1 # wcrtomb.m4 serial 4
2 dnl Copyright (C) 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 AC_DEFUN([gl_FUNC_WCRTOMB],
8 [
9 AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
11 AC_REQUIRE([AC_TYPE_MBSTATE_T])
12 gl_MBSTATE_T_BROKEN
13 if test $REPLACE_MBSTATE_T = 1; then
14 REPLACE_WCRTOMB=1
15 fi
16 AC_CHECK_FUNCS_ONCE([wcrtomb])
17 if test $ac_cv_func_wcrtomb = no; then
18 HAVE_WCRTOMB=0
19 fi
20 if test $HAVE_WCRTOMB != 0 && test $REPLACE_WCRTOMB != 1; then
21 dnl On AIX 4.3, OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
22 dnl returns 0 instead of 1.
23 AC_REQUIRE([AC_PROG_CC])
24 AC_REQUIRE([gt_LOCALE_FR])
25 AC_REQUIRE([gt_LOCALE_FR_UTF8])
26 AC_REQUIRE([gt_LOCALE_JA])
27 AC_REQUIRE([gt_LOCALE_ZH_CN])
28 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
29 AC_CACHE_CHECK([whether wcrtomb return value is correct],
30 [gl_cv_func_wcrtomb_retval],
31 [
32 dnl Initial guess, used when cross-compiling or when no suitable locale
33 dnl is present.
34 changequote(,)dnl
35 case "$host_os" in
36 # Guess no on AIX 4, OSF/1 and Solaris.
37 aix4* | osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
38 # Guess yes otherwise.
39 *) gl_cv_func_wcrtomb_retval="guessing yes" ;;
40 esac
41 changequote([,])dnl
42 if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
43 AC_TRY_RUN([
44 #include <locale.h>
45 #include <stdio.h>
46 #include <string.h>
47 #include <wchar.h>
48 int main ()
49 {
50 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
51 {
52 if (wcrtomb (NULL, 0, NULL) != 1)
53 return 1;
54 }
55 if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
56 {
57 if (wcrtomb (NULL, 0, NULL) != 1)
58 return 1;
59 }
60 if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
61 {
62 if (wcrtomb (NULL, 0, NULL) != 1)
63 return 1;
64 }
65 if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
66 {
67 if (wcrtomb (NULL, 0, NULL) != 1)
68 return 1;
69 }
70 return 0;
71 }],
72 [gl_cv_func_wcrtomb_retval=yes],
73 [gl_cv_func_wcrtomb_retval=no],
74 [:])
75 fi
76 ])
77 case "$gl_cv_func_wcrtomb_retval" in
78 *yes) ;;
79 *) REPLACE_WCRTOMB=1 ;;
80 esac
81 fi
82 if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then
83 gl_REPLACE_WCHAR_H
84 AC_LIBOBJ([wcrtomb])
85 gl_PREREQ_WCRTOMB
86 fi
87 ])
89 # Prerequisites of lib/wcrtomb.c.
90 AC_DEFUN([gl_PREREQ_WCRTOMB], [
91 :
92 ])