-# serial 9
+# mbstate_t.m4 serial 11
+dnl Copyright (C) 2000-2002, 2008 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.
# From Paul Eggert.
# so you can't declare an object of that type.
# Check for this incompatibility with Standard C.
-# Include stdlib.h first, because otherwise this test would fail on Linux
-# (at least glibc-2.1.3) because the "_XOPEN_SOURCE 500" definition elicits
-# a syntax error in wchar.h due to the use of undefined __int32_t.
-
-AC_DEFUN([AC_MBSTATE_T],
- [
- AC_CHECK_HEADERS(stdlib.h)
+# AC_TYPE_MBSTATE_T
+# -----------------
+AC_DEFUN([AC_TYPE_MBSTATE_T],
+[
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) dnl for HP-UX 11.11
AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t,
- [AC_TRY_COMPILE([
-#if HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#include <wchar.h>],
- [mbstate_t x; return sizeof x;],
- ac_cv_type_mbstate_t=yes,
- ac_cv_type_mbstate_t=no)])
- if test $ac_cv_type_mbstate_t = no; then
- AC_DEFINE(mbstate_t, int,
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [AC_INCLUDES_DEFAULT[
+# include <wchar.h>]],
+ [[mbstate_t x; return sizeof x;]])],
+ [ac_cv_type_mbstate_t=yes],
+ [ac_cv_type_mbstate_t=no])])
+ if test $ac_cv_type_mbstate_t = yes; then
+ AC_DEFINE([HAVE_MBSTATE_T], 1,
+ [Define to 1 if <wchar.h> declares mbstate_t.])
+ else
+ AC_DEFINE([mbstate_t], int,
[Define to a type if <wchar.h> does not define.])
- fi])
+ fi
+])