From 5a8e6f05f64341950627147bd9ecb68e1b90b77c Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Thu, 3 Mar 2005 20:33:06 +0000
Subject: [PATCH] From Derek Price: Define MAP_FAILED when necessary.

---
 m4/mmap-anon.m4 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/m4/mmap-anon.m4 b/m4/mmap-anon.m4
index 3a6e0bf202..2abbe55898 100644
--- a/m4/mmap-anon.m4
+++ b/m4/mmap-anon.m4
@@ -49,6 +49,11 @@ AC_DEFUN([gl_FUNC_MMAP_ANON],
 [/* Define MAP_FILE when it isn't otherwise.  */
 #ifndef MAP_FILE
 # define MAP_FILE 0
+#endif
+
+/* Define MAP_FAILED for old systems which neglect to.  */
+#ifndef MAP_FAILED
+# define MAP_FAILED ((void *)-1)
 #endif])
   fi
 ])
-- 
2.30.2