--- gdl-0.9.2.orig/src/cformat.g	2010-07-25 17:59:19.000000000 +0100
+++ gdl-0.9.2/src/cformat.g	2012-06-21 16:34:12.000000000 +0100
@@ -16,6 +16,7 @@
  ***************************************************************************/
 
 header "pre_include_cpp" {
+#include <cstdlib>
 #include "includefirst.hpp"
 }