symlinkat
=========

POSIX specification:
 http://www.opengroup.org/onlinepubs/9699919799/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, IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x, mingw, MSVC 9, Interix 3.5, BeOS. 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.

Portability problems not fixed by Gnulib:

  * This function always fails with ENOSYS on platforms that don't support symlinks: mingw, MSVC 9.