@node argp_program_version_hook
@subsection @code{argp_program_version_hook}
@findex argp_program_version_hook

Documentation:@*
@ifinfo
@ref{Argp Global Variables,,Argp Global Variables,libc}.
@end ifinfo
@ifnotinfo
@url{https://www.gnu.org/software/libc/manual/html_node/Argp-Global-Variables.html}.
@end ifnotinfo

Gnulib module: argp
@mindex argp

Portability problems fixed by Gnulib:
@itemize
@item
This variable is missing on all non-glibc platforms:
macOS 14, FreeBSD 14.0, NetBSD 10.0, OpenBSD 7.5, Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 11.4, Cygwin 2.9, mingw, MSVC 14, Android 9.0.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize