the architecture of boost.lockfree is modular, so once boost.atomic is merged, it is trivial to use it again and allow use of the library with pre-c++11 compilers ... this is far from ideal, but boost.atomic has been blocking the release of boost.lockfree for a long time and it doesn't look like that it will be available before std::atomic<> is widely supported ...
I'd ask to leave it configurable as some people (like me) rely on using the non-released boost.atomics library for older compilers (shipped with our stuff) and we would like to avoid having to mix boost::atomics and std::atomics just to be able to use boost.lockfree as well.
i'll probably introduce a preprocessor symbol like BOOST_LOCKFREE_USE_BOOST_ATOMIC that could be used, if the user provides boost.atomic manually ... tim