--- base/Behavior.cpp.gcc	2011-12-07 11:19:08.245592969 +0800
+++ base/Behavior.cpp	2011-12-07 11:20:05.906213672 +0800
@@ -9,6 +9,7 @@
 #include "Private.h"
 #include "Behavior.h"
 #include "Group.h"
+#include <cstdlib>
 
 Behavior::Behavior() {
 	//EM_COUT("Behavior::Behavior", 1);
--- base/BehaviorVisitor.cpp.gcc	2011-12-07 04:26:10.351351546 +0100
+++ base/BehaviorVisitor.cpp	2011-12-07 04:26:21.832923989 +0100
@@ -9,6 +9,7 @@
 #include "BehaviorVisitor.h"
 #include "Behavior.h"
 #include "Group.h"
+#include <cstdlib>
 
 BehaviorVisitor * BehaviorVisitor::p_BehaviorVisitor = NULL;
 
--- base/SignalSender.cpp.gcc	2011-12-07 04:26:42.275078639 +0100
+++ base/SignalSender.cpp	2011-12-07 04:26:53.216027758 +0100
@@ -11,6 +11,7 @@
 #include "SignalSender.h"
 #include "Group.h"
 #include "Behavior.h"
+#include <cstdlib>
 
 SignalSender * SignalSender::p_SignalSender = NULL;