diff -Naur xdrawchem-1.9.9/xdrawchem/molinfodialog.cpp xdrawchem-1.9.9.new/xdrawchem/molinfodialog.cpp
--- xdrawchem-1.9.9/xdrawchem/molinfodialog.cpp	2005-08-07 16:00:19.000000000 -0400
+++ xdrawchem-1.9.9.new/xdrawchem/molinfodialog.cpp	2008-07-07 09:19:58.000000000 -0400
@@ -1,3 +1,4 @@
+#include <cstdlib>
 #include <qapplication.h>
 #include <qclipboard.h>