Error relocating /usr/lib/libLLVM-3.9.so: _ZSt16__get_once_mutexv: symbol not found
    Error relocating /usr/lib/libLLVM-3.9.so: _ZSt27__set_once_functor_lock_ptrPSt11unique_lockISt5mutexE: symbol not found
    Error relocating /usr/lib/libLLVM-3.9.so: _ZSt14__once_functor: symbol not found