--- ./lib/acl.h.orig	Sun Aug 22 22:03:58 2004
+++ ./lib/acl.h	Sun Aug 22 22:04:14 2004
@@ -18,6 +18,8 @@
 
    Written by Paul Eggert.  */
 
+#include <stdlib.h>
+
 #if HAVE_SYS_ACL_H
 # include <sys/acl.h>
 #endif