Ubuntu 15.04, Clang 3.6, TBB v 4.4, libstdc++
At least some c++ features are disabled. tbb_config.h incorrectly calculates the __TBB_CPP11_RVALUE_REF_PRESENT. In my case it's diabled. This causes also some other troubles. E.g. tbb::concurrent_bounded_queue::emplace is wrapped with both __TBB_CPP11_VARIADIC_TEMPLATES_PRESENT(value is correct) and the __TBB_CPP11_RVALUE_REF_PRESENT. Since __TBB_CPP11_RVALUE_REF_PRESENT = 0 the emplace is disabled.
Seems to me the problem is in flag calculation. Here is it (tbb_config.h, line 164 )