diff -up openbabel-2.1.1/include/openbabel/data.h.gcc43 openbabel-2.1.1/include/openbabel/data.h
--- openbabel-2.1.1/include/openbabel/data.h.gcc43	2007-04-14 02:34:14.000000000 +0200
+++ openbabel-2.1.1/include/openbabel/data.h	2008-01-06 19:03:06.000000000 +0100
@@ -23,7 +23,7 @@ GNU General Public License for more deta
 #include <openbabel/babelconfig.h>
 
 #include <stdio.h>
-
+#include <string.h>
 #include <fstream>
 #include <vector>
 #include <string>