In file included from test-all.c:18:
test-libpython-version.c:5:3: error: #error 
    5 |  #error
      |   ^~~~~
In file included from test-all.c:22:
test-libperl.c:2:10: fatal error: EXTERN.h: No such file or directory
    2 | #include <EXTERN.h>
      |          ^~~~~~~~~~
compilation terminated.