2 dnl Copyright (C) 2002-2006, 2008-2009 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 # The getopt module assume you want GNU getopt, with getopt_long etc,
8 # rather than vanilla POSIX getopt. This means your code should
9 # always include <getopt.h> for the getopt prototypes.
11 # This is gnulib's entry-point.
14 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
20 # Request the gnulib implementation of the getopt functions unconditionally.
22 AC_DEFUN([gl_REPLACE_GETOPT],
24 dnl Arrange for getopt.h to be created.
25 gl_GETOPT_SUBSTITUTE_HEADER
26 dnl Arrange for unistd.h to include getopt.h.
27 GNULIB_UNISTD_H_GETOPT=1
28 dnl Arrange to compile the getopt implementation.
34 # emacs' configure.in uses this.
35 AC_DEFUN([gl_GETOPT_IFELSE],
37 AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
38 AS_IF([test -n "$gl_replace_getopt"], [$1], [$2])
41 # Determine whether to replace the entire getopt facility.
42 AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
44 dnl Persuade Solaris <unistd.h> to declare optarg, optind, opterr, optopt.
45 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
48 if test -z "$gl_replace_getopt"; then
49 AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
52 if test -z "$gl_replace_getopt"; then
53 AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
56 dnl BSD getopt_long uses an incompatible method to reset option processing,
57 dnl and (as of 2004-10-15) mishandles optional option-arguments.
58 if test -z "$gl_replace_getopt"; then
59 AC_CHECK_DECL([optreset], [gl_replace_getopt=yes], [],
60 [#include <getopt.h>])
63 dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
64 dnl option string (as of 2005-05-05).
65 if test -z "$gl_replace_getopt"; then
66 AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
68 [AC_LANG_PROGRAM([[#include <getopt.h>]],
71 myargv[0] = "conftest";
74 return getopt (2, myargv, "+a") != '?';
76 [gl_cv_func_gnu_getopt=yes],
77 [gl_cv_func_gnu_getopt=no],
78 [dnl cross compiling - pessimistically guess based on decls
79 dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
80 dnl option string (as of 2005-05-05).
81 AC_CHECK_DECL([getopt_clip],
82 [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
83 [#include <getopt.h>])])])
84 if test "$gl_cv_func_gnu_getopt" = "no"; then
90 # emacs' configure.in uses this.
91 AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
94 AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
95 [Define to rpl_ if the getopt replacement functions and variables
100 # Prerequisites of lib/getopt*.
101 # emacs' configure.in uses this.
102 AC_DEFUN([gl_PREREQ_GETOPT],
104 AC_CHECK_DECLS_ONCE([getenv])