diff -up openmsx-0.8.2/src/serialize.hh~ openmsx-0.8.2/src/serialize.hh
--- openmsx-0.8.2/src/serialize.hh~	2012-01-25 21:49:36.000000000 +0100
+++ openmsx-0.8.2/src/serialize.hh	2012-07-28 12:15:32.541535197 +0200
@@ -18,8 +18,7 @@
 #include <sstream>
 #include <cassert>
 #include <memory>
-
-typedef void* gzFile;
+#include <zlib.h>
 
 namespace openmsx {