--- ./Source/ZenLib/Thread.h.orig	2011-05-01 18:28:13.000000000 +0200
+++ ./Source/ZenLib/Thread.h	2011-05-01 18:28:49.000000000 +0200
@@ -35,6 +35,8 @@
 #endif
 //---------------------------------------------------------------------------
 
+#include <stdlib.h>
+
 namespace ZenLib
 {