-#serial 6
+# mbswidth.m4 serial 17
+dnl Copyright (C) 2000-2002, 2004, 2006-2010 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.
dnl autoconf tests required for use of mbswidth.c
dnl From Bruno Haible.
-AC_DEFUN([jm_PREREQ_MBSWIDTH],
+AC_DEFUN([gl_MBSWIDTH],
[
- AC_REQUIRE([AC_HEADER_STDC])
- AC_CHECK_HEADERS(limits.h stdlib.h string.h wchar.h wctype.h)
- AC_CHECK_FUNCS(isascii iswcntrl iswprint mbsinit wcwidth)
- jm_FUNC_MBRTOWC
+ AC_CHECK_HEADERS_ONCE([wchar.h])
+ AC_CHECK_FUNCS_ONCE([isascii mbsinit])
- AC_CACHE_CHECK([whether wcwidth is declared], ac_cv_have_decl_wcwidth,
+ dnl UnixWare 7.1.1 <wchar.h> has a declaration of a function mbswidth()
+ dnl that clashes with ours.
+ AC_CACHE_CHECK([whether mbswidth is declared in <wchar.h>],
+ ac_cv_have_decl_mbswidth,
[AC_TRY_COMPILE([
-/* 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
+/* 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>
], [
-#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
+ char *p = (char *) mbswidth;
+ return !p;
+], ac_cv_have_decl_mbswidth=yes, ac_cv_have_decl_mbswidth=no)])
+ if test $ac_cv_have_decl_mbswidth = yes; then
ac_val=1
else
ac_val=0
fi
- AC_DEFINE_UNQUOTED(HAVE_DECL_WCWIDTH, $ac_val,
- [Define to 1 if you have the declaration of wcwidth(), and to 0 otherwise.])
+ AC_DEFINE_UNQUOTED([HAVE_DECL_MBSWIDTH_IN_WCHAR_H], [$ac_val],
+ [Define to 1 if you have a declaration of mbswidth() in <wchar.h>, and to 0 otherwise.])
- AC_MBSTATE_T
+ AC_TYPE_MBSTATE_T
])