--- a/QTfrontend/HWApplication.cpp	Sun Mar 10 08:49:40 2013 +0400
+++ b/QTfrontend/HWApplication.cpp	Sun Mar 10 11:29:00 2013 +0100
@@ -21,8 +21,10 @@
 
 #include "hwform.h"
 #include "MessageDialog.h"
+
+#if !defined(Q_WS_WIN)
 #include "signal.h"
-
+#endif
 
 #if !defined(Q_WS_WIN)
 void terminateFrontend(int signal)

--- a/QTfrontend/main.cpp	Sun Mar 10 08:49:40 2013 +0400
+++ b/QTfrontend/main.cpp	Sun Mar 10 11:29:00 2013 +0100
@@ -42,9 +42,6 @@
 #elif defined __APPLE__
 #include "CocoaInitializer.h"
 #endif
-#ifndef _WIN32
-#include <signal.h>
-#endif
 
 // Program resources
 #ifdef __APPLE__