1# getopt.m4 serial 10
2dnl Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7# The getopt module assume you want GNU getopt, with getopt_long etc,
8# rather than vanilla POSIX getopt.  This means your your code should
9# always include <getopt.h> for the getopt prototypes.
10
11AC_DEFUN([gl_GETOPT_SUBSTITUTE],
12[
13  AC_LIBOBJ([getopt])
14  AC_LIBOBJ([getopt1])
15  gl_GETOPT_SUBSTITUTE_HEADER
16  gl_PREREQ_GETOPT
17])
18
19AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
20[
21  GETOPT_H=getopt.h
22  AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
23    [Define to rpl_ if the getopt replacement functions and variables
24     should be used.])
25  AC_SUBST([GETOPT_H])
26])
27
28AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
29[
30  GETOPT_H=
31  AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
32  if test -z "$GETOPT_H"; then
33    AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
34  fi
35
36  dnl BSD getopt_long uses an incompatible method to reset option processing,
37  dnl and (as of 2004-10-15) mishandles optional option-arguments.
38  if test -z "$GETOPT_H"; then
39    AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
40  fi
41
42  dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
43  dnl option string (as of 2005-05-05).
44  if test -z "$GETOPT_H"; then
45    AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
46      [AC_RUN_IFELSE(
47	[AC_LANG_PROGRAM([#include <getopt.h>],
48	   [[
49	     char *myargv[3];
50	     myargv[0] = "conftest";
51	     myargv[1] = "-+";
52	     myargv[2] = 0;
53	     return getopt (2, myargv, "+a") != '?';
54	   ]])],
55	[gl_cv_func_gnu_getopt=yes],
56	[gl_cv_func_gnu_getopt=no],
57	[dnl cross compiling - pessimistically guess based on decls
58	 dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
59	 dnl option string (as of 2005-05-05).
60	 AC_CHECK_DECL([getopt_clip],
61	   [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
62	   [#include <getopt.h>])])])
63    if test "$gl_cv_func_gnu_getopt" = "no"; then
64      GETOPT_H=getopt.h
65    fi
66  fi
67])
68
69AC_DEFUN([gl_GETOPT_IFELSE],
70[
71  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
72  AS_IF([test -n "$GETOPT_H"], [$1], [$2])
73])
74
75AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
76
77# Prerequisites of lib/getopt*.
78AC_DEFUN([gl_PREREQ_GETOPT], [:])
79
80ifelse(dnl	Do not change this comment
81   arch-tag: 6c64a021-551c-4a7f-9c63-cd7e1ce54707
82)dnl
83