Ensure all prerequisites of <wchar.h> are included.

[pspp] / m4 / wcrtomb.m4

diff --git a/m4/wcrtomb.m4 b/m4/wcrtomb.m4
index 514aed63b37365a1c38adbd416def8231417b0c1..b8a3cf977febf71eb706d8df3e1d4e1f259c03df 100644 (file)
--- a/m4/wcrtomb.m4
+++ b/m4/wcrtomb.m4
@@ -1,4 +1,4 @@
-# wcrtomb.m4 serial 7
+# wcrtomb.m4 serial 8
 dnl Copyright (C) 2008-2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -43,8 +43,14 @@ changequote([,])dnl
             AC_RUN_IFELSE(
               [AC_LANG_SOURCE([[
 #include <locale.h>
-#include <stdio.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 ()
 {