-# wctob.m4 serial 2
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+# wctob.m4 serial 10
+dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_CHECK_FUNCS_ONCE([wctob])
if test $ac_cv_func_wctob = no; then
+ HAVE_WCTOB=0
HAVE_DECL_WCTOB=0
- gl_REPLACE_WCHAR_H
- AC_LIBOBJ([wctob])
- gl_PREREQ_WCTOB
else
- dnl IRIX 6.5 has the wctob() function but does not declare it.
- AC_CHECK_DECLS([wctob], [], [], [
+ HAVE_WCTOB=1
+
+ dnl Solaris 9 has the wctob() function but it does not work.
+ dnl Cygwin 1.7.2 has the wctob() function but it clobbers caller-owned
+ dnl registers, see <http://cygwin.com/ml/cygwin/2010-05/msg00015.html>.
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([gt_LOCALE_FR])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether wctob works],
+ [gl_cv_func_wctob_works],
+ [
+ dnl Initial guess, used when cross-compiling or when no suitable locale
+ dnl is present.
+changequote(,)dnl
+ case "$host_os" in
+ # Guess no on Solaris <= 9 and Cygwin.
+ solaris2.[1-9] | solaris2.[1-9].* | cygwin*)
+ gl_cv_func_wctob_works="guessing no" ;;
+ # Guess yes otherwise.
+ *) gl_cv_func_wctob_works="guessing yes" ;;
+ esac
+changequote([,])dnl
+ case "$host_os" in
+ cygwin*)
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <locale.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+ included before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+
+register long global __asm__ ("%ebx");
+
+int main ()
+{
+ setlocale (LC_ALL, "en_US.UTF-8");
+
+ global = 0x12345678;
+ if (wctob (0x00FC) != -1)
+ return 1;
+ if (global != 0x12345678)
+ return 2;
+ return 0;
+}]])],
+ [:],
+ [gl_cv_func_wctob_works=no],
+ [:])
+ ;;
+ esac
+ if test "$gl_cv_func_wctob_works" != no && test $LOCALE_FR != none; then
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <locale.h>
+#include <string.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+ included before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+int main ()
+{
+ if (setlocale (LC_ALL, "$LOCALE_FR") != NULL)
+ {
+ wchar_t wc;
+
+ if (mbtowc (&wc, "\374", 1) == 1)
+ if (wctob (wc) != (unsigned char) '\374')
+ return 1;
+ }
+ return 0;
+}]])],
+ [gl_cv_func_wctob_works=yes],
+ [gl_cv_func_wctob_works=no],
+ [:])
+ fi
+ ])
+ case "$gl_cv_func_wctob_works" in
+ *yes) ;;
+ *) REPLACE_WCTOB=1 ;;
+ esac
+ if test $REPLACE_WCTOB = 0; then
+
+ dnl IRIX 6.5 has the wctob() function but does not declare it.
+ AC_CHECK_DECLS([wctob], [], [], [[
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
<wchar.h>.
BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
#include <stdio.h>
#include <time.h>
#include <wchar.h>
-])
- if test $ac_cv_have_decl_wctob != yes; then
- HAVE_DECL_WCTOB=0
- gl_REPLACE_WCHAR_H
+]])
+ if test $ac_cv_have_decl_wctob != yes; then
+ HAVE_DECL_WCTOB=0
+ fi
fi
fi
])