[boost] Including a system link library for every test, but only on mingw-w64 builds?

Is BOOST_AUTO_LINK supposed to work on mingw-w64 builds with gcc? I'm guessing not since I believe this is a MSVC concept, so I am looking for a bjam recipe that will allow me to add the link library bcrypt.lib to all of the tests in a project's test directory if the build is on a windows system and not using msvc toolset. Are these any examples out there? Thanks, Jim