root/trunk/m4/getopt.m4

Revision 4190, 2.5 kB (checked in by miyoshi, 2 years ago)

Sync up with Emacs CVS HEAD.

Line 
1 # getopt.m4 serial 10
2 dnl Copyright (C) 2002,2003,2004,2005,2006,2007 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.
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
11 AC_DEFUN([gl_GETOPT_SUBSTITUTE],
12 [
13   AC_LIBOBJ([getopt])
14   AC_LIBOBJ([getopt1])
15   gl_GETOPT_SUBSTITUTE_HEADER
16   gl_PREREQ_GETOPT
17 ])
18
19 AC_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
28 AC_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
69 AC_DEFUN([gl_GETOPT_IFELSE],
70 [
71   AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
72   AS_IF([test -n "$GETOPT_H"], [$1], [$2])
73 ])
74
75 AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
76
77 # Prerequisites of lib/getopt*.
78 AC_DEFUN([gl_PREREQ_GETOPT], [:])
79
80 ifelse(dnl      Do not change this comment
81    arch-tag: 6c64a021-551c-4a7f-9c63-cd7e1ce54707
82 )dnl
83
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