-# wcwidth.m4 serial 2
-dnl Copyright (C) 2006 Free Software Foundation, Inc.
+# wcwidth.m4 serial 10
+dnl Copyright (C) 2006, 2007 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_DEFUN([gl_FUNC_WCWIDTH],
[
+ AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+
dnl Persuade glibc <wchar.h> to declare wcwidth().
AC_REQUIRE([AC_GNU_SOURCE])
- AC_REQUIRE([AC_C_INLINE])
AC_REQUIRE([gt_TYPE_WCHAR_T])
+ AC_REQUIRE([gt_TYPE_WINT_T])
- AC_CHECK_HEADERS_ONCE([wchar.h wctype.h])
- AC_CHECK_FUNCS_ONCE([iswprint wcwidth])
+ AC_CHECK_HEADERS_ONCE([wchar.h])
+ AC_CHECK_FUNCS_ONCE([wcwidth])
- AC_CACHE_CHECK([whether wcwidth is declared], [ac_cv_have_decl_wcwidth],
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
+ AC_CHECK_DECLS([wcwidth], [], [], [
/* AIX 3.2.5 declares wcwidth in <string.h>. */
-#if HAVE_STRING_H
-# include <string.h>
-#endif
-#if HAVE_WCHAR_H
-# include <wchar.h>
-#endif
-], [
-#ifndef wcwidth
- char *p = (char *) wcwidth;
-#endif
-])], [ac_cv_have_decl_wcwidth=yes], [ac_cv_have_decl_wcwidth=no])])
- if test $ac_cv_have_decl_wcwidth = yes; then
- ac_val=1
- else
- ac_val=0
+#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>
+])
+ if test $ac_cv_have_decl_wcwidth != yes; then
+ HAVE_DECL_WCWIDTH=0
+ fi
+
+ if test $ac_cv_func_wcwidth = no; then
+ REPLACE_WCWIDTH=1
+ fi
+ if test $REPLACE_WCWIDTH = 1; then
+ AC_LIBOBJ([wcwidth])
+ fi
+
+ if test $REPLACE_WCWIDTH = 1 || test $HAVE_DECL_WCWIDTH = 0; then
+ WCHAR_H=wchar.h
fi
- AC_DEFINE_UNQUOTED([HAVE_DECL_WCWIDTH], [$ac_val],
- [Define to 1 if you have the declaration of wcwidth(), and to 0
- otherwise.])
-])
+])