In file included from /build/boost/fusion/include/make_map.hpp:10,
from /build/boost/msm/front/euml/common.hpp:40,
from /build/boost/msm/front/euml/operator.hpp:15,
from /build/abc.cc:15:
cc1plus: warnings being treated as errors
/build/boost/msm/back/fold_to_list.hpp:35: warning: 'boost::msm::back::states_' defined but not used