X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fmbstate_t.m4;h=df2a275c2eab6a08d7d0b65fa7ee4e6ae230c7e9;hb=f664d100c1b6807491654bfdf6d90e2d9fd5b4fd;hp=ae2bcf1e8e24369a3cc8fd9fc2fc1eff86c4bcfb;hpb=ee76465ad82c04707c78ff3ed723358217c9e34f;p=gnulib.git

diff --git a/m4/mbstate_t.m4 b/m4/mbstate_t.m4
index ae2bcf1e8..df2a275c2 100644
--- a/m4/mbstate_t.m4
+++ b/m4/mbstate_t.m4
@@ -1,4 +1,8 @@
-# serial 9
+# mbstate_t.m4 serial 9
+dnl Copyright (C) 2000, 2001, 2002 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.
 
@@ -6,24 +10,21 @@
 # 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_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_TYPE_MBSTATE_T
+# -----------------
+AC_DEFUN([AC_TYPE_MBSTATE_T],
+  [AC_CACHE_CHECK([for mbstate_t], ac_cv_type_mbstate_t,
+     [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])