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? [英] How to Fix Visual Studio 2012 error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::basic_string?

问题描述

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?

How to fix a Visual Studio 2012 error LNK2019: unresolved external symbol "__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:

I've been compiling a solution containing one exe and several static lib projects on which the exe depends fine with Visual Studio 2008. The static libs include:

• TCL:tcl84tsx.lib
• wxWidgets:wxbase.lib
• zlib.lib
• ws2_32.lib
• xerces-c_2.lib
• SNMP Research EMANATE:subagent.lib、agent.lib、emanate.lib、pack.lib、mibtable.lib、devkit.lib
• 等

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++ 库中内容的未解析符号的错误，如下面的输出.

I loaded the solution into Visual Studio 2012 and have compiled all the projects in the solution but when I try to link the exe, I'm getting errors about unresolved symbols for stuff in the standard C++ library like the output below.

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

I've found lots of people with unresolved symbols like this one but none of the fixes are working for me. Fixes I've tried so far include

• 通过手动添加对 exe 项目所依赖的静态库项目的引用来更新 EXE 项目
• 切换将 wchar_t 视为内置类型"链接器选项

来自 Visual Studio 2012 链接器的输出...

Output from Visual Studio 2012 linker...

 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 ==========

推荐答案

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.

In properties->c/c++->Laguage, I set treat wchar_t as built in type to No and it solved my problem.

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