# getopt.m4 serial 14 (modified version) dnl Copyright (C) 2002-2006, 2008 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # The getopt module assume you want GNU getopt, with getopt_long etc, # rather than vanilla POSIX getopt. This means your code should # always include <getopt.h> for the getopt prototypes. AC_DEFUN([gl_GETOPT_SUBSTITUTE], [ AC_LIBOBJ([getopt]) AC_LIBOBJ([getopt1]) gl_GETOPT_SUBSTITUTE_HEADER ]) AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER], [ GETOPT_H=getopt.h AC_DEFINE([__GETOPT_PREFIX], [[rpl_]], [Define to rpl_ if the getopt replacement functions and variables should be used.]) AC_SUBST([GETOPT_H]) ]) AC_DEFUN([gl_GETOPT_CHECK_HEADERS], [ if test -z "$GETOPT_H"; then AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h]) fi if test -z "$GETOPT_H"; then AC_CHECK_FUNCS([getopt_long], [], [GETOPT_H=getopt.h]) fi dnl BSD getopt_long uses a way to reset option processing, that is different dnl from GNU and Solaris (which copied the GNU behavior). We support both dnl GNU and BSD style resetting of getopt_long(), so there's no need to use dnl GNU getopt_long() on BSD due to different resetting style. dnl dnl With getopt_long(), some BSD versions have a bug in handling optional dnl arguments. This bug appears only if the environment variable dnl POSIXLY_CORRECT has been set, so it shouldn't be too bad in most dnl cases; probably most don't have that variable set. But if we actually dnl hit this bug, it is a real problem due to our heavy use of optional dnl arguments. dnl dnl According to CVS logs, the bug was introduced in OpenBSD in 2003-09-22 dnl and copied to FreeBSD in 2004-02-24. It was fixed in both in 2006-09-22, dnl so the affected versions shouldn't be popular anymore anyway. NetBSD dnl never had this bug. TODO: What about Darwin and others? if test -z "$GETOPT_H"; then AC_CHECK_DECL([optreset], [AC_DEFINE([HAVE_OPTRESET], 1, [Define to 1 if getopt.h declares extern int optreset.])], [], [#include <getopt.h>]) fi dnl Solaris 10 getopt doesn't handle `+' as a leading character in an dnl option string (as of 2005-05-05). We don't use that feature, so this dnl is not a problem for us. Thus, the respective test was removed here. ]) AC_DEFUN([gl_GETOPT_IFELSE], [ AC_REQUIRE([gl_GETOPT_CHECK_HEADERS]) AS_IF([test -n "$GETOPT_H"], [$1], [$2]) ]) AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])