I just separated things out and things seemed to work fine. The only thing that might or might not be an issue is header order: #include #include #include #include "polymorphic_derived1.hpp" BOOST_CLASS_EXPORT(polymorphic_derived1) const char * polymorphic_derived1::get_key() const { return boost::serialization::type_info_implementation< polymorphic_derived1

::type::get_const_instance().get_key(); }

Notice I specified extended_type_info_no_rtti.hpp before export.hpp. If I remember correctly, if no type id system header is specified before export is encountered the system may take the rtti one as the default. Since we're not using defaults in this example, its probably not an issue. As far as I know, no one has ever asked a question about using EXPORT without rtti before - at least no one has ever had any questions about it. You may be treading new ground here. Robert Ramey "Daniel Roberts" wrote in message news:14125aaf0901152130l510f8696o6456b51416dd3e9d@mail.gmail.com... Thanks, I had both macros in the header file. I moved the BOOST_CLASS_EXPORT macro to the cpp file and that seems to have fixed it. Now I just need to get things working in my own code. Thanks again. does the header file of polymorphic_derived1's include the following? BOOST_CLASS_TYPE_INFO( polymorphic_derived1, extended_type_info_no_rtti ) Also, the *.cpp file of polymorphic_derived1 should contain BOOST_CLASS_EXPORT(polymorphic_derived1) Robert Ramey _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users