5 POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getopt.html}
9 Portability problems fixed by Gnulib:
13 Portability problems not fixed by Gnulib:
16 The default behavior of the glibc implementation of @code{getopt} allows
17 mixing option and non-option arguments on the command line in any order.
18 Other implementations, such as the one in Cygwin, enforce strict POSIX
19 compliance: they require that the option arguments precede the non-option
20 arguments. This is something to watch out in your program's testsuite.
23 Gnulib provides a module @code{getopt} that has support for ``long options''.
24 Compared to POSIX, it adds a header file @code{<getopt.h>} and functions
25 @code{getopt_long} and @code{getopt_long_only}.