Error when building with clang

[krojew]

When building with clang with all warnings and -Werror:

error: extension used [-Werror,-Wlanguage-extension-token]
#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
^
boost/typeof/typeof.hpp:197:13: note: expanded from macro 'BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP'
<boost/typeof/incr_registration_group.hpp>

[golgobot]

I'm getting the same error when I use bcp to import boost libs. Is there any update on this?