如何修复 Visual Studio 2012 错误 LNK2019:未解析的外部符号“__declspec(dllimport) public: class std::basic_string?
我一直在编译一个包含一个 exe 和几个静态库项目的解决方案
exe 依赖于 Visual Studio 2008。静态库包括:
我将解决方案加载到 Visual Studio 2012 中并编译了解决方案中的所有项目，但是当我尝试链接 exe 时，我收到有关标准 C++ 库中未解析符号的错误，如下面的输出。
我发现很多人都有像这样的未解析符号，但没有一个修复对我有用。到目前为止我尝试过的修复包括
Visual Studio 2012 链接器的输出...
1>ace_funcs.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/OPT:LBR' specification
1>LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1>ComponentX-Win32.lib(MyOrgConsoleSktServer.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentY-Win32.lib(ORBSingleton.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentY-Win32.lib(OrbException.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentZ-Win32.lib(ExceptionHelper.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentZ-Win32.lib(ComponentCCheckpointImpl.obj) : warning LNK4217: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported in function "public: __thiscall std::logic_error::logic_error(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0logic_error@std@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@@Z)
1>ComponentX-Win32.lib(MyOrgConsole.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentX-Win32.lib(MyOrgThreadFactory.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentZ-Win32.lib(PersistenceServiceProxy.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentZ-Win32.lib(ComponentBServiceImpl.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentZ-Win32.lib(XmlPreferencesHelper.obj) : warning LNK4217: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported in function "private: void __thiscall _CORBA_Sequence_String::copybuffer(unsigned long)" (?copybuffer@_CORBA_Sequence_String@@AAEXK@Z)
1>ComponentZ-Win32.lib(XmlHelper.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentA-Win32.lib(ServiceBootstrap.obj) : warning LNK4217: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported in function "public: __thiscall std::logic_error::logic_error(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (??0logic_error@std@@QAE@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@1@@Z)
1>ComponentA-Win32.lib(propertyutil.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentA-Win32.lib(SystemEnvironment.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentZ-Win32.lib(PersistenceClient.obj) : warning LNK4049: locally defined symbol ??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@@Z (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)) imported
1>ComponentY-Win32.lib(OrbException.obj) : warning LNK4049: locally defined symbol ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::~basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(void)) imported
1>ComponentX-Win32.lib(MyOrgConsole.obj) : warning LNK4049: locally defined symbol ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::~basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(void)) imported
1>ComponentX-Win32.lib(MyOrgThreadFactory.obj) : warning LNK4049: locally defined symbol ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::~basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(void)) imported
1>ComponentX-Win32.lib(MyOrgConsoleSktServer.obj) : warning LNK4049: locally defined symbol ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::~basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(void)) imported
1>ComponentY-Win32.lib(ORBSingleton.obj) : warning LNK4217: locally defined symbol ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::~basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(void)) imported in function "public: virtual __thiscall OrbException::~OrbException(void)" (??1OrbException@@UAE@XZ)
1>ComponentZ-Win32.lib(XmlPreferencesHelper.obj) : warning LNK4049: locally defined symbol ??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@XZ (public: __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::~basic_string<char,struct std::char_traits<char>,class std::allocator<char> >(void)) imported
-- snip --
1>ComponentA-Win32.lib(ServiceBootstrap.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::substr(unsigned int,unsigned int)const " (__imp_?substr@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBE?AV12@II@Z) referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall ServiceBootstrap::trimmed(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,char const *)" (?trimmed@ServiceBootstrap@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV23@PBD@Z)
1>ComponentA-Win32.lib(ServiceBootstrap.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: unsigned int __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::find_last_not_of(char const *,unsigned int,unsigned int)const " (__imp_?find_last_not_of@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIPBDII@Z) referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall ServiceBootstrap::trimmed(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,char const *)" (?trimmed@ServiceBootstrap@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV23@PBD@Z)
1>ComponentA-Win32.lib(ServiceBootstrap.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: unsigned int __thiscall std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >::find_first_not_of(char const *,unsigned int,unsigned int)const " (__imp_?find_first_not_of@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QBEIPBDII@Z) referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall ServiceBootstrap::trimmed(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,char const *)" (?trimmed@ServiceBootstrap@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV23@PBD@Z)
1>ComponentA-Win32.lib(ServiceBootstrap.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl std::operator+<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,char const *)" (__imp_??$?HDU?$char_traits@D@std@@V?$allocator@D@1@@std@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@ABV10@PBD@Z) referenced in function "private: void __thiscall ServiceBootstrap::verifyBootstrapProperties(void)" (?verifyBootstrapProperties@ServiceBootstrap@@AAEXXZ)
1>ComponentZ-Win32.lib(PersistenceServiceProxy.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl std::operator+<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,char const *)" (__imp_??$?HDU?$char_traits@D@std@@V?$allocator@D@1@@std@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@ABV10@PBD@Z)
1>ComponentA-Win32.lib(ServiceBootstrap.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl std::operator+<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (__imp_??$?HDU?$char_traits@D@std@@V?$allocator@D@1@@std@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@ABV10@0@Z) referenced in function "public: class std::map<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,struct std::less<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >,class std::allocator<struct std::pair<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const ,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > > > __thiscall ServiceBootstrap::getBootstrapProperties(void)" (?getBootstrapProperties@ServiceBootstrap@@QAE?AV?$map@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V12@U?$less@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@V?$allocator@U?$pair@$$CBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V12@@std@@@2@@std@@XZ)
1>ComponentZ-Win32.lib(PersistenceServiceProxy.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl std::operator+<char,struct std::char_traits<char>,class std::allocator<char> >(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (__imp_??$?HDU?$char_traits@D@std@@V?$allocator@D@1@@std@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@ABV10@0@Z)
1>ComponentA-Win32.lib(propertyutil.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::_Mutex::_Lock(void)" (__imp_?_Lock@_Mutex@std@@QAEXXZ) referenced in function "public: __thiscall std::basic_ostream<char,struct std::char_traits<char> >::_Sentry_base::_Sentry_base(class std::basic_ostream<char,struct std::char_traits<char> > &)" (??0_Sentry_base@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAE@AAV12@@Z)
1>ComponentZ-Win32.lib(XmlHelper.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::_Mutex::_Lock(void)" (__imp_?_Lock@_Mutex@std@@QAEXXZ)
-- snip --
1>.\Debug/sComponentC.exe : fatal error LNK1120: 22 unresolved externals
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
最佳答案
在properties->c/c++->Laguage 中，我将treat wchar_t as built in type 设置为No，它解决了我的问题。
关于visual-studio-2012 - 如何修复 Visual Studio 2012 错误 LNK2019:无法解析的外部符号“__declspec(dllimport) public: class std::basic_string?，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15529666/