Hi, there is a ticket for the Boost.Thread #4921 BOOST_THREAD_USE_DLL and BOOST_THREAD_USE_LIB are crucial and need to be documented (https://svn.boost.org/trac/boost/ticket/4921) related to the documentation of how the library can be used and build. Boost.Config provides some tools that the library authors can adopt, but is there a documented way to do it? If yet could you point it Here it is what could be added to for Boost.Thread Using and building the library Boost.Thread is configured following the conventions used to build libraries with separate source code (http://www.boost.org/doc/libs/1_48_0/libs/config/doc/html/boost_config/boost...). Boost.Thread will import/export the code only if the user has specifically asked for it, by defining either BOOST_ALL_DYN_LINK if they want all boost libraries to be dynamically linked, or BOOST_THREAD_DYN_LINK if they want just this one to be dynamically liked. The source code compiled when building the library defines a macros BOOST_THREAD_SOURCE that is used to import or export it. The user must not define this macro in any case. Best, Vicente