# define BOOST_NO_CXX11_HDR_CHRONO
# define BOOST_NO_CXX11_HDR_CODECVT
# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
+# define BOOST_NO_CXX11_HDR_EXCEPTION
# define BOOST_NO_CXX11_HDR_FORWARD_LIST
# define BOOST_NO_CXX11_HDR_FUTURE
# define BOOST_NO_CXX11_HDR_INITIALIZER_LIST