Hello, I am using boost1.33.1 and spirit1.6 and borland c++ builder. I have a compilation problem with the following source code. The error message is [C++ Error] void_cast.hpp(154): E2451 Undefined symbol 'get_instance' [C++ Error] void_cast.hpp(155): E2451 Undefined symbol 'get_instance' [C++ Error] void_cast.hpp(154): E2285 Could not find a match for 'void_caster::void_caster(undefined,undefined)' Can anybody help me fixing this compilation problem ? Than you in advance. Marc. //--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include <boost/serialization/utility.hpp> // includes for xml serialization #include <boost/archive/xml_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/basic_xml_oarchive.hpp> #include <boost/archive/basic_xml_iarchive.hpp> #include <boost/archive/impl/xml_iarchive_impl.ipp> #include <boost/archive/impl/xml_oarchive_impl.ipp> #include <boost/archive/impl/basic_xml_oarchive.ipp> #include <boost/archive/impl/basic_xml_iarchive.ipp> #include <boost/archive/basic_text_oprimitive.hpp> #include <boost/archive/basic_text_iprimitive.hpp> #include <boost/archive/impl/basic_text_oprimitive.ipp> #include <boost/archive/impl/basic_text_iprimitive.ipp> #include <boost/archive/impl/basic_xml_grammar.hpp> #include <libs/serialization/src/basic_xml_grammar.ipp> #include <boost/serialization/nvp.hpp> #include <boost/serialization/base_object.hpp> #include <boost/serialization/export.hpp> #include <boost/serialization/type_info_implementation.hpp> #include <boost/serialization/extended_type_info_no_rtti.hpp> #include <boost/serialization/extended_type_info_typeid.hpp> #include<iostream> #include<fstream> #include <vector> #include <boost/serialization/vector.hpp> class BaseClass { protected: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(m_degrees); ar & BOOST_SERIALIZATION_NVP(m_minutes); ar & BOOST_SERIALIZATION_NVP(m_seconds); } int m_degrees; int m_minutes; float m_seconds; public: BaseClass() { m_degrees = 0; m_minutes = 0; m_seconds = 0.0; } BaseClass(int degrees, int minutes, float seconds) { m_degrees = degrees; m_minutes = minutes; m_seconds = seconds; } virtual void display() const { std::cout << "------------------------------------" << std::endl; std::cout << "m_degrees= " << m_degrees << std::endl; std::cout << "m_minutes= " << m_minutes << std::endl; std::cout << "m_seconds= " << m_seconds << std::endl; std::cout << "------------------------------------" << std::endl; } }; BOOST_CLASS_TYPE_INFO( BaseClass, extended_type_info_no_rtti<BaseClass> ) BOOST_CLASS_EXPORT(BaseClass) class DerivedClass1: public BaseClass { protected: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int version) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(BaseClass); // ar & BOOST_SERIALIZATION_NVP(m_vector); } mutable std::vector<int> m_vector; public: DerivedClass1(): BaseClass() { } DerivedClass1(int degrees, int minutes, float seconds): BaseClass(degrees, minutes, seconds) { } void push_back(int arg) const { m_vector.push_back(arg); } virtual void display() const { std::cout << "***********************************************" << std::endl; BaseClass::display(); for (std::vector<int>::const_iterator iter=m_vector.begin(); iter!=m_vector.end(); iter++) { std::cout << " value= " << *iter << std::endl; } std::cout << "***********************************************" << std::endl; } }; BOOST_CLASS_TYPE_INFO( DerivedClass1, extended_type_info_no_rtti<DerivedClass1> ) BOOST_CLASS_EXPORT(DerivedClass1) BOOST_CLASS_TYPE_INFO( std::vector<double>, extended_type_info_no_rtti<std::vector<double> > ) BOOST_CLASS_EXPORT(std::vector<double>) int main() { const DerivedClass1 g(35, 59, 24.567f); g.push_back(10); g.push_back(20); g.push_back(30); g.display(); { std::ofstream ofs("filename"); boost::archive::xml_oarchive oa(ofs); oa << boost::serialization::make_nvp("g1", g); } DerivedClass1 newg; { std::ifstream ifs("filename"); boost::archive::xml_iarchive ia(ifs); ia >> boost::serialization::make_nvp("g1", newg); } newg.display(); return 0; } //--------------------------------------------------------------------------- /* ------------------------------------------------------------- Noos, votre bureau virtuel sur Internet : Mail... Web : webmail.noos.fr