9.16 fnmatch.h

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/fnmatch.h.html

Gnulib module: fnmatch-h, fnmatch-gnu

Portability problems fixed by Gnulib module fnmatch-h:

Portability problems fixed by Gnulib module fnmatch-gnu, together with module fnmatch-h:

Portability problems not fixed by Gnulib: