Hi, at the moment, the above tests fails on pretty much every Windows toolset, because it can't import symbols from Boost.Serialization and Boost.Date_time Here's the relevant code: [ run gregorian/testgreg_serialize.cpp <lib>../build/boost_date_time <lib>@boost/libs/serialization/build/boost_serialization : : : $(DATE_TIME_DYNAMIC_PROPERTIES) : testgreg_serialize_dll ] It seems wrong to be to use DATE_TIME_DYNAMIC_PROPERTIES (which includes <define>BOOST_ALL_DYN_LINK and at the same time link to *static* libraries. I suggest that <lib> in two places above be replaced with <dll>. Since I don't have msvc around, can somebody test that such change indeed fixes the problem? Thanks, Volodya