--- toycars/src/MyFisix/Convex.h.old	2011-04-09 21:17:43.000000000 +0200
+++ toycars/src/MyFisix/Convex.h	2011-04-09 21:18:22.000000000 +0200
@@ -21,6 +21,7 @@
 #include "config.h"
 #endif
 
+#include <cstddef>
 #include <list>
 using namespace std;