CXXD_ENABLE_SHARED_FROM_THIS_HEADER — The enable_shared_from_this header file name.
// In header: <boost/cxx_dual/impl/enable_shared_from_this.hpp> CXXD_ENABLE_SHARED_FROM_THIS_HEADER
The object-like macro expands to the include header file designation for the enable_shared_from_this header file. The macro is used with the syntax: #include CXXD_ENABLE_SHARED_FROM_THIS_HEADER
