canonicalize_file_name
----------------------

Documentation:

  * Symbolic Links (libc),

  * man canonicalize_file_name.

Gnulib module: canonicalize-lgpl

Portability problems fixed by Gnulib:

  * This function is missing on many non-glibc platforms: macOS 11.1, FreeBSD 13.0, NetBSD 9.0, OpenBSD 6.7, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 10, Cygwin 1.5.x, mingw, MSVC 14, Android 9.0.

  * This function fails to detect trailing slashes on non-directories on some platforms: glibc 2.3.5.

Portability problems not fixed by Gnulib: