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],
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
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],
28 dnl Initial guess, used when cross-compiling or when no suitable locale
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" ;;
38 if test $LOCALE_FR != none || test $LOCALE_FR_UTF8 != none || test $LOCALE_JA != none || test $LOCALE_ZH_CN != none; then
46 if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
48 if (wcrtomb (NULL, 0, NULL) != 1)
51 if (setlocale (LC_ALL, "$LOCALE_FR_UTF8") != NULL)
53 if (wcrtomb (NULL, 0, NULL) != 1)
56 if (setlocale (LC_ALL, "$LOCALE_JA") != NULL)
58 if (wcrtomb (NULL, 0, NULL) != 1)
61 if (setlocale (LC_ALL, "$LOCALE_ZH_CN") != NULL)
63 if (wcrtomb (NULL, 0, NULL) != 1)
68 [gl_cv_func_wcrtomb_retval=yes],
69 [gl_cv_func_wcrtomb_retval=no],
73 case "$gl_cv_func_wcrtomb_retval" in
75 *) REPLACE_WCRTOMB=1 ;;
78 if test $HAVE_WCRTOMB = 0 || test $REPLACE_WCRTOMB = 1; then
85 # Prerequisites of lib/wcrtomb.c.
86 AC_DEFUN([gl_PREREQ_WCRTOMB], [