[Boost-users] [Serialization] Changes for implementing archives between 1.39 and 1.40

Hi, I'm implementing my own archive (let's say my_archive) for use in Boost.Serialization. I'm following http://www.boost.org/doc/libs/1_40_0/libs/serialization/example/demo_fast_ar... My archive is implemented in a header file. However, I get undefined symbols unless I add the following to my source template class boost::archive::detail::archive_serializer_map<my_archive>; Am I missing something? Is this the correct way of doing it? I didn't have to add this prior to Boost 1.40 Thanks