Dear friends, I am using the boost libraries for my project. When I am compiling the (libboost_filesystem.lib) with my project files libraries which is available in the ibs\filesystem\build\bin\libboost_filesystem.lib\vc7.1\release\runtime-l ink-dynamic , I am facing with the Linking issues which I have listed down. Are you people able to guess where I have gone wrong. Thanks, Vimal Thota Disk Manager error LNK2001: unresolved external symbol "public: __thiscall boost::filesystem::dir_it::~dir_it(void)" (??1dir_it@filesystem@boost@@QAE@XZ) Disk Manager error LNK2001: unresolved external symbol "public: __thiscall boost::filesystem::dir_it::dir_it(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0dir_it@filesystem@boost@@QAE@ABV?$basic_string@DU?$char_traits@D@std @@V?$allocator@D@2@@std@@@Z) Disk Manager error LNK2001: unresolved external symbol "public: __thiscall boost::filesystem::dir_it::dir_it(void)" (??0dir_it@filesystem@boost@@QAE@XZ) Disk Manager error LNK2001: unresolved external symbol "public: __thiscall boost::filesystem::get<struct boost::filesystem::is_directory>::operator bool(void)const " (??B?$get@Uis_directory@filesystem@boost@@@filesystem@boost@@QBE_NXZ) Disk Manager error LNK2001: unresolved external symbol "public: class boost::filesystem::dir_it & __thiscall boost::filesystem::dir_it::operator++(void)" (??Edir_it@filesystem@boost@@QAEAAV012@XZ) Disk Manager error LNK2001: unresolved external symbol "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall boost::filesystem::dir_it::operator*(void)const " (??Ddir_it@filesystem@boost@@QBE?AV?$basic_string@DU?$char_traits@D@std@ @V?$allocator@D@2@@std@@XZ) Disk Manager error LNK2001: unresolved external symbol ___argc Disk Manager error LNK2001: unresolved external symbol ___argv Disk Manager error LNK2001: unresolved external symbol __mbctype Disk Manager error LNK2001: unresolved external symbol __mbctype Disk Manager error LNK2005: "void * __cdecl operator new(unsigned int)" (??2@YAPAXI@Z) already defined in msvcprtd.lib(newop_s.obj) Disk Manager error LNK2005: "void * __cdecl operator new[](unsigned int)" (??_U@YAPAXI@Z) already defined in msvcprtd.lib(newaop_s.obj) Disk Manager error LNK2005: "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) already defined in MSVCRTD.lib(MSVCR71D.dll) Disk Manager error LNK2005: "void __cdecl operator delete[](void *)" (??_V@YAXPAX@Z) already defined in MSVCRTD.lib(MSVCR71D.dll) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall boost::filesystem::dir_it::~dir_it(void)" (??1dir_it@filesystem@boost@@QAE@XZ) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall boost::filesystem::dir_it::dir_it(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0dir_it@filesystem@boost@@QAE@ABV?$basic_string@DU?$char_traits@D@std @@V?$allocator@D@2@@std@@@Z) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall boost::filesystem::dir_it::dir_it(void)" (??0dir_it@filesystem@boost@@QAE@XZ) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall boost::filesystem::get<struct boost::filesystem::ctime>::operator long const *(void)const " (??B?$get@Uctime@filesystem@boost@@@filesystem@boost@@QBEPBJXZ) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall boost::filesystem::get<struct boost::filesystem::is_archive>::operator bool(void)const " (??B?$get@Uis_archive@filesystem@boost@@@filesystem@boost@@QBE_NXZ) referenced in function "public: bool __thiscall DirectoryWatcher::next_archived(void)const " (?next_archived@DirectoryWatcher@@QBE_NXZ) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall boost::filesystem::get<struct boost::filesystem::is_directory>::operator bool(void)const " (??B?$get@Uis_directory@filesystem@boost@@@filesystem@boost@@QBE_NXZ) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall boost::filesystem::get<struct boost::filesystem::mtime>::operator long const *(void)const " (??B?$get@Umtime@filesystem@boost@@@filesystem@boost@@QBEPBJXZ) referenced in function "public: long __thiscall DirectoryWatcher::next_age(void)const " (?next_age@DirectoryWatcher@@QBEJXZ) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall DMWorkflowInterface::~DMWorkflowInterface(void)" (??1DMWorkflowInterface@@QAE@XZ) referenced in function "public: void * __thiscall DMWorkflowInterface::`scalar deleting destructor'(unsigned int)" (??_GDMWorkflowInterface@@QAEPAXI@Z) Disk Manager error LNK2019: unresolved external symbol "public: __thiscall DMWorkflowInterface::DMWorkflowInterface(void)" (??0DMWorkflowInterface@@QAE@XZ) referenced in function "public: virtual void __thiscall DiskManagerService::MainThread(void)" (?MainThread@DiskManagerService@@UAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: bool __thiscall boost::filesystem::dir_it::operator!=(class boost::filesystem::dir_it const &)const " (??9dir_it@filesystem@boost@@QBE_NABV012@@Z) referenced in function "private: void __thiscall DiskManagerService::check_watchers(class std::map<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class DirectoryWatcher *,struct std::less<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >,class std::allocator<struct std::pair<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const ,class DirectoryWatcher *> > > &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?check_watchers@DiskManagerService@@AAEXAAV?$map@V?$basic_string@DU?$ch ar_traits@D@std@@V?$allocator@D@2@@std@@PAVDirectoryWatcher@@U?$less@V?$ basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@V?$allocat or@U?$pair@$$CBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@ std@@PAVDirectoryWatcher@@@std@@@2@@std@@ABV?$basic_string@DU?$char_trai ts@D@std@@V?$allocator@D@2@@3@@Z) Disk Manager error LNK2019: unresolved external symbol "public: bool __thiscall boost::filesystem::dir_it::operator==(class boost::filesystem::dir_it const &)const " (??8dir_it@filesystem@boost@@QBE_NABV012@@Z) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: class boost::filesystem::dir_it & __thiscall boost::filesystem::dir_it::operator++(void)" (??Edir_it@filesystem@boost@@QAEAAV012@XZ) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: class boost::filesystem::dir_it & __thiscall boost::filesystem::dir_it::operator=(class boost::filesystem::dir_it const &)" (??4dir_it@filesystem@boost@@QAEAAV012@ABV012@@Z) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall boost::filesystem::dir_it::operator*(void)const " (??Ddir_it@filesystem@boost@@QBE?AV?$basic_string@DU?$char_traits@D@std@ @V?$allocator@D@2@@std@@XZ) referenced in function "private: void __thiscall DirectoryWatcher::find_next(void)" (?find_next@DirectoryWatcher@@AAEXXZ) Disk Manager error LNK2019: unresolved external symbol __mbctype referenced in function "protected: long __thiscall CEditView::OnFindReplaceCmd(unsigned int,long)" (?OnFindReplaceCmd@CEditView@@IAEJIJ@Z) Disk Manager fatal error LNK1120: 17 unresolved externals Disk Manager warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library This email may contain material that is confidential, privileged and/or attorney work product for the sole use of the intended recipient. 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