[Boost-users] [log] BOOST_LOG_GLOBAL_LOGGER_* in DLL

I'm trying to use BOOST_LOG_GLOBAL_LOGGER_DEFAULT( my_logger, boost::log::sources::severity_logger_mtboost::log::trivial::severity_level ) In a dll but it doesn't appear to be getting initialized. The first BOOST_LOG_SEV results in a crash due to core being null. How do I initialize a global logger in a DLL?