Re: [boost] [config] NO_USER_DEFINED_LITERALS ?

does Boost.Config provide some macro for the detection of (un)availability of user-defined literals (N2765) ? I could not find any in the docs for 1.51.0 nor by grepping in the boost/config/* files.

If not, would there be a big problem adding it (called for example BOOST_NO_USER_DEFINED_LITERALS), please ?

Is this any different from BOOST_NO_CONSTEXPR ? John.