如何在vc的项目中导入.obj文件

我把相应的几个obj文件放到debug目录
然后再link总指定路径
怎么link出现这么多错误

请指点




--------------------Configuration: RomConvert - Win32 Debug--------------------
Linking...
LZSD.OBJ : error LNK2005: _CopyString already defined in LZSD.OBJ
LZSD.OBJ : error LNK2005: _LZS_C_InitializeDecompressionHistory already defined in LZSD.OBJ
LZSD.OBJ : error LNK2005: _LZS_C_SizeOfDecompressionHistory already defined in LZSD.OBJ
LZSD.OBJ : error LNK2005: _ExpandLzsEngine already defined in LZSD.OBJ
LZSD.OBJ : error LNK2005: _EocdToken already defined in LZSD.OBJ
LZSD.OBJ : error LNK2005: _LZS_C_Decompress already defined in LZSD.OBJ
LZSC.OBJ : error LNK2005: _LZS_C_InitializeCompressionHistory already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _LZS_C_InitializeHashBuckets already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _ScrapBufferInitialize already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _ScrapBufferUpdate already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _SynchronizeSourcePointer already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _PrepareScrapBufferForNextCall already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _UpdateSource already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _ReallyOutOfSource already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _LZS_C_SizeOfCompressionHistory already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _LZS_C_Compress already defined in LZSC.OBJ
LZSC.OBJ : error LNK2005: _LZS_C_FastEngine already defined in LZSC.OBJ
HIFNUTIL.OBJ : error LNK2005: _HIFN_UtilCopy already defined in HIFNUTIL.OBJ
HIFNUTIL.OBJ : error LNK2005: _HIFN_UtilMove already defined in HIFNUTIL.OBJ
HIFNUTIL.OBJ : error LNK2005: _HIFN_UtilClear already defined in HIFNUTIL.OBJ
HIFNUTIL.OBJ : error LNK2005: _HIFN_UtilGetRandomByte already defined in HIFNUTIL.OBJ
HIFNUTIL.OBJ : error LNK2005: _HIFN_UtilGetRandomU32b already defined in HIFNUTIL.OBJ
SPT_CMP.OBJ : error LNK2005: _cmpAlloc already defined in SPT_CMP.OBJ
SPT_CMP.OBJ : error LNK2005: _cmpRead already defined in SPT_CMP.OBJ
SPT_CMP.OBJ : error LNK2005: _cmpWrite already defined in SPT_CMP.OBJ
SPT_CMP.OBJ : error LNK2005: _cmpFree already defined in SPT_CMP.OBJ
SPT_CMP.OBJ : error LNK2005: _cmpSkip already defined in SPT_CMP.OBJ
msvcrtd.lib(MSVCRTD.dll) : error LNK2005: _free already defined in libc.lib(free.obj)
msvcrtd.lib(MSVCRTD.dll) : error LNK2005: _malloc already defined in libc.lib(malloc.obj)
msvcrtd.lib(MSVCRTD.dll) : error LNK2005: __setmbcp already defined in libc.lib(mbctype.obj)
LINK : warning LNK4098: defaultlib "LIBCD" conflicts with use of other libs; use /NODEFAULTLIB:library
LINK : warning LNK4098: defaultlib "msvcrtd.lib" conflicts with use of other libs; use /NODEFAULTLIB:library
SPT_CMP.OBJ : error LNK2001: unresolved external symbol _get16
SPT_CMP.OBJ : error LNK2001: unresolved external symbol _get16
SPT_CMP.OBJ : error LNK2001: unresolved external symbol _put16
SPT_CMP.OBJ : error LNK2001: unresolved external symbol _put16
SPT_CMP.OBJ : error LNK2001: unresolved external symbol _sptlen
SPT_CMP.OBJ : error LNK2001: unresolved external symbol _sptlen
Debug/RomConvert.exe : fatal error LNK1120: 3 unresolved externals
Error executing link.exe.

RomConvert.exe - 37 error(s), 2 warning(s)