--- ./lib/ec_hw.c.orig	2009-06-30 11:23:48.000000000 +0200
+++ ./lib/ec_hw.c	2009-06-30 11:24:57.000000000 +0200
@@ -16,6 +16,7 @@
 
 #if HAVE_HWEC
 
+#include <stdlib.h>
 #include <net/if_arp.h>
 #include "net-support.h"