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The linker issues 4 error messages about unresolved symbols unless I put the following workaround in the source code of my MFC + COM DLL. Is there a better way to do it? Or if x64 symbols really lack decoration, is there some reason why VC++ 2005 SP1 didnt generate correct source code automatically?
// DllCanUnloadNow - Allows COM to unload DLL<br/>#ifndef _WIN32_WCE<br/>#if 0 // Microsofts code<br/>#pragma comment(linker, "/EXPORT
llCanUnloadNow=_DllCanUnloadNow@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=_DllGetClassObject@12,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=_DllRegisterServer@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=_DllUnregisterServer@0,PRIVATE")<br/>#else // Diamonds workaround 2009.08.28<br/>#ifdef _WIN64<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow=DllCanUnloadNow,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=DllGetClassObject,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=DllRegisterServer,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=DllUnregisterServer,PRIVATE")<br/>#else<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow=_DllCanUnloadNow@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=_DllGetClassObject@12,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=_DllRegisterServer@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=_DllUnregisterServer@0,PRIVATE")<br/>#endif<br/>#endif // Diamonds workaround 2009.08.28<br/>#else<br/>#ifdef _X86_<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow=_DllCanUnloadNow,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=_DllGetClassObject,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=_DllRegisterServer,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=_DllUnregisterServer,PRIVATE")<br/>#else<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer,PRIVATE")<br/>#endif // _X86_<br/>#endif // !_WIN32_WCE
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// DllCanUnloadNow - Allows COM to unload DLL<br/>#ifndef _WIN32_WCE<br/>#if 0 // Microsofts code<br/>#pragma comment(linker, "/EXPORT
llCanUnloadNow=_DllCanUnloadNow@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=_DllGetClassObject@12,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=_DllRegisterServer@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=_DllUnregisterServer@0,PRIVATE")<br/>#else // Diamonds workaround 2009.08.28<br/>#ifdef _WIN64<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow=DllCanUnloadNow,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=DllGetClassObject,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=DllRegisterServer,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=DllUnregisterServer,PRIVATE")<br/>#else<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow=_DllCanUnloadNow@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=_DllGetClassObject@12,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=_DllRegisterServer@0,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=_DllUnregisterServer@0,PRIVATE")<br/>#endif<br/>#endif // Diamonds workaround 2009.08.28<br/>#else<br/>#ifdef _X86_<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow=_DllCanUnloadNow,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject=_DllGetClassObject,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer=_DllRegisterServer,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer=_DllUnregisterServer,PRIVATE")<br/>#else<br/>#pragma comment(linker, "/EXPORTllCanUnloadNow,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllGetClassObject,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllRegisterServer,PRIVATE")<br/>#pragma comment(linker, "/EXPORTllUnregisterServer,PRIVATE")<br/>#endif // _X86_<br/>#endif // !_WIN32_WCE View the full article