構建調試時鏈接錯誤

Question

每當我在Release中構建代碼時，它都會編譯並運行正常。但是，當我切換到Debug時，出現了一些我似乎無法弄清楚的錯誤。

swift.lib(scene.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj 
1>swift.lib(fileio.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj 
1>swift.lib(mesh_utils.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj 
1>swift.lib(object.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj 
1>swift.lib(mesh.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj 
1>swift.lib(pair.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj 
1>swift.lib(lut.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in main.obj 
1>msvcprt.lib(MSVCP100.dll) : error LNK2005: "public: class std::basic_ostream<char,struct std::char_traits<char> > & __thiscall std::basic_ostream<char,struct std::char_traits<char> >::flush(void)" (?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV12@XZ) already defined in main.obj 
1>msvcprt.lib(MSVCP100.dll) : error LNK2005: "public: void __thiscall std::basic_ostream<char,struct std::char_traits<char> >::_Osfx(void)" (?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEXXZ) already defined in main.obj 
1>msvcprt.lib(MSVCP100.dll) : error LNK2005: "bool __cdecl std::uncaught_exception(void)" (?uncaught_exception@std@@YA_NXZ) already defined in libcpmtd.lib(uncaught.obj) 
1>msvcprt.lib(MSVCP100.dll) : error LNK2005: "public: void __thiscall std::basic_ios<char,struct std::char_traits<char> >::setstate(int,bool)" (?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXH_N@Z) already defined in main.obj 
1>msvcprt.lib(MSVCP100.dll) : error LNK2005: "public: __int64 __thiscall std::basic_streambuf<char,struct std::char_traits<char> >::sputn(char const *,__int64)" (?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAE_JPBD_J@Z) already defined in main.obj 

一堆更多的，然後......

1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: "public: __thiscall std::exception::exception(char const * const &)" (??0exception@std@@QAE@ABQBD@Z) already defined in LIBCMTD.lib(stdexcpt.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: "public: virtual __thiscall std::exception::~exception(void)" (??1exception@std@@UAE@XZ) already defined in LIBCMTD.lib(stdexcpt.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: "public: __thiscall std::bad_cast::bad_cast(char const *)" (??0bad_cast@std@@QAE@PBD@Z) already defined in LIBCMTD.lib(stdexcpt.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: "public: __thiscall std::exception::exception(class std::exception const &)" (??0exception@std@@QAE@ABV01@@Z) already defined in LIBCMTD.lib(stdexcpt.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _memmove already defined in LIBCMTD.lib(memmove.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _fgetc already defined in LIBCMTD.lib(fgetc.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _fputc already defined in LIBCMTD.lib(fputc.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _ungetc already defined in LIBCMTD.lib(ungetc.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: __lock_file already defined in LIBCMTD.lib(_file.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: __unlock_file already defined in LIBCMTD.lib(_file.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _fflush already defined in LIBCMTD.lib(fflush.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _setvbuf already defined in LIBCMTD.lib(setvbuf.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _strncmp already defined in LIBCMTD.lib(strncmp.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _memcpy_s already defined in LIBCMTD.lib(memcpy_s.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _fwrite already defined in LIBCMTD.lib(fwrite.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _fgetpos already defined in LIBCMTD.lib(fgetpos.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: __fseeki64 already defined in LIBCMTD.lib(fseeki64.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _fsetpos already defined in LIBCMTD.lib(fsetpos.obj) 
1>MSVCRT.lib(MSVCR100.dll) : error LNK2005: _fclose already defined in LIBCMTD.lib(fclose.obj) 
1>MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: __thiscall type_info::type_info(class type_info const &)" (??0type_info@@AAE@ABV0@@Z) already defined in LIBCMTD.lib(typinfo.obj) 
1>MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: class type_info & __thiscall type_info::operator=(class type_info const &)" (??4type_info@@AAEAAV0@ABV0@@Z) already defined in LIBCMTD.lib(typinfo.obj) 
1>LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library 
1>C:\...\: fatal error  LNK1169: one or more multiply defined symbols found 

我同時使用SWIFT和操作碼庫。我在C++中有「運行時庫」字段 - >代碼生成對於所有3個項目（我的主項目，swift，操作碼）都是相同的。我已經嘗試將它們全部設置爲\ MT，並且全部設置爲\ MD以用於調試模式，但都不起作用。實際上，當它在Release中成功構建時，我必須將Opcode和我的活動項目設置爲\ MD（swift可以是\ md或\ mt，它仍然可以構建）。我不是很瞭解運行時庫很好鏈接...所以如果這是問題，你可以嘗試明確嗎？

我也去找_ITERATOR_DEBUG_LEVEL，但找不到它。我應該在哪裏找到它來改變它？我無法在源代碼中找到它。我沒有在項目屬性中看到它，但是我只是沒有在屬性中尋找正確的位置，這是完全合理的。

顯然人們有錯誤匹配的字符集有類似的錯誤。我已經嘗試將它們全部設置爲多個，並全部設置爲unicode。這似乎沒有任何影響。

目前，我的活動項目只有swift.lib作爲附加依賴項。我有opcode.dll和opcode_d.dll，所以我不會靜態鏈接這些。

在預處理器下C/C++的設置，我有以下預處理器定義：

操作碼：

WIN32 
_DEBUG 
_WINDOWS 
_USRDLL 
OPCODE_EXPORTS 

SWIFT：

_DEBUG 
WIN32 
_LIB 
LOOKUP_TABLE_5_625 

活動項目：

WIN32 
_DEBUG 
_CONSOLE 

如果需要，我可以提供更多信息。謝謝你的幫助。

Answer 1

這聽起來像你已經確保C運行時庫（CRT）是所有項目一致的，這是首選的做法。由於它使用CRT的獨立副本，因此對於您的DLL項目不那麼重要。

下一步是查看項目設置的「預處理器」頁面。您正在尋找可能在三個項目中發生衝突的預處理器（宏）定義。我相信你會在列表中找到_ITERATOR_DEBUG_LEVEL。

我不知道如何在StackOverflow上發佈後續問題，但是您可以將您在每個項目中找到的宏定義添加到您的問題中。