--- gdl-0.9rc4.orig/src/CFMTLexer.cpp	2010-02-02 18:13:51.000000000 +0000
+++ gdl-0.9rc4/src/CFMTLexer.cpp	2010-02-22 19:38:12.118389285 +0000
@@ -11,6 +11,8 @@
 #include <antlr/CharStreamIOException.hpp>
 #include <antlr/NoViableAltForCharException.hpp>
 
+#include <cstdlib>
+
 CFMTLexer::CFMTLexer(std::istream& in)
 	: antlr::CharScanner(new antlr::CharBuffer(in),true)
 {