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 AC_DEFUN([gl_GETOPT_SUBSTITUTE],
13 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
14 dnl Arrange for getopt.h to be created.
15 gl_GETOPT_SUBSTITUTE_HEADER
16 dnl Arrange for unistd.h to include getopt.h.
17 GNULIB_UNISTD_H_GETOPT=1
18 dnl Arrange to compile the getopt implementation.
24 # emacs' configure.in uses this.
25 AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
28 AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
29 [Define to rpl_ if the getopt replacement functions and variables
34 AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
37 if test -z "$gl_replace_getopt"; then
38 AC_CHECK_HEADERS([getopt.h], [], [gl_replace_getopt=yes])
41 if test -z "$gl_replace_getopt"; then
42 AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
45 dnl BSD getopt_long uses an incompatible method to reset option processing,
46 dnl and (as of 2004-10-15) mishandles optional option-arguments.
47 if test -z "$gl_replace_getopt"; then
48 AC_CHECK_DECL([optreset], [gl_replace_getopt=yes], [],
49 [#include <getopt.h>])
52 dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
53 dnl option string (as of 2005-05-05).
54 if test -z "$gl_replace_getopt"; then
55 AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
57 [AC_LANG_PROGRAM([[#include <getopt.h>]],
60 myargv[0] = "conftest";
63 return getopt (2, myargv, "+a") != '?';
65 [gl_cv_func_gnu_getopt=yes],
66 [gl_cv_func_gnu_getopt=no],
67 [dnl cross compiling - pessimistically guess based on decls
68 dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
69 dnl option string (as of 2005-05-05).
70 AC_CHECK_DECL([getopt_clip],
71 [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
72 [#include <getopt.h>])])])
73 if test "$gl_cv_func_gnu_getopt" = "no"; then
79 # emacs' configure.in uses this.
80 AC_DEFUN([gl_GETOPT_IFELSE],
82 AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
83 AS_IF([test -n "$gl_replace_getopt"], [$1], [$2])
86 # This is gnulib's entry-point.
87 AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
89 # Prerequisites of lib/getopt*.
90 # emacs' configure.in uses this.
91 AC_DEFUN([gl_PREREQ_GETOPT],
93 AC_CHECK_DECLS_ONCE([getenv])