22d94336716898f66e8381197b050c29b772bf14
1 # wcrtomb.m4 serial 2
2 dnl Copyright (C) 2008 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 AC_CHECK_FUNCS_ONCE([wcrtomb])
13 if test $ac_cv_func_wcrtomb = no; then
14 HAVE_WCRTOMB=0
15 else
17 dnl On OSF/1 5.1 and Solaris 10, wcrtomb (NULL, 0, NULL) sometimes
18 dnl returns 0 instead of 1.
19 AC_REQUIRE([AC_PROG_CC])
20 AC_REQUIRE([gt_LOCALE_FR])
21 AC_REQUIRE([gt_LOCALE_FR_UTF8])
22 AC_REQUIRE([gt_LOCALE_JA])
23 AC_REQUIRE([gt_LOCALE_ZH_CN])
24 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
25 AC_CACHE_CHECK([whether wcrtomb return value is correct],
26 [gl_cv_func_wcrtomb_retval],
27 [
28 dnl Initial guess, used when cross-compiling or when no suitable locale
29 dnl is present.
30 changequote(,)dnl
31 case "$host_os" in
32 # Guess no on OSF/1 and Solaris.
33 osf* | solaris*) gl_cv_func_wcrtomb_retval="guessing no" ;;
34 # Guess yes otherwise.
35 *) gl_cv_func_wcrtomb_retval="guessing yes" ;;
36 esac
37 changequote([,])dnl
38 if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
39 AC_TRY_RUN([
40 #include <locale.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <wchar.h>
44 int main ()
45 {
46 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
47 {
48 if (wcrtomb (NULL, 0, NULL) != 1)
49 return 1;
50 }
51 if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
52 {
53 if (wcrtomb (NULL, 0, NULL) != 1)
54 return 1;
55 }
56 if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
57 {
58 if (wcrtomb (NULL, 0, NULL) != 1)
59 return 1;
60 }
61 if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
62 {
63 if (wcrtomb (NULL, 0, NULL) != 1)
64 return 1;
65 }
66 return 0;
67 }],
68 [gl_cv_func_wcrtomb_retval=yes],
69 [gl_cv_func_wcrtomb_retval=no],
70 [])
71 fi
72 ])
73 case "$gl_cv_func_wcrtomb_retval" in
74 *yes) ;;
75 *) REPLACE_WCRTOMB=1 ;;
76 esac
77 fi
78 if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then
79 gl_REPLACE_WCHAR_H
80 AC_LIBOBJ([wcrtomb])
81 gl_PREREQ_WCRTOMB
82 fi
83 ])
85 # Prerequisites of lib/wcrtomb.c.
86 AC_DEFUN([gl_PREREQ_WCRTOMB], [
87 :
88 ])