怎么解决警告啊

warning LNK4068: /MACHINE not specified; defaulting to X86
怎么解决？
debug出错
1>DecoDisplay.obj : error LNK2019: unresolved external symbol "public: __thiscall MSS3_ScreenCodec::ScreenDecoderCore::ScreenDecoderCore(void)" (??0ScreenDecoderCore@MSS3_ScreenCodec@@QAE@XZ) referenced in function "public: __thiscall DecoDisplay::DecoDisplay(void)" (??0DecoDisplay@@QAE@XZ)
1>DecoDisplay.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall MSS3_ScreenCodec::ScreenDecoderCore::~ScreenDecoderCore(void)" (??1ScreenDecoderCore@MSS3_ScreenCodec@@UAE@XZ) referenced in function "public: virtual __thiscall DecoDisplay::~DecoDisplay(void)" (??1DecoDisplay@@UAE@XZ)
1>DecoDisplay.obj : error LNK2019: unresolved external symbol "public: long __thiscall MSS3_ScreenCodec::ScreenDecoderCore::InitDecoder(struct MSS3_ScreenCodec::ScreenCodecSeqHeader *)" (?InitDecoder@ScreenDecoderCore@MSS3_ScreenCodec@@QAEJPAUScreenCodecSeqHeader@2@@Z) referenced in function "public: long __thiscall DecoDisplay::Initial(float,int,float)" (?Initial@DecoDisplay@@QAEJMHM@Z)
1>DecoDisplay.obj : error LNK2019: unresolved external symbol "public: long __thiscall MSS3_ScreenCodec::ScreenDecoderCore::DecodeFrame(struct MSS3_ScreenCodec::Image *,unsigned char *,int *,enum MSS3_ScreenCodec::FrameType *)" (?DecodeFrame@ScreenDecoderCore@MSS3_ScreenCodec@@QAEJPAUImage@2@PAEPAHPAW4FrameType@2@@Z) referenced in function "public: long __thiscall DecoDisplay::Decode(unsigned char *,int *)" (?Decode@DecoDisplay@@QAEJPAEPAH@Z)
1>SDK4 (x86)\Debug/EBoxServerCE.exe : fatal error LNK1120: 4 unresolved externals

release 没错
怎么回事 ？怎么解决？？

是不是不支持你配置的芯片哈...