Linker Error in CLR library file while linking to native C++ application.
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I have a CLR Application where I am trying to write a .NET wrapper over calls made to native C++ Library. I am using VS 2008 but libraries are compiled in VS2003 or 2005. I am getting some linker errors on linking. Strangely, every error is 1 of these 3 unresolved external symbol ones - 1. std::locale::facet::_Register 2. std::ctype&::_Getcat 3. std::strstream::strstream Details of the errors - error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall std::strstream::~strstream(void)" (__imp_??1strstream@std@@UAE@XZ) error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::locale::facet::_Register(void)" (__imp_?_Register@facet@locale@std@@QAEXXZ) error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::locale::facet::_Register(void)" (__imp_?_Register@facet@locale@std@@QAEXXZ) error LNK2001: unresolved external symbol "__declspec(dllimport) public: static unsigned int __cdecl std::ctype<char>::_Getcat(class std::locale::facet const * *)" (__imp_?_Getcat@?$ctype@D@std@@SAIPAPBVfacet@locale@2@@Z) error LNK2001: unresolved external symbol "__declspec(dllimport) public: static unsigned int __cdecl std::ctype<char>::_Getcat(class std::locale::facet const * *)" (__imp_?_Getcat@?$ctype@D@std@@SAIPAPBVfacet@locale@2@@Z) error LNK2001: unresolved external symbol "__declspec(dllimport) public: static unsigned int __cdecl std::ctype<unsigned short>::_Getcat(class std::locale::facet const * *)" (__imp_?_Getcat@?$ctype@G@std@@SAIPAPBVfacet@locale@2@@Z) error LNK2001: unresolved external symbol "__declspec(dllimport) public: static unsigned int __cdecl std::ctype<unsigned short>::_Getcat(class std::locale::facet const * *)" (__imp_?_Getcat@?$ctype@G@std@@SAIPAPBVfacet@locale@2@@Z) error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall std::strstream::strstream(char *,int,int)" (__imp_??0strstream@std@@QAE@PADHH@Z) Thanks a lot for the help. Amit