--- /dev/null
+#ifndef FOO_HXX
+#define FOO_HXX
+
+#include <boost/serialization/version.hpp>
+
+struct Foo
+{
+ int i,j;
+
+ friend class boost::serialization::access;
+ template<class Archive>
+ void serialize(Archive & ar, const unsigned int /* version */)
+ {
+ ar & BOOST_SERIALIZATION_NVP(i);
+ ar & BOOST_SERIALIZATION_NVP(j);
+ }
+};
+
+BOOST_CLASS_VERSION(Foo, 1)
+
+#endif