Bogdan wrote:
As indicated in the boost documentation, the class serialization will only have to be compiled once for all archive implementations (present or future). Therefore, the DLL should contain only the serialization functions to the base polymorphic archives.
While everything builds correctly, at run time I get a C++ exception BEFORE main() in basic_serializer_map.cpp around the line 48:
// if this fails, it's because it's been instantiated // in multiple modules - DLLS - a recipe for problems. // So trap this here if(!result.second){ boost::serialization::throw_exception( archive_exception( archive_exception::multiple_code_instantiation, bs->get_debug_info() ) ); }
Please note BOOST_CLASS_EXPORT_IMPLEMENT is used only once per class (inside polymorphic_derived2.cpp), yet the serializers are inserted in the same map both from the Dll and from the executable.
Am I doing something wrong? Has anyone been able to create a similar working example? I really appreciate any feedback I could get.
It looks like polymorphic_derived2.cpp is being included in both the mainline as well as the DLL. It's not clear that polymorphic_base needs to be n the DLL and probably shouldn't be. Make sure that your header includes BOOST_CLASS_EXPORT_KEY and not BOOST_CLASS_EXPORT. finally, make sure that the test for this facility works. Robert Ramey