# define BOOST_PREPROCESSOR_FACILITIES_HPP
#
# include <boost/preprocessor/facilities/apply.hpp>
+# include <boost/preprocessor/facilities/check_empty.hpp>
# include <boost/preprocessor/facilities/empty.hpp>
# include <boost/preprocessor/facilities/expand.hpp>
# include <boost/preprocessor/facilities/identity.hpp>
# include <boost/preprocessor/facilities/intercept.hpp>
# include <boost/preprocessor/facilities/overload.hpp>
+# include <boost/preprocessor/facilities/va_opt.hpp>
#
# endif