_LINKAT]) HAVE_PIPE=1; AC_SUBST([HAVE_PIPE]) HAVE_PIPE2=1; AC_SUBST([HAVE_PIPE2]) HAVE_PREAD=1; AC_SUBST([HAVE_PREAD]) HAVE_PWRITE=1; AC_SUBST([HAVE_PWRITE]) HAVE_READLINK=1; AC_SUBST([HAVE_READLINK]) HAVE_READLINKAT=1; AC_SUBST([HAVE_READLINKAT]) HAVE_SETHOSTNAME=1; AC_SUBST([HAVE_SETHOSTNAME]) HAVE_SLEEP=1; AC_SUBST([HAVE_SLEEP]) HAVE_SYMLINK=1; AC_SUBST([HAVE_SYMLINK]) HAVE_SYMLINKAT=1; AC_SUBST([HAVE_SYMLINKAT]) HAVE_UNLINKAT=1; AC_SUBST([HAVE_UNLINKAT]) HAVE_USLEEP=1; AC_SUBST([HAVE_USLEEP]) HAVE_DECL_ENVIRON=1; AC_SUBST([HAVE_DECL_ENVIRON]) HAVE_DECL_FCHDIR=1; AC_SUBST([HAVE_DECL_FCHDIR]) HAVE_DECL_FDATASYNC=1; AC_SUBST([HAVE_DECL_FDATASYNC]) HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME]) HAVE_DECL_GETLOGIN=1; AC_SUBST([HAVE_DECL_GETLOGIN]) HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R]) HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE]) HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL]) HAVE_DECL_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME]) HAVE_DECL_TRUNCATE=1; AC_SUBST([HAVE_DECL_TRUNCATE]) HAVE_DECL_TTYNAME_R=1; AC_SUBST([HAVE_DECL_TTYNAME_R]) HAVE_OS_H=0; AC_SUBST([HAVE_OS_H]) HAVE_SYS_PARAM_H=0; AC_SUBST([HAVE_SYS_PARAM_H]) REPLACE_ACCESS=0; AC_SUBST([REPLACE_ACCESS]) REPLACE_CHOWN=0; AC_SUBST([REPLACE_CHOWN]) REPLACE_CLOSE=0; AC_SUBST([REPLACE_CLOSE]) REPLACE_DUP=0; AC_SUBST([REPLACE_DUP]) REPLACE_DUP2=0; AC_SUBST([REPLACE_DUP2]) REPLACE_FACCESSAT=0; AC_SUBST([REPLACE_FACCESSAT]) REPLACE_FCHOWNAT=0; AC_SUBST([REPLACE_FCHOWNAT]) REPLACE_FTRUNCATE=0; AC_SUBST([REPLACE_FTRUNCATE]) REPLACE_GETCWD=0; AC_SUBST([REPLACE_GETCWD]) REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME]) REPLACE_GETDTABLESIZE=0; AC_SUBST([REPLACE_GETDTABLESIZE]) REPLACE_GETLOGIN_R=0; AC_SUBST([REPLACE_GETLOGIN_R]) REPLACE_GETGROUPS=0; AC_SUBST([REPLACE_GETGROUPS]) REPLACE_GETPAGESIZE=0; AC_SUBST([REPLACE_GETPAGESIZE]) REPLACE_GETPASS=0; AC_SUBST([REPLACE_GETPASS]) REPLACE_ISATTY=0; AC_SUBST([REPLACE_ISATTY]) REPLACE_LCHOWN=0; AC_SUBST([REPLACE_LCHOWN]) REPLACE_LINK=0; AC_SUBST([REPLACE_LINK]) REPLACE_LINKAT=0; AC_SUBST([REPLACE_LINKAT]) REPLACE_LSEEK=0; AC_SUBST([REPLACE_LSEEK]) REPLACE_PREAD=0; AC_SUBST([REPLACE_PREAD]) REPLACE_PWRITE=0; AC_SUBST([REPLACE_PWRITE]) REPLACE_READ=0; AC_SUBST([REPLACE_READ]) REPLACE_READLINK=0; AC_SUBST([REPLACE_READLINK]) REPLACE_READLINKAT=0; AC_SUBST([REPLACE_READLINKAT]) REPLACE_RMDIR=0; AC_SUBST([REPLACE_RMDIR]) REPLACE_SLEEP=0; AC_SUBST([REPLACE_SLEEP]) REPLACE_SYMLINK=0; AC_SUBST([REPLACE_SYMLINK]) REPLACE_SYMLINKAT=0; AC_SUBST([REPLACE_SYMLINKAT]) REPLACE_TRUNCATE=0; AC_SUBST([REPLACE_TRUNCATE]) REPLACE_TTYNAME_R=0; AC_SUBST([REPLACE_TTYNAME_R]) REPLACE_UNLINK=0; AC_SUBST([REPLACE_UNLINK]) REPLACE_UNLINKAT=0; AC_SUBST([REPLACE_UNLINKAT]) REPLACE_USLEEP=0; AC_SUBST([REPLACE_USLEEP]) REPLACE_WRITE=0; AC_SUBST([REPLACE_WRITE]) UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H]) UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS]) ]) # utime.m4 serial 1 dnl Copyright (C) 2017-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_UTIME], [ AC_REQUIRE([gl_UTIME_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_CHECK_FUNCS_ONCE([utime]) if test $ac_cv_func_utime = no; then HAVE_UTIME=0 else case "$host_os" in mingw*) dnl On this platform, the original utime() or _utime() produces dnl timestamps that are affected by the time zone. REPLACE_UTIME=1 ;; esac fi ]) # Prerequisites of lib/utime.c. AC_DEFUN([gl_PREREQ_UTIME], [:]) # utime_h.m4 serial 3 dnl Copyright (C) 2017-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_DEFUN([gl_UTIME_H], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_UTIME_H_DEFAULTS]) m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])]) AC_CHECK_HEADERS_ONCE([utime.h]) gl_CHECK_NEXT_HEADERS([utime.h]) if test $ac_cv_header_utime_h = yes; then HAVE_UTIME_H=1 else HAVE_UTIME_H=0 fi AC_SUBST([HAVE_UTIME_H]) m4_ifdef([gl_POSIXCHECK], [UTIME_H=utime.h], [UTIME_H='' if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then dnl Override always, to support the C++ GNULIB_NAMESPACE. UTIME_H=utime.h else if test $ac_cv_header_utime_h != yes; then dnl Provide a substitute file. UTIME_H=utime.h else case "$host_os" in mingw*) dnl Need special handling of 'struct utimbuf'. UTIME_H=utime.h ;; esac fi fi ]) AC_SUBST([UTIME_H]) AM_CONDITIONAL([GL_GENERATE_UTIME_H], [test -n "$UTIME_H"]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include ]], [utime]) ]) AC_DEFUN([gl_UTIME_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_UTIME_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_UTIME_H_DEFAULTS], [ GNULIB_UTIME=0; AC_SUBST([GNULIB_UTIME]) dnl Assume POSIX behavior unless another module says otherwise. HAVE_UTIME=1; AC_SUBST([HAVE_UTIME]) REPLACE_UTIME=0; AC_SUBST([REPLACE_UTIME]) ]) dnl Copyright (C) 2003-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl serial 10 AC_DEFUN([gl_UTIMENS], [ dnl Prerequisites of lib/utimens.c. AC_REQUIRE([gl_FUNC_UTIMES]) AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_FUNCS_ONCE([futimes futimesat futimens utimensat lutimes]) if test $ac_cv_func_futimens = no && test $ac_cv_func_futimesat = yes; then dnl FreeBSD 8.0-rc2 mishandles futimesat(fd,NULL,time). It is not dnl standardized, but Solaris implemented it first and uses it as dnl its only means to set fd time. AC_CACHE_CHECK([whether futimesat handles NULL file], [gl_cv_func_futimesat_works], [touch conftest.file AC_RUN_IFELSE([AC_LANG_PROGRAM([[ #include #include #include ]], [[ int fd = open ("conftest.file", O_RDWR); if (fd < 0) return 1; if (futimesat (fd, NULL, NULL)) return 2; ]])], [gl_cv_func_futimesat_works=yes], [gl_cv_func_futimesat_works=no], [case "$host_os" in # Guess yes on Linux systems. linux-* | linux) gl_cv_func_futimesat_works="guessing yes" ;; # Guess yes on glibc systems. *-gnu*) gl_cv_func_futimesat_works="guessing yes" ;; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_futimesat_works="$gl_cross_guess_normal" ;; esac ]) rm -f conftest.file]) case "$gl_cv_func_futimesat_works" in *yes) ;; *) AC_DEFINE([FUTIMESAT_NULL_BUG], [1], [Define to 1 if futimesat mishandles a NULL file name.]) ;; esac fi ]) # Detect some bugs in glibc's implementation of utimes. # serial 7 dnl Copyright (C) 2003-2005, 2009-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # See if we need to work around bugs in glibc's implementation of # utimes from 2003-07-12 to 2003-09-17. # First, there was a bug that would make utimes set mtime # and atime to zero (1970-01-01) unconditionally. # Then, there was code to round rather than truncate. # Then, there was an implementation (sparc64, Linux-2.4.28, glibc-2.3.3) # that didn't honor the NULL-means-set-to-current-time semantics. # Finally, there was also a version of utimes that failed on read-only # files, while utime worked fine (linux-2.2.20, glibc-2.2.5). # # From Jim Meyering, with suggestions from Paul Eggert. AC_DEFUN([gl_FUNC_UTIMES], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether the utimes function works], [gl_cv_func_working_utimes], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include #include #include #include #include #include #include static int inorder (time_t a, time_t b, time_t c) { return a <= b && b <= c; } int main () { int result = 0; char const *file = "conftest.utimes"; /* On OS/2, file timestamps must be on or after 1980 in local time, with an even number of seconds. */ static struct timeval timeval[2] = {{315620000 + 10, 10}, {315620000 + 1000000, 999998}}; /* Test whether utimes() essentially works. */ { struct stat sbuf; FILE *f = fopen (file, "w"); if (f == NULL) result |= 1; else if (fclose (f) != 0) result |= 1; else if (utimes (file, timeval) != 0) result |= 2; else if (lstat (file, &sbuf) != 0) result |= 1; else if (!(sbuf.st_atime == timeval[0].tv_sec && sbuf.st_mtime == timeval[1].tv_sec)) result |= 4; if (unlink (file) != 0) result |= 1; } /* Test whether utimes() with a NULL argument sets the file's timestamp to the current time. Use 'fstat' as well as 'time' to determine the "current" time, to accommodate NFS file systems if there is a time skew between the host and the NFS server. */ { int fd = open (file, O_WRONLY|O_CREAT, 0644); if (fd < 0) result |= 1; else { time_t t0, t2; struct stat st0, st1, st2; if (time (&t0) == (time_t) -1) result |= 1; else if (fstat (fd, &st0) != 0) result |= 1; else if (utimes (file, timeval) != 0 && (errno != EACCES /* OS/2 kLIBC utimes fails on opened files. */ || close (fd) != 0 || utimes (file, timeval) != 0 || (fd = open (file, O_WRONLY)) < 0)) result |= 2; else if (utimes (file, NULL) != 0 && (errno != EACCES /* OS/2 kLIBC utimes fails on opened files. */ || close (fd) != 0 || utimes (file, NULL) != 0 || (fd = open (file, O_WRONLY)) < 0)) result |= 8; else if (fstat (fd, &st1) != 0) result |= 1; else if (write (fd, "\n", 1) != 1) result |= 1; else if (fstat (fd, &st2) != 0) result |= 1; else if (time (&t2) == (time_t) -1) result |= 1; else { int m_ok_POSIX = inorder (t0, st1.st_mtime, t2); int m_ok_NFS = inorder (st0.st_mtime, st1.st_mtime, st2.st_mtime); if (! (st1.st_atime == st1.st_mtime)) result |= 16; if (! (m_ok_POSIX || m_ok_NFS)) result |= 32; } if (close (fd) != 0) result |= 1; } if (unlink (file) != 0) result |= 1; } /* Test whether utimes() with a NULL argument works on read-only files. */ { int fd = open (file, O_WRONLY|O_CREAT, 0444); if (fd < 0) result |= 1; else if (close (fd) != 0) result |= 1; else if (utimes (file, NULL) != 0) result |= 64; if (unlink (file) != 0) result |= 1; } return result; } ]])], [gl_cv_func_working_utimes=yes], [gl_cv_func_working_utimes=no], [case "$host_os" in # Guess yes on musl systems. *-musl*) gl_cv_func_working_utimes="guessing yes" ;; # Guess no on native Windows. mingw*) gl_cv_func_working_utimes="guessing no" ;; *) gl_cv_func_working_utimes="$gl_cross_guess_normal" ;; esac ]) ]) case "$gl_cv_func_working_utimes" in *yes) AC_DEFINE([HAVE_WORKING_UTIMES], [1], [Define if utimes works properly.]) ;; esac ]) # vasnprintf.m4 serial 37 dnl Copyright (C) 2002-2004, 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_VASNPRINTF], [ AC_CHECK_FUNCS_ONCE([vasnprintf]) if test $ac_cv_func_vasnprintf = no; then gl_REPLACE_VASNPRINTF fi ]) AC_DEFUN([gl_REPLACE_VASNPRINTF], [ AC_CHECK_FUNCS_ONCE([vasnprintf]) AC_LIBOBJ([vasnprintf]) AC_LIBOBJ([printf-args]) AC_LIBOBJ([printf-parse]) AC_LIBOBJ([asnprintf]) if test $ac_cv_func_vasnprintf = yes; then AC_DEFINE([REPLACE_VASNPRINTF], [1], [Define if vasnprintf exists but is overridden by gnulib.]) fi gl_PREREQ_PRINTF_ARGS gl_PREREQ_PRINTF_PARSE gl_PREREQ_VASNPRINTF gl_PREREQ_ASNPRINTF ]) # Prerequisites of lib/printf-args.h, lib/printf-args.c. AC_DEFUN([gl_PREREQ_PRINTF_ARGS], [ AC_REQUIRE([gt_TYPE_WCHAR_T]) AC_REQUIRE([gt_TYPE_WINT_T]) ]) # Prerequisites of lib/printf-parse.h, lib/printf-parse.c. AC_DEFUN([gl_PREREQ_PRINTF_PARSE], [ AC_REQUIRE([gl_FEATURES_H]) AC_REQUIRE([gt_TYPE_WCHAR_T]) AC_REQUIRE([gt_TYPE_WINT_T]) AC_REQUIRE([AC_TYPE_SIZE_T]) AC_CHECK_TYPE([ptrdiff_t], , [AC_DEFINE([ptrdiff_t], [long], [Define as the type of the result of subtracting two pointers, if the system doesn't define it.]) ]) AC_REQUIRE([gt_AC_TYPE_INTMAX_T]) ]) # Prerequisites of lib/vasnprintf.c. AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF], [ AC_REQUIRE([AC_FUNC_ALLOCA]) AC_REQUIRE([gt_TYPE_WCHAR_T]) AC_REQUIRE([gt_TYPE_WINT_T]) AC_CHECK_FUNCS([snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb]) dnl Use the _snprintf function only if it is declared (because on NetBSD it dnl is defined as a weak alias of snprintf; we prefer to use the latter). AC_CHECK_DECLS([_snprintf], , , [[#include ]]) dnl Knowing DBL_EXPBIT0_WORD and DBL_EXPBIT0_BIT enables an optimization dnl in the code for NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE. AC_REQUIRE([gl_DOUBLE_EXPONENT_LOCATION]) dnl We can avoid a lot of code by assuming that snprintf's return value dnl conforms to ISO C99. So check that. AC_REQUIRE([gl_SNPRINTF_RETVAL_C99]) case "$gl_cv_func_snprintf_retval_c99" in *yes) AC_DEFINE([HAVE_SNPRINTF_RETVAL_C99], [1], [Define if the return value of the snprintf function is the number of of bytes (excluding the terminating NUL) that would have been produced if the buffer had been large enough.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting 'long double' # arguments. AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE], [ AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) case "$gl_cv_func_printf_long_double" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1], [Define if the vasnprintf implementation needs special code for 'long double' arguments.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting infinite 'double' # arguments. AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE], [ AC_REQUIRE([gl_PRINTF_INFINITE]) case "$gl_cv_func_printf_infinite" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_INFINITE_DOUBLE], [1], [Define if the vasnprintf implementation needs special code for infinite 'double' arguments.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting infinite 'long double' # arguments. AC_DEFUN([gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE], [ AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE]) dnl There is no need to set NEED_PRINTF_INFINITE_LONG_DOUBLE if dnl NEED_PRINTF_LONG_DOUBLE is already set. AC_REQUIRE([gl_PREREQ_VASNPRINTF_LONG_DOUBLE]) case "$gl_cv_func_printf_long_double" in *yes) case "$gl_cv_func_printf_infinite_long_double" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_INFINITE_LONG_DOUBLE], [1], [Define if the vasnprintf implementation needs special code for infinite 'long double' arguments.]) ;; esac ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting the 'a' directive. AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_A], [ AC_REQUIRE([gl_PRINTF_DIRECTIVE_A]) case "$gl_cv_func_printf_directive_a" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_DIRECTIVE_A], [1], [Define if the vasnprintf implementation needs special code for the 'a' and 'A' directives.]) AC_CHECK_FUNCS([nl_langinfo]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting the 'F' directive. AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_F], [ AC_REQUIRE([gl_PRINTF_DIRECTIVE_F]) case "$gl_cv_func_printf_directive_f" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_DIRECTIVE_F], [1], [Define if the vasnprintf implementation needs special code for the 'F' directive.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting the 'ls' directive. AC_DEFUN([gl_PREREQ_VASNPRINTF_DIRECTIVE_LS], [ AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS]) case "$gl_cv_func_printf_directive_ls" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_DIRECTIVE_LS], [1], [Define if the vasnprintf implementation needs special code for the 'ls' directive.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting the ' flag. AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_GROUPING], [ AC_REQUIRE([gl_PRINTF_FLAG_GROUPING]) case "$gl_cv_func_printf_flag_grouping" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_FLAG_GROUPING], [1], [Define if the vasnprintf implementation needs special code for the ' flag.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting the '-' flag. AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST], [ AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST]) case "$gl_cv_func_printf_flag_leftadjust" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_FLAG_LEFTADJUST], [1], [Define if the vasnprintf implementation needs special code for the '-' flag.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting the 0 flag. AC_DEFUN([gl_PREREQ_VASNPRINTF_FLAG_ZERO], [ AC_REQUIRE([gl_PRINTF_FLAG_ZERO]) case "$gl_cv_func_printf_flag_zero" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_FLAG_ZERO], [1], [Define if the vasnprintf implementation needs special code for the 0 flag.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for supporting large precisions. AC_DEFUN([gl_PREREQ_VASNPRINTF_PRECISION], [ AC_REQUIRE([gl_PRINTF_PRECISION]) case "$gl_cv_func_printf_precision" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_UNBOUNDED_PRECISION], [1], [Define if the vasnprintf implementation needs special code for supporting large precisions without arbitrary bounds.]) AC_DEFINE([NEED_PRINTF_DOUBLE], [1], [Define if the vasnprintf implementation needs special code for 'double' arguments.]) AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1], [Define if the vasnprintf implementation needs special code for 'long double' arguments.]) ;; esac ]) # Extra prerequisites of lib/vasnprintf.c for surviving out-of-memory # conditions. AC_DEFUN([gl_PREREQ_VASNPRINTF_ENOMEM], [ AC_REQUIRE([gl_PRINTF_ENOMEM]) case "$gl_cv_func_printf_enomem" in *yes) ;; *) AC_DEFINE([NEED_PRINTF_ENOMEM], [1], [Define if the vasnprintf implementation needs special code for surviving out-of-memory conditions.]) AC_DEFINE([NEED_PRINTF_DOUBLE], [1], [Define if the vasnprintf implementation needs special code for 'double' arguments.]) AC_DEFINE([NEED_PRINTF_LONG_DOUBLE], [1], [Define if the vasnprintf implementation needs special code for 'long double' arguments.]) ;; esac ]) # Prerequisites of lib/vasnprintf.c including all extras for POSIX compliance. AC_DEFUN([gl_PREREQ_VASNPRINTF_WITH_EXTRAS], [ AC_REQUIRE([gl_PREREQ_VASNPRINTF]) gl_PREREQ_VASNPRINTF_LONG_DOUBLE gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE gl_PREREQ_VASNPRINTF_DIRECTIVE_A gl_PREREQ_VASNPRINTF_DIRECTIVE_F gl_PREREQ_VASNPRINTF_DIRECTIVE_LS gl_PREREQ_VASNPRINTF_FLAG_GROUPING gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST gl_PREREQ_VASNPRINTF_FLAG_ZERO gl_PREREQ_VASNPRINTF_PRECISION gl_PREREQ_VASNPRINTF_ENOMEM ]) # Prerequisites of lib/asnprintf.c. AC_DEFUN([gl_PREREQ_ASNPRINTF], [ ]) # visibility.m4 serial 6 dnl Copyright (C) 2005, 2008, 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Tests whether the compiler supports the command-line option dnl -fvisibility=hidden and the function and variable attributes dnl __attribute__((__visibility__("hidden"))) and dnl __attribute__((__visibility__("default"))). dnl Does *not* test for __visibility__("protected") - which has tricky dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on dnl Mac OS X. dnl Does *not* test for __visibility__("internal") - which has processor dnl dependent semantics. dnl Does *not* test for #pragma GCC visibility push(hidden) - which is dnl "really only recommended for legacy code". dnl Set the variable CFLAG_VISIBILITY. dnl Defines and sets the variable HAVE_VISIBILITY. AC_DEFUN([gl_VISIBILITY], [ AC_REQUIRE([AC_PROG_CC]) CFLAG_VISIBILITY= HAVE_VISIBILITY=0 if test -n "$GCC"; then dnl First, check whether -Werror can be added to the command line, or dnl whether it leads to an error because of some other option that the dnl user has put into $CC $CFLAGS $CPPFLAGS. AC_CACHE_CHECK([whether the -Werror option is usable], [gl_cv_cc_vis_werror], [gl_save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Werror" AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[]], [[]])], [gl_cv_cc_vis_werror=yes], [gl_cv_cc_vis_werror=no]) CFLAGS="$gl_save_CFLAGS" ]) dnl Now check whether visibility declarations are supported. AC_CACHE_CHECK([for simple visibility declarations], [gl_cv_cc_visibility], [gl_save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -fvisibility=hidden" dnl We use the option -Werror and a function dummyfunc, because on some dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning dnl "visibility attribute not supported in this configuration; ignored" dnl at the first function definition in every compilation unit, and we dnl don't want to use the option in this case. if test $gl_cv_cc_vis_werror = yes; then CFLAGS="$CFLAGS -Werror" fi AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[extern __attribute__((__visibility__("hidden"))) int hiddenvar; extern __attribute__((__visibility__("default"))) int exportedvar; extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void); extern __attribute__((__visibility__("default"))) int exportedfunc (void); void dummyfunc (void) {} ]], [[]])], [gl_cv_cc_visibility=yes], [gl_cv_cc_visibility=no]) CFLAGS="$gl_save_CFLAGS" ]) if test $gl_cv_cc_visibility = yes; then CFLAG_VISIBILITY="-fvisibility=hidden" HAVE_VISIBILITY=1 fi fi AC_SUBST([CFLAG_VISIBILITY]) AC_SUBST([HAVE_VISIBILITY]) AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY], [Define to 1 or 0, depending whether the compiler supports simple visibility declarations.]) ]) # vsnprintf-posix.m4 serial 15 dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_VSNPRINTF_POSIX], [ AC_REQUIRE([gl_PRINTF_SIZES_C99]) AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) AC_REQUIRE([gl_PRINTF_INFINITE]) AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_A]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_F]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_N]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS]) AC_REQUIRE([gl_PRINTF_POSITIONS]) AC_REQUIRE([gl_PRINTF_FLAG_GROUPING]) AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST]) AC_REQUIRE([gl_PRINTF_FLAG_ZERO]) AC_REQUIRE([gl_PRINTF_PRECISION]) AC_REQUIRE([gl_PRINTF_ENOMEM]) gl_cv_func_vsnprintf_posix=no AC_CHECK_FUNCS([vsnprintf]) if test $ac_cv_func_vsnprintf = yes; then dnl These tests use vsnprintf() if snprintf() does not exist. gl_SNPRINTF_TRUNCATION_C99 gl_SNPRINTF_RETVAL_C99 gl_SNPRINTF_DIRECTIVE_N gl_SNPRINTF_SIZE1 gl_VSNPRINTF_ZEROSIZE_C99 case "$gl_cv_func_printf_sizes_c99" in *yes) case "$gl_cv_func_printf_long_double" in *yes) case "$gl_cv_func_printf_infinite" in *yes) case "$gl_cv_func_printf_infinite_long_double" in *yes) case "$gl_cv_func_printf_directive_a" in *yes) case "$gl_cv_func_printf_directive_f" in *yes) case "$gl_cv_func_printf_directive_n" in *yes) case "$gl_cv_func_printf_directive_ls" in *yes) case "$gl_cv_func_printf_positions" in *yes) case "$gl_cv_func_printf_flag_grouping" in *yes) case "$gl_cv_func_printf_flag_leftadjust" in *yes) case "$gl_cv_func_printf_flag_zero" in *yes) case "$gl_cv_func_printf_precision" in *yes) case "$gl_cv_func_printf_enomem" in *yes) case "$gl_cv_func_snprintf_truncation_c99" in *yes) case "$gl_cv_func_snprintf_retval_c99" in *yes) case "$gl_cv_func_snprintf_directive_n" in *yes) case "$gl_cv_func_snprintf_size1" in *yes) case "$gl_cv_func_vsnprintf_zerosize_c99" in *yes) # vsnprintf exists and is # already POSIX compliant. gl_cv_func_vsnprintf_posix=yes ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac fi if test $gl_cv_func_vsnprintf_posix = no; then gl_PREREQ_VASNPRINTF_LONG_DOUBLE gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE gl_PREREQ_VASNPRINTF_DIRECTIVE_A gl_PREREQ_VASNPRINTF_DIRECTIVE_F gl_PREREQ_VASNPRINTF_DIRECTIVE_LS gl_PREREQ_VASNPRINTF_FLAG_GROUPING gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST gl_PREREQ_VASNPRINTF_FLAG_ZERO gl_PREREQ_VASNPRINTF_PRECISION gl_PREREQ_VASNPRINTF_ENOMEM gl_REPLACE_VASNPRINTF gl_REPLACE_VSNPRINTF fi ]) # vsnprintf.m4 serial 7 dnl Copyright (C) 2002-2004, 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Libintl 0.17 will replace vsnprintf only if it does not support %1$s, dnl but defers to any gnulib vsnprintf replacements. Therefore, gnulib dnl must guarantee that the decision for replacing vsnprintf is a superset dnl of the reasons checked by libintl. AC_DEFUN([gl_FUNC_VSNPRINTF], [ AC_REQUIRE([gl_STDIO_H_DEFAULTS]) gl_cv_func_vsnprintf_usable=no AC_CHECK_FUNCS([vsnprintf]) if test $ac_cv_func_vsnprintf = yes; then gl_SNPRINTF_SIZE1 case "$gl_cv_func_snprintf_size1" in *yes) gl_SNPRINTF_RETVAL_C99 case "$gl_cv_func_snprintf_retval_c99" in *yes) gl_PRINTF_POSITIONS case "$gl_cv_func_printf_positions" in *yes) gl_cv_func_vsnprintf_usable=yes ;; esac ;; esac ;; esac fi if test $gl_cv_func_vsnprintf_usable = no; then gl_REPLACE_VSNPRINTF fi AC_CHECK_DECLS_ONCE([vsnprintf]) if test $ac_cv_have_decl_vsnprintf = no; then HAVE_DECL_VSNPRINTF=0 fi ]) AC_DEFUN([gl_REPLACE_VSNPRINTF], [ AC_REQUIRE([gl_STDIO_H_DEFAULTS]) AC_LIBOBJ([vsnprintf]) if test $ac_cv_func_vsnprintf = yes; then REPLACE_VSNPRINTF=1 else AC_CHECK_DECLS_ONCE([vsnprintf]) if test $ac_cv_have_decl_vsnprintf = yes; then dnl If the function is declared but does not appear to exist, it may be dnl defined as an inline function. In order to avoid a conflict, we have dnl to define rpl_vsnprintf, not vsnprintf. REPLACE_VSNPRINTF=1 fi fi gl_PREREQ_VSNPRINTF ]) # Prerequisites of lib/vsnprintf.c. AC_DEFUN([gl_PREREQ_VSNPRINTF], [:]) # warn-on-use.m4 serial 6 dnl Copyright (C) 2010-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES) # --------------------------------------- # If the module 'posixcheck' is in use: # # For each whitespace-separated element in the list of NAMES, define # HAVE_RAW_DECL_name if the function has a declaration among INCLUDES # even after being undefined as a macro. # # See warn-on-use.h for some hints on how to poison function names, as # well as ideas on poisoning global variables and macros. NAMES may # include global variables, but remember that only functions work with # _GL_WARN_ON_USE. Typically, INCLUDES only needs to list a single # header, but if the replacement header pulls in other headers because # some systems declare functions in the wrong header, then INCLUDES # should do likewise. # # It is generally safe to assume declarations for functions declared # in the intersection of C89 and C11 (such as printf) without # needing gl_WARN_ON_USE_PREPARE. AC_DEFUN([gl_WARN_ON_USE_PREPARE], [ m4_ifdef([gl_POSIXCHECK], [m4_foreach_w([gl_decl], [$2], [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])), [Define to 1 if ]m4_defn([gl_decl])[ is declared even after undefining macros.])])dnl dnl FIXME: gl_Symbol must be used unquoted until we can assume dnl autoconf 2.64 or newer. for gl_func in m4_flatten([$2]); do AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl AC_CACHE_CHECK([whether $gl_func is declared without a macro], gl_Symbol, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1], [@%:@undef $gl_func (void) $gl_func;])], [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])]) AS_VAR_IF(gl_Symbol, [yes], [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1]) dnl shortcut - if the raw declaration exists, then set a cache dnl variable to allow skipping any later AC_CHECK_DECL efforts eval ac_cv_have_decl_$gl_func=yes]) AS_VAR_POPDEF([gl_Symbol])dnl done ]) ]) dnl A placeholder for ISO C99 , for platforms that have issues. dnl Copyright (C) 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Eric Blake. # wchar_h.m4 serial 45 AC_DEFUN([gl_WCHAR_H], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([gl_WCHAR_H_INLINE_OK]) dnl Prepare for creating substitute . dnl Check for (missing in Linux uClibc when built without wide dnl character support). dnl is always overridden, because of GNULIB_POSIXCHECK. gl_CHECK_NEXT_HEADERS([wchar.h]) if test $ac_cv_header_wchar_h = yes; then HAVE_WCHAR_H=1 else HAVE_WCHAR_H=0 fi AC_SUBST([HAVE_WCHAR_H]) AC_REQUIRE([gl_FEATURES_H]) AC_REQUIRE([gt_TYPE_WINT_T]) if test $gt_cv_c_wint_t = yes; then HAVE_WINT_T=1 else HAVE_WINT_T=0 fi AC_SUBST([HAVE_WINT_T]) AC_REQUIRE([gl_TYPE_WINT_T_PREREQ]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #if !(defined __GLIBC__ && !defined __UCLIBC__) # include # include # include #endif #include ]], [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp wcsncmp wcscasecmp wcsncasecmp wcscoll wcsxfrm wcsdup wcschr wcsrchr wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth wcsftime ]) AC_REQUIRE([AC_C_RESTRICT]) ]) dnl Check whether is usable at all. AC_DEFUN([gl_WCHAR_H_INLINE_OK], [ dnl Test whether suffers due to the transition from '__inline' to dnl 'gnu_inline'. See dnl and . In summary, dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and dnl the option -std=c99 or -std=gnu99, leads to a broken . AC_CACHE_CHECK([whether uses 'inline' correctly], [gl_cv_header_wchar_h_correct_inline], [gl_cv_header_wchar_h_correct_inline=yes AC_LANG_CONFTEST([ AC_LANG_SOURCE([[#define wcstod renamed_wcstod /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include extern int zero (void); int main () { return zero(); } ]])]) dnl Do not rename the object file from conftest.$ac_objext to dnl conftest1.$ac_objext, as this will cause the link to fail on dnl z/OS when using the XPLINK object format (due to duplicate dnl CSECT names). Instead, temporarily redefine $ac_compile so dnl that the object file has the latter name from the start. save_ac_compile="$ac_compile" ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest1/` if echo '#include "conftest.c"' >conftest1.c && AC_TRY_EVAL([ac_compile]); then AC_LANG_CONFTEST([ AC_LANG_SOURCE([[#define wcstod renamed_wcstod /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include int zero (void) { return 0; } ]])]) dnl See note above about renaming object files. ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest2/` if echo '#include "conftest.c"' >conftest2.c && AC_TRY_EVAL([ac_compile]); then if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then : else gl_cv_header_wchar_h_correct_inline=no fi fi fi ac_compile="$save_ac_compile" rm -f conftest[12].c conftest[12].$ac_objext conftest$ac_exeext ]) if test $gl_cv_header_wchar_h_correct_inline = no; then AC_MSG_ERROR([ cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS). This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in C99 mode. You have four options: - Add the flag -fgnu89-inline to CC and reconfigure, or - Fix your include files, using parts of , or - Use a gcc version older than 4.3, or - Don't use the flags -std=c99 or -std=gnu99. Configuration aborted.]) fi ]) AC_DEFUN([gl_WCHAR_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_WCHAR_H_DEFAULTS], [ GNULIB_BTOWC=0; AC_SUBST([GNULIB_BTOWC]) GNULIB_WCTOB=0; AC_SUBST([GNULIB_WCTOB]) GNULIB_MBSINIT=0; AC_SUBST([GNULIB_MBSINIT]) GNULIB_MBRTOWC=0; AC_SUBST([GNULIB_MBRTOWC]) GNULIB_MBRLEN=0; AC_SUBST([GNULIB_MBRLEN]) GNULIB_MBSRTOWCS=0; AC_SUBST([GNULIB_MBSRTOWCS]) GNULIB_MBSNRTOWCS=0; AC_SUBST([GNULIB_MBSNRTOWCS]) GNULIB_WCRTOMB=0; AC_SUBST([GNULIB_WCRTOMB]) GNULIB_WCSRTOMBS=0; AC_SUBST([GNULIB_WCSRTOMBS]) GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS]) GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH]) GNULIB_WMEMCHR=0; AC_SUBST([GNULIB_WMEMCHR]) GNULIB_WMEMCMP=0; AC_SUBST([GNULIB_WMEMCMP]) GNULIB_WMEMCPY=0; AC_SUBST([GNULIB_WMEMCPY]) GNULIB_WMEMMOVE=0; AC_SUBST([GNULIB_WMEMMOVE]) GNULIB_WMEMSET=0; AC_SUBST([GNULIB_WMEMSET]) GNULIB_WCSLEN=0; AC_SUBST([GNULIB_WCSLEN]) GNULIB_WCSNLEN=0; AC_SUBST([GNULIB_WCSNLEN]) GNULIB_WCSCPY=0; AC_SUBST([GNULIB_WCSCPY]) GNULIB_WCPCPY=0; AC_SUBST([GNULIB_WCPCPY]) GNULIB_WCSNCPY=0; AC_SUBST([GNULIB_WCSNCPY]) GNULIB_WCPNCPY=0; AC_SUBST([GNULIB_WCPNCPY]) GNULIB_WCSCAT=0; AC_SUBST([GNULIB_WCSCAT]) GNULIB_WCSNCAT=0; AC_SUBST([GNULIB_WCSNCAT]) GNULIB_WCSCMP=0; AC_SUBST([GNULIB_WCSCMP]) GNULIB_WCSNCMP=0; AC_SUBST([GNULIB_WCSNCMP]) GNULIB_WCSCASECMP=0; AC_SUBST([GNULIB_WCSCASECMP]) GNULIB_WCSNCASECMP=0; AC_SUBST([GNULIB_WCSNCASECMP]) GNULIB_WCSCOLL=0; AC_SUBST([GNULIB_WCSCOLL]) GNULIB_WCSXFRM=0; AC_SUBST([GNULIB_WCSXFRM]) GNULIB_WCSDUP=0; AC_SUBST([GNULIB_WCSDUP]) GNULIB_WCSCHR=0; AC_SUBST([GNULIB_WCSCHR]) GNULIB_WCSRCHR=0; AC_SUBST([GNULIB_WCSRCHR]) GNULIB_WCSCSPN=0; AC_SUBST([GNULIB_WCSCSPN]) GNULIB_WCSSPN=0; AC_SUBST([GNULIB_WCSSPN]) GNULIB_WCSPBRK=0; AC_SUBST([GNULIB_WCSPBRK]) GNULIB_WCSSTR=0; AC_SUBST([GNULIB_WCSSTR]) GNULIB_WCSTOK=0; AC_SUBST([GNULIB_WCSTOK]) GNULIB_WCSWIDTH=0; AC_SUBST([GNULIB_WCSWIDTH]) GNULIB_WCSFTIME=0; AC_SUBST([GNULIB_WCSFTIME]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC]) HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT]) HAVE_MBRTOWC=1; AC_SUBST([HAVE_MBRTOWC]) HAVE_MBRLEN=1; AC_SUBST([HAVE_MBRLEN]) HAVE_MBSRTOWCS=1; AC_SUBST([HAVE_MBSRTOWCS]) HAVE_MBSNRTOWCS=1; AC_SUBST([HAVE_MBSNRTOWCS]) HAVE_WCRTOMB=1; AC_SUBST([HAVE_WCRTOMB]) HAVE_WCSRTOMBS=1; AC_SUBST([HAVE_WCSRTOMBS]) HAVE_WCSNRTOMBS=1; AC_SUBST([HAVE_WCSNRTOMBS]) HAVE_WMEMCHR=1; AC_SUBST([HAVE_WMEMCHR]) HAVE_WMEMCMP=1; AC_SUBST([HAVE_WMEMCMP]) HAVE_WMEMCPY=1; AC_SUBST([HAVE_WMEMCPY]) HAVE_WMEMMOVE=1; AC_SUBST([HAVE_WMEMMOVE]) HAVE_WMEMSET=1; AC_SUBST([HAVE_WMEMSET]) HAVE_WCSLEN=1; AC_SUBST([HAVE_WCSLEN]) HAVE_WCSNLEN=1; AC_SUBST([HAVE_WCSNLEN]) HAVE_WCSCPY=1; AC_SUBST([HAVE_WCSCPY]) HAVE_WCPCPY=1; AC_SUBST([HAVE_WCPCPY]) HAVE_WCSNCPY=1; AC_SUBST([HAVE_WCSNCPY]) HAVE_WCPNCPY=1; AC_SUBST([HAVE_WCPNCPY]) HAVE_WCSCAT=1; AC_SUBST([HAVE_WCSCAT]) HAVE_WCSNCAT=1; AC_SUBST([HAVE_WCSNCAT]) HAVE_WCSCMP=1; AC_SUBST([HAVE_WCSCMP]) HAVE_WCSNCMP=1; AC_SUBST([HAVE_WCSNCMP]) HAVE_WCSCASECMP=1; AC_SUBST([HAVE_WCSCASECMP]) HAVE_WCSNCASECMP=1; AC_SUBST([HAVE_WCSNCASECMP]) HAVE_WCSCOLL=1; AC_SUBST([HAVE_WCSCOLL]) HAVE_WCSXFRM=1; AC_SUBST([HAVE_WCSXFRM]) HAVE_WCSDUP=1; AC_SUBST([HAVE_WCSDUP]) HAVE_WCSCHR=1; AC_SUBST([HAVE_WCSCHR]) HAVE_WCSRCHR=1; AC_SUBST([HAVE_WCSRCHR]) HAVE_WCSCSPN=1; AC_SUBST([HAVE_WCSCSPN]) HAVE_WCSSPN=1; AC_SUBST([HAVE_WCSSPN]) HAVE_WCSPBRK=1; AC_SUBST([HAVE_WCSPBRK]) HAVE_WCSSTR=1; AC_SUBST([HAVE_WCSSTR]) HAVE_WCSTOK=1; AC_SUBST([HAVE_WCSTOK]) HAVE_WCSWIDTH=1; AC_SUBST([HAVE_WCSWIDTH]) HAVE_WCSFTIME=1; AC_SUBST([HAVE_WCSFTIME]) HAVE_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB]) HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH]) REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T]) REPLACE_BTOWC=0; AC_SUBST([REPLACE_BTOWC]) REPLACE_WCTOB=0; AC_SUBST([REPLACE_WCTOB]) REPLACE_MBSINIT=0; AC_SUBST([REPLACE_MBSINIT]) REPLACE_MBRTOWC=0; AC_SUBST([REPLACE_MBRTOWC]) REPLACE_MBRLEN=0; AC_SUBST([REPLACE_MBRLEN]) REPLACE_MBSRTOWCS=0; AC_SUBST([REPLACE_MBSRTOWCS]) REPLACE_MBSNRTOWCS=0; AC_SUBST([REPLACE_MBSNRTOWCS]) REPLACE_WCRTOMB=0; AC_SUBST([REPLACE_WCRTOMB]) REPLACE_WCSRTOMBS=0; AC_SUBST([REPLACE_WCSRTOMBS]) REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS]) REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH]) REPLACE_WCSWIDTH=0; AC_SUBST([REPLACE_WCSWIDTH]) REPLACE_WCSFTIME=0; AC_SUBST([REPLACE_WCSFTIME]) REPLACE_WCSTOK=0; AC_SUBST([REPLACE_WCSTOK]) ]) # wchar_t.m4 serial 4 (gettext-0.18.2) dnl Copyright (C) 2002-2003, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Test whether has the 'wchar_t' type. dnl Prerequisite: AC_PROG_CC AC_DEFUN([gt_TYPE_WCHAR_T], [ AC_CACHE_CHECK([for wchar_t], [gt_cv_c_wchar_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include wchar_t foo = (wchar_t)'\0';]], [[]])], [gt_cv_c_wchar_t=yes], [gt_cv_c_wchar_t=no])]) if test $gt_cv_c_wchar_t = yes; then AC_DEFINE([HAVE_WCHAR_T], [1], [Define if you have the 'wchar_t' type.]) fi ]) # wcrtomb.m4 serial 16 dnl Copyright (C) 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_WCRTOMB], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_TYPE_MBSTATE_T]) gl_MBSTATE_T_BROKEN AC_CHECK_FUNCS_ONCE([wcrtomb]) if test $ac_cv_func_wcrtomb = no; then HAVE_WCRTOMB=0 AC_CHECK_DECLS([wcrtomb],,, [[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]]) if test $ac_cv_have_decl_wcrtomb = yes; then dnl On Minix 3.1.8, the system's declares wcrtomb() although dnl it does not have the function. Avoid a collision with gnulib's dnl replacement. REPLACE_WCRTOMB=1 fi else dnl We don't actually need to override wcrtomb when redefining the semantics dnl of the mbstate_t type. Tested on 32-bit AIX. dnl if test $REPLACE_MBSTATE_T = 1; then dnl REPLACE_WCRTOMB=1 dnl fi if test $REPLACE_WCRTOMB = 0; then dnl On Android 4.3, wcrtomb produces wrong characters in the C locale. dnl On AIX 4.3, OSF/1 5.1 and Solaris <= 11.3, wcrtomb (NULL, 0, NULL) dnl sometimes returns 0 instead of 1. AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([gt_LOCALE_FR]) AC_REQUIRE([gt_LOCALE_FR_UTF8]) AC_REQUIRE([gt_LOCALE_JA]) AC_REQUIRE([gt_LOCALE_ZH_CN]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CACHE_CHECK([whether wcrtomb works in the C locale], [gl_cv_func_wcrtomb_works], [AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include int main () { mbstate_t state; char out[64]; int count; memset (&state, 0, sizeof (state)); out[0] = 'x'; count = wcrtomb (out, L'a', &state); return !(count == 1 && out[0] == 'a'); }]])], [gl_cv_func_wcrtomb_works=yes], [gl_cv_func_wcrtomb_works=no], [case "$host_os" in # Guess no on Android. linux*-android*) gl_cv_func_wcrtomb_works="guessing no";; # Guess yes otherwise. *) gl_cv_func_wcrtomb_works="guessing yes";; esac ]) ]) case "$gl_cv_func_wcrtomb_works" in *yes) ;; *) AC_DEFINE([WCRTOMB_C_LOCALE_BUG], [1], [Define if the wcrtomb function does not work in the C locale.]) REPLACE_WCRTOMB=1 ;; esac fi if test $REPLACE_WCRTOMB = 0; then AC_CACHE_CHECK([whether wcrtomb return value is correct], [gl_cv_func_wcrtomb_retval], [ dnl Initial guess, used when cross-compiling or when no suitable locale dnl is present. changequote(,)dnl case "$host_os" in # Guess no on AIX 4, OSF/1, Solaris, native Windows. aix4* | osf* | solaris* | mingw*) gl_cv_func_wcrtomb_retval="guessing no" ;; # Guess yes otherwise. *) gl_cv_func_wcrtomb_retval="guessing yes" ;; esac changequote([,])dnl if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #include int main () { int result = 0; if (setlocale (LC_ALL, "$LOCALE_FR") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 1; } if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 2; { wchar_t wc = (wchar_t) 0xBADFACE; if (mbtowc (&wc, "\303\274", 2) == 2) if (wcrtomb (NULL, wc, NULL) != 1) result |= 2; } } if (setlocale (LC_ALL, "$LOCALE_JA") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 4; } if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL) { if (wcrtomb (NULL, 0, NULL) != 1) result |= 8; } return result; }]])], [gl_cv_func_wcrtomb_retval=yes], [gl_cv_func_wcrtomb_retval=no], [:]) fi ]) case "$gl_cv_func_wcrtomb_retval" in *yes) ;; *) AC_DEFINE([WCRTOMB_RETVAL_BUG], [1], [Define if the wcrtomb function has an incorrect return value.]) REPLACE_WCRTOMB=1 ;; esac fi fi ]) # Prerequisites of lib/wcrtomb.c. AC_DEFUN([gl_PREREQ_WCRTOMB], [ : ]) # wctype_h.m4 serial 24 dnl A placeholder for ISO C99 , for platforms that lack it. dnl Copyright (C) 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Written by Paul Eggert. AC_DEFUN([gl_WCTYPE_H], [ AC_REQUIRE([gl_WCTYPE_H_DEFAULTS]) AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_CHECK_FUNCS_ONCE([iswcntrl]) if test $ac_cv_func_iswcntrl = yes; then HAVE_ISWCNTRL=1 else HAVE_ISWCNTRL=0 fi AC_SUBST([HAVE_ISWCNTRL]) AC_REQUIRE([gt_TYPE_WINT_T]) if test $gt_cv_c_wint_t = yes; then HAVE_WINT_T=1 else HAVE_WINT_T=0 fi AC_SUBST([HAVE_WINT_T]) AC_REQUIRE([gl_TYPE_WINT_T_PREREQ]) gl_CHECK_NEXT_HEADERS([wctype.h]) if test $ac_cv_header_wctype_h = yes; then if test $ac_cv_func_iswcntrl = yes; then dnl Linux libc5 has an iswprint function that returns 0 for all arguments. dnl The other functions are likely broken in the same way. AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #include int main () { return iswprint ('x') == 0; } ]])], [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no], [dnl Guess no on Linux libc5, yes otherwise. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include #if __GNU_LIBRARY__ == 1 Linux libc5 i18n is broken. #endif]], [])], [gl_cv_func_iswcntrl_works="guessing yes"], [gl_cv_func_iswcntrl_works="guessing no"]) ]) ]) fi HAVE_WCTYPE_H=1 else HAVE_WCTYPE_H=0 fi AC_SUBST([HAVE_WCTYPE_H]) if test $GNULIB_OVERRIDES_WINT_T = 1; then REPLACE_ISWCNTRL=1 else case "$gl_cv_func_iswcntrl_works" in *yes) REPLACE_ISWCNTRL=0 ;; *) REPLACE_ISWCNTRL=1 ;; esac fi AC_SUBST([REPLACE_ISWCNTRL]) if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then dnl Redefine all of iswcntrl, ..., iswxdigit in . : fi if test $REPLACE_ISWCNTRL = 1; then REPLACE_TOWLOWER=1 else AC_CHECK_FUNCS([towlower]) if test $ac_cv_func_towlower = yes; then REPLACE_TOWLOWER=0 else AC_CHECK_DECLS([towlower],,, [[/* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #if HAVE_WCTYPE_H # include #endif ]]) if test $ac_cv_have_decl_towlower = yes; then dnl On Minix 3.1.8, the system's declares towlower() and dnl towupper() although it does not have the functions. Avoid a dnl collision with gnulib's replacement. REPLACE_TOWLOWER=1 else REPLACE_TOWLOWER=0 fi fi fi AC_SUBST([REPLACE_TOWLOWER]) if test $HAVE_ISWCNTRL = 0 || test $REPLACE_TOWLOWER = 1; then dnl Redefine towlower, towupper in . : fi dnl We assume that the wctype() and iswctype() functions exist if and only dnl if the type wctype_t is defined in or in if that dnl exists. dnl HP-UX 11.00 declares all these in and lacks . AC_CACHE_CHECK([for wctype_t], [gl_cv_type_wctype_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[/* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #if HAVE_WCTYPE_H # include #endif wctype_t a; ]], [[]])], [gl_cv_type_wctype_t=yes], [gl_cv_type_wctype_t=no]) ]) if test $gl_cv_type_wctype_t = no; then HAVE_WCTYPE_T=0 fi dnl We assume that the wctrans() and towctrans() functions exist if and only dnl if the type wctrans_t is defined in . AC_CACHE_CHECK([for wctrans_t], [gl_cv_type_wctrans_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[/* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #include wctrans_t a; ]], [[]])], [gl_cv_type_wctrans_t=yes], [gl_cv_type_wctrans_t=no]) ]) if test $gl_cv_type_wctrans_t = no; then HAVE_WCTRANS_T=0 fi dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #if !(defined __GLIBC__ && !defined __UCLIBC__) # include # include # include # include #endif #include ]], [wctype iswctype wctrans towctrans ]) ]) AC_DEFUN([gl_WCTYPE_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_WCTYPE_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_WCTYPE_H_DEFAULTS], [ GNULIB_ISWBLANK=0; AC_SUBST([GNULIB_ISWBLANK]) GNULIB_ISWDIGIT=0; AC_SUBST([GNULIB_ISWDIGIT]) GNULIB_ISWXDIGIT=0; AC_SUBST([GNULIB_ISWXDIGIT]) GNULIB_WCTYPE=0; AC_SUBST([GNULIB_WCTYPE]) GNULIB_ISWCTYPE=0; AC_SUBST([GNULIB_ISWCTYPE]) GNULIB_WCTRANS=0; AC_SUBST([GNULIB_WCTRANS]) GNULIB_TOWCTRANS=0; AC_SUBST([GNULIB_TOWCTRANS]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_ISWBLANK=1; AC_SUBST([HAVE_ISWBLANK]) HAVE_WCTYPE_T=1; AC_SUBST([HAVE_WCTYPE_T]) HAVE_WCTRANS_T=1; AC_SUBST([HAVE_WCTRANS_T]) REPLACE_ISWBLANK=0; AC_SUBST([REPLACE_ISWBLANK]) REPLACE_ISWDIGIT=0; AC_SUBST([REPLACE_ISWDIGIT]) REPLACE_ISWXDIGIT=0; AC_SUBST([REPLACE_ISWXDIGIT]) ]) # wcwidth.m4 serial 30 dnl Copyright (C) 2006-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_WCWIDTH], [ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles dnl Persuade glibc to declare wcwidth(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gt_TYPE_WCHAR_T]) AC_REQUIRE([gt_TYPE_WINT_T]) AC_CHECK_HEADERS_ONCE([wchar.h]) AC_CHECK_FUNCS_ONCE([wcwidth]) AC_CHECK_DECLS([wcwidth], [], [], [[ /* AIX 3.2.5 declares wcwidth in . */ #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include ]]) if test $ac_cv_have_decl_wcwidth != yes; then HAVE_DECL_WCWIDTH=0 fi if test $ac_cv_func_wcwidth != yes; then AC_CACHE_CHECK([whether wcwidth is a macro], [gl_cv_func_wcwidth_macro], [AC_EGREP_CPP([wchar_header_defines_wcwidth], [ #include #ifdef wcwidth wchar_header_defines_wcwidth #endif], [gl_cv_func_wcwidth_macro=yes], [gl_cv_func_wcwidth_macro=no]) ]) fi if test $ac_cv_func_wcwidth = yes || test $gl_cv_func_wcwidth_macro = yes; then HAVE_WCWIDTH=1 dnl On Mac OS X 10.3, wcwidth(0x0301) (COMBINING ACUTE ACCENT) returns 1. dnl On OpenBSD 5.0, wcwidth(0x05B0) (HEBREW POINT SHEVA) returns 1. dnl On OSF/1 5.1, wcwidth(0x200B) (ZERO WIDTH SPACE) returns 1. dnl On OpenBSD 5.8, wcwidth(0xFF1A) (FULLWIDTH COLON) returns 0. dnl This leads to bugs in 'ls' (coreutils). dnl On Solaris 11.4, wcwidth(0x2202) (PARTIAL DIFFERENTIAL) returns 2, dnl even in Western locales. AC_CACHE_CHECK([whether wcwidth works reasonably in UTF-8 locales], [gl_cv_func_wcwidth_works], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ #include /* AIX 3.2.5 declares wcwidth in . */ #include /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include #if !HAVE_DECL_WCWIDTH extern # ifdef __cplusplus "C" # endif int wcwidth (int); #endif int main () { int result = 0; if (setlocale (LC_ALL, "en_US.UTF-8") != NULL) { if (wcwidth (0x0301) > 0) result |= 1; if (wcwidth (0x05B0) > 0) result |= 2; if (wcwidth (0x200B) > 0) result |= 4; if (wcwidth (0xFF1A) == 0) result |= 8; if (wcwidth (0x2202) > 1) result |= 16; } return result; }]])], [gl_cv_func_wcwidth_works=yes], [gl_cv_func_wcwidth_works=no], [ changequote(,)dnl case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_wcwidth_works="guessing yes";; # Guess yes on musl systems. *-musl*) gl_cv_func_wcwidth_works="guessing yes";; # Guess yes on AIX 7 systems. aix[7-9]*) gl_cv_func_wcwidth_works="guessing yes";; *) gl_cv_func_wcwidth_works="$gl_cross_guess_normal";; esac changequote([,])dnl ]) ]) case "$gl_cv_func_wcwidth_works" in *yes) ;; *no) REPLACE_WCWIDTH=1 ;; esac else HAVE_WCWIDTH=0 fi dnl We don't substitute HAVE_WCWIDTH. We assume that if the system does not dnl have the wcwidth function, then it does not declare it. ]) # Prerequisites of lib/wcwidth.c. AC_DEFUN([gl_PREREQ_WCWIDTH], [ AC_REQUIRE([AC_C_INLINE]) : ]) # wint_t.m4 serial 7 dnl Copyright (C) 2003, 2007-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. dnl Test whether has the 'wint_t' type and whether gnulib's dnl or would, if present, override 'wint_t'. dnl Prerequisite: AC_PROG_CC AC_DEFUN([gt_TYPE_WINT_T], [ AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #include #include #include #include wint_t foo = (wchar_t)'\0';]], [[]])], [gt_cv_c_wint_t=yes], [gt_cv_c_wint_t=no])]) if test $gt_cv_c_wint_t = yes; then AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.]) dnl Determine whether gnulib's or would, if present, dnl override 'wint_t'. AC_CACHE_CHECK([whether wint_t is too small], [gl_cv_type_wint_t_too_small], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ /* Tru64 with Desktop Toolkit C has a bug: must be included before . BSD/OS 4.0.1 has a bug: , and must be included before . */ #if !(defined __GLIBC__ && !defined __UCLIBC__) # include # include # include #endif #include int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1]; ]])], [gl_cv_type_wint_t_too_small=no], [gl_cv_type_wint_t_too_small=yes])]) if test $gl_cv_type_wint_t_too_small = yes; then GNULIB_OVERRIDES_WINT_T=1 else GNULIB_OVERRIDES_WINT_T=0 fi else GNULIB_OVERRIDES_WINT_T=0 fi AC_SUBST([GNULIB_OVERRIDES_WINT_T]) ]) dnl Prerequisites of the 'wint_t' override. AC_DEFUN([gl_TYPE_WINT_T_PREREQ], [ AC_CHECK_HEADERS_ONCE([crtdefs.h]) if test $ac_cv_header_crtdefs_h = yes; then HAVE_CRTDEFS_H=1 else HAVE_CRTDEFS_H=0 fi AC_SUBST([HAVE_CRTDEFS_H]) ]) # xsize.m4 serial 5 dnl Copyright (C) 2003-2004, 2008-2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_XSIZE], [ dnl Prerequisites of lib/xsize.h. AC_REQUIRE([gl_SIZE_MAX]) AC_CHECK_HEADERS([stdint.h]) ]) # zzgnulib.m4 serial 1 dnl Copyright (C) 2020 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl This file must be named something that sorts after all other dnl package- or gnulib-provided .m4 files - at least for those packages dnl that redefine AC_PROG_CC. dnl Redefine AC_PROG_CC so that it ends with invocations of gl_COMPILER_CLANG dnl and gl_COMPILER_PREPARE_CHECK_DECL. m4_define([AC_PROG_CC], m4_defn([AC_PROG_CC])[ gl_COMPILER_CLANG gl_COMPILER_PREPARE_CHECK_DECL ]) # gl_ZZGNULIB # ----------- # Witness macro that this file has been included. Needed to force # Automake to include this file after all other gnulib .m4 files. AC_DEFUN([gl_ZZGNULIB])