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10.69.85 symlinkat ¶

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/symlinkat.html

Gnulib module: symlinkat

Portability problems fixed by Gnulib:

• This function is missing on some platforms: glibc 2.3.6, Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 10, Cygwin 1.5.x, mingw, MSVC 14, Android 4.4. But the replacement function is not safe to be used in libraries and is not multithread-safe.
• Some platforms declare this function in stdio.h instead of unistd.h: Cygwin 1.7.1.
• On some systems, symlinkat(value, fd, "name/") mistakenly creates a symlink: macOS 14, AIX 7.1.

Portability problems not fixed by Gnulib:

• This function always fails with ENOSYS on platforms that don’t support symlinks: mingw, MSVC 14.
• If the target is the empty string, this function can create an empty symbolic link instead of failing with ENOENT as GNU/Linux does: FreeBSD 14.0, NetBSD 10.0, OpenBSD 7.8, Solaris 11.4. On Solaris, the empty symbolic link "" resolves like "." does; on the BSDs, resolution fails with ENOENT.