2 @subsection @code{sem_clockwait}
9 @ref{Non-POSIX Extensions,,Non-POSIX Extensions,libc},
12 @url{https://www.gnu.org/software/libc/manual/html_node/Non_002dPOSIX-Extensions.html},
18 Portability problems fixed by Gnulib:
22 Portability problems not fixed by Gnulib:
25 This function is missing on all non-glibc platforms:
26 Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 11.4, Cygwin, mingw, MSVC 14, Android 9.0.