@node symlinkat
@subsection @code{symlinkat}
@findex symlinkat

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/symlinkat.html}

Gnulib module: symlinkat
@mindex symlinkat

Portability problems fixed by Gnulib:
@itemize
@item
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.
@item
Some platforms declare this function in @code{stdio.h} instead of
@code{unistd.h}:
Cygwin 1.7.1.
@item
On some systems, @code{symlinkat(value, fd, "name/")} mistakenly creates a
symlink:
macOS 14, AIX 7.1.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function always fails with @code{ENOSYS} on platforms that don't
support symlinks:
mingw, MSVC 14.
@item
If the target is the empty string, this function can create an empty
symbolic link instead of failing with @code{ENOENT} as GNU/Linux does:
FreeBSD 14.0, NetBSD 10.0, OpenBSD 7.8, Solaris 11.4.
On Solaris, the empty symbolic link @code{""} resolves like @code{"."} does;
on the BSDs, resolution fails with @code{ENOENT}.
@end itemize
