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13.3.10 argp_usage

Documentation:
https://www.gnu.org/software/libc/manual/html_node/Argp-Helper-Functions.html.

Gnulib module: argp

Portability problems fixed by Gnulib:

• This function is missing on all non-glibc platforms: macOS 14, FreeBSD 14.0, NetBSD 10.0, OpenBSD 6.7, Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 11.4, Cygwin 2.9, mingw, MSVC 14, Android 9.0.

Portability problems not fixed by Gnulib: