"elizabeta petreska" <elizabeta.petreska@gmail.com> wrote in message news:ff8898bd0911250648l9bdd3a3g47408714e88bebf3@mail.gmail.com... Hello I can't compile my simple project for serializing shared_ptr . I read the archives and google it and still can't compile it :) I am doing the following :... I compiled your program slightly modified on my boost 1.41 system with no problems: /////A.h #pragma once #include <fstream> #include <boost/archive/xml_iarchive.hpp> #include <boost/archive/xml_oarchive.hpp> #include <boost/serialization/nvp.hpp> #include <boost/serialization/shared_ptr.hpp> class A { public: A(int k): mk(k) {} A(){} template<class Archive> void save(Archive & ar, const unsigned int version) const { using boost::serialization::make_nvp; ar & BOOST_SERIALIZATION_NVP(mk); } template<class Archive> void load(Archive & ar, const unsigned int version) { using boost::serialization::make_nvp; ar & BOOST_SERIALIZATION_NVP(mk); } BOOST_SERIALIZATION_SPLIT_MEMBER() int mk; }; BOOST_SERIALIZATION_SHARED_PTR(A) ///func.cpp //#include "A.h" void func() { //std::ofstream ofs(L"C:\\boostarchiveSharedPtr.xml"); //std::ifstream ifs(L"C:\\boostarchiveSharedPtr.xml"); std::ofstream ofs("C:\\boostarchiveSharedPtr.xml"); std::ifstream ifs("C:\\boostarchiveSharedPtr.xml"); boost::shared_ptr<A> bPtr(new A(13)); { using boost::serialization::make_nvp; boost::archive::xml_oarchive oa(ofs); oa & BOOST_SERIALIZATION_NVP(bPtr); } boost::shared_ptr<A> rbPtr; { using boost::serialization::make_nvp; boost::archive::xml_iarchive ia(ifs); ia & BOOST_SERIALIZATION_NVP(rbPtr); } }