Empty class has link errors...

I just write an empty class as

class AudioLoudnessController {}

And when i build it with vs2012 express, i get the following errors. What' s wrong with that?

Error 4 error LNK2001: unresolved external symbol "__declspec(dllimport) char const * __cdecl std::_Winerror_map(int)" (__imp_?_Winerror_map@std@@YAPBDH@Z) D:\workspace\WaveAnalyzer\AutoAudioCtrl\AudioLoudnessController.obj AutoAudioCtrl
Error 5 error LNK2001: unresolved external symbol "__declspec(dllimport) char const * __cdecl std::_Syserror_map(int)" (__imp_?_Syserror_map@std@@YAPBDH@Z) D:\workspace\WaveAnalyzer\AutoAudioCtrl\AudioLoudnessController.obj AutoAudioCtrl
Error 6 error LNK2001: unresolved external symbol "__declspec(dllimport) void __cdecl std::_Xbad_alloc(void)" (__imp_?_Xbad_alloc@std@@YAXXZ) D:\workspace\WaveAnalyzer\AutoAudioCtrl\AudioLoudnessController.obj AutoAudioCtrl
Error 7 error LNK2001: unresolved external symbol "__declspec(dllimport) void __cdecl std::_Xout_of_range(char const *)" (__imp_?_Xout_of_range@std@@YAXPBD@Z) D:\workspace\WaveAnalyzer\AutoAudioCtrl\AudioLoudnessController.obj AutoAudioCtrl
Error 8 error LNK2001: unresolved external symbol "__declspec(dllimport) void __cdecl std::_Xlength_error(char const *)" (__imp_?_Xlength_error@std@@YAXPBD@Z) D:\workspace\WaveAnalyzer\AutoAudioCtrl\AudioLoudnessController.obj AutoAudioCtrl
Error 9 error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall std::locale::id::id(unsigned int)" (__imp_??0id@locale@std@@QAE@I@Z) D:\workspace\WaveAnalyzer\AutoAudioCtrl\AudioLoudnessController.obj AutoAudioCtrl