$NetBSD$

--- compile_world.c.orig	2006-02-19 02:24:33.000000000 +0100
+++ compile_world.c	2006-02-19 02:26:05.000000000 +0100
@@ -41,6 +41,11 @@
 #define MAP_FILE 0x0
 #endif
 
+/* IRIX 5 hack: */
+#ifndef MAP_FAILED
+#define MAP_FAILED	((void *) -1)
+#endif
+
 int
 main()
 {
