X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fwcrtomb.m4;h=00d7302e8e3b808b1ea88e4820e6f8cf83b8b525;hb=653b905f9a93de7280216e1f58be6068fb21acf4;hp=d21f1b9a75f23729b3cad772fbfe5c2e6c8a9925;hpb=d4224ac60671bcbdd6ab1f8b8bbd12ae10625ab7;p=gnulib.git

diff --git a/m4/wcrtomb.m4 b/m4/wcrtomb.m4
index d21f1b9a7..00d7302e8 100644
--- a/m4/wcrtomb.m4
+++ b/m4/wcrtomb.m4
@@ -1,5 +1,5 @@
-# wcrtomb.m4 serial 10
-dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
+# wcrtomb.m4 serial 11
+dnl Copyright (C) 2008-2012 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.
@@ -14,6 +14,22 @@ AC_DEFUN([gl_FUNC_WCRTOMB],
   AC_CHECK_FUNCS_ONCE([wcrtomb])
   if test $ac_cv_func_wcrtomb = no; then
     HAVE_WCRTOMB=0
+    AC_CHECK_DECLS([wcrtomb],,, [[
+/* 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_wcrtomb = yes; then
+      dnl On Minix 3.1.8, the system's <wchar.h> declares wcrtomb() although
+      dnl it does not have the function. Avoid a collision with gnulib's
+      dnl replacement.
+      REPLACE_WCRTOMB=1
+    fi
   else
     if test $REPLACE_MBSTATE_T = 1; then
       REPLACE_WCRTOMB=1