vc6.0 链接错误 ‘ libcp.lib error LNK2001 unresolved external symbol ‘ 的处理

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vc6.0 链接错误’ libcp.lib error LNK2001 unresolved external symbol ‘的处理

在编译链接(release)时产生如下错误:

libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _sprintf
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _sprintf
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _sprintf
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol ___CxxFrameHandler
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol ___CxxFrameHandler
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol ___CxxFrameHandler
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol ___CxxFrameHandler
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol ___CxxFrameHandle
libcp.lib(iostream.obj) : error LNK2001: unresolved external symbol _fclose
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _fclose
libcp.lib(fiopen.obj) : error LNK2001: unresolved external symbol _fclose
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _memmove
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _memmove
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol _memmove
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _memmove
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _memmove
libcp.lib(ios.obj) : error LNK2001: unresolved external symbol "void * __cdecl operator new(unsigned int)" (??2@YAPAXI@Z)
libcp.lib(iostream.obj) : error LNK2001: unresolved external symbol "void * __cdecl operator new(unsigned int)" (??2@YAPAXI@Z)
libcp.lib(string.obj) : error LNK2001: unresolved external symbol "void * __cdecl operator new(unsigned int)" (??2@YAPAXI@Z)
libcp.lib(nomemory.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(class exception const &)" (??0exception@@QAE@ABV0@@Z)
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(class exception const &)" (??0exception@@QAE@ABV0@@Z)
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(class exception const &)" (??0exception@@QAE@ABV0@@Z)
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol "const type_info::`vftable'" (??_7type_info@@6B@)
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol "const type_info::`vftable'" (??_7type_info@@6B@)
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol "const type_info::`vftable'" (??_7type_info@@6B@)
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol "const type_info::`vftable'" (??_7type_info@@6B@)
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol "const type_info::`vftable'" (??_7type_info@@6B@)
libcp.lib(nomemory.obj) : error LNK2001: unresolved external symbol "const type_info::`vftable'" (??_7type_info@@6B@)
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol "public: virtual char const * __thiscall exception::what(void)const " (?what@exception@@UBEPBDXZ)
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol "public: virtual char const * __thiscall exception::what(void)const " (?what@exception@@UBEPBDXZ)
libcp.lib(nomemory.obj) : error LNK2001: unresolved external symbol "public: virtual char const * __thiscall exception::what(void)const " (?what@exception@@UBEPBDXZ)
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol "public: virtual char const * __thiscall exception::what(void)const " (?what@exception@@UBEPBDXZ)
libcp.lib(nomemory.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(char const * const &)" (??0exception@@QAE@ABQBD@Z)
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(char const * const &)" (??0exception@@QAE@ABQBD@Z)
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(char const * const &)" (??0exception@@QAE@ABQBD@Z)
libcp.lib(ios.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(char const * const &)" (??0exception@@QAE@ABQBD@Z)
libcp.lib(string.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(char const * const &)" (??0exception@@QAE@ABQBD@Z)
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol "public: __thiscall exception::exception(char const * const &)" (??0exception@@QAE@ABQBD@Z)
libcp.lib(nomemory.obj) : error LNK2001: unresolved external symbol "public: virtual __thiscall exception::~exception(void)" (??1exception@@UAE@XZ)
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol "public: virtual __thiscall exception::~exception(void)" (??1exception@@UAE@XZ)
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol "public: virtual __thiscall exception::~exception(void)" (??1exception@@UAE@XZ)
libcp.lib(ios.obj) : error LNK2001: unresolved external symbol "public: virtual __thiscall exception::~exception(void)" (??1exception@@UAE@XZ)
libcp.lib(string.obj) : error LNK2001: unresolved external symbol "public: virtual __thiscall exception::~exception(void)" (??1exception@@UAE@XZ)
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol "public: virtual __thiscall exception::~exception(void)" (??1exception@@UAE@XZ)
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _free
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _free
libcp.lib(delop.obj) : error LNK2001: unresolved external symbol _free
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol _free
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _free
LINK : error LNK2001: unresolved external symbol _mainCRTStartup
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(ios.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(iostream.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(string.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _strlen
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(ios.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(iostream.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(string.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol __EH_prolog
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(xwctomb.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(ios.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(iostream.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(string.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _memcpy
libcp.lib(iostream.obj) : error LNK2001: unresolved external symbol __iob
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol __iob
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _memset
libcp.lib(iostream.obj) : error LNK2001: unresolved external symbol _memset
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _memset
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _memset
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _memset
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _fputwc
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _ungetwc
libcp.lib(wiostrea.obj) : error LNK2001: unresolved external symbol _fgetwc
libcp.lib(locale0.obj) : error LNK2001: unresolved external symbol _memcmp
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _memcmp
libcp.lib(xstrcoll.obj) : error LNK2001: unresolved external symbol _memcmp
libcp.lib(fiopen.obj) : error LNK2001: unresolved external symbol _fopen
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _setlocale
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _malloc
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol _malloc
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _realloc
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _strtoul
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _strtoul
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _errno
libcp.lib(xstrcoll.obj) : error LNK2001: unresolved external symbol _errno
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _errno
libcp.lib(xwctomb.obj) : error LNK2001: unresolved external symbol _errno
libcp.lib(xmbtowc.obj) : error LNK2001: unresolved external symbol _errno
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _errno
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _strtol
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _strtol
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _strtol
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _localeconv
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _localeconv
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol _localeconv
libcp.lib(locale.obj) : error LNK2001: unresolved external symbol _strcspn
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _strcspn
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol ___crtLCMapStringA
libcp.lib(_toupper.obj) : error LNK2001: unresolved external symbol ___crtLCMapStringA
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol __pctype
libcp.lib(_toupper.obj) : error LNK2001: unresolved external symbol __pctype
libcp.lib(xmbtowc.obj) : error LNK2001: unresolved external symbol __pctype
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol __isctype
libcp.lib(_toupper.obj) : error LNK2001: unresolved external symbol __isctype
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol ___mb_cur_max
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol ___mb_cur_max
libcp.lib(_toupper.obj) : error LNK2001: unresolved external symbol ___mb_cur_max
libcp.lib(xwctomb.obj) : error LNK2001: unresolved external symbol ___mb_cur_max
libcp.lib(xmbtowc.obj) : error LNK2001: unresolved external symbol ___mb_cur_max
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol ___lc_codepage
libcp.lib(_toupper.obj) : error LNK2001: unresolved external symbol ___lc_codepage
libcp.lib(xwctomb.obj) : error LNK2001: unresolved external symbol ___lc_codepage
libcp.lib(xmbtowc.obj) : error LNK2001: unresolved external symbol ___lc_codepage
libcp.lib(xstrcoll.obj) : error LNK2001: unresolved external symbol ___lc_handle
libcp.lib(_tolower.obj) : error LNK2001: unresolved external symbol ___lc_handle
libcp.lib(_toupper.obj) : error LNK2001: unresolved external symbol ___lc_handle
libcp.lib(xwctomb.obj) : error LNK2001: unresolved external symbol ___lc_handle
libcp.lib(xmbtowc.obj) : error LNK2001: unresolved external symbol ___lc_handle
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol __Strftime
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol __Strftime
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol _wcslen
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol __Gettnames
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol __Gettnames
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol __Getdays
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol __Getdays
libcp.lib(wlocale.obj) : error LNK2001: unresolved external symbol __Getmonths
libcp.lib(xlocale.obj) : error LNK2001: unresolved external symbol __Getmonths
libcp.lib(xstod.obj) : error LNK2001: unresolved external symbol _strtod
libcp.lib(xstrcoll.obj) : error LNK2001: unresolved external symbol ___crtCompareStringA
libcp.lib(xstrcoll.obj) : error LNK2001: unresolved external symbol ___lc_collate_cp
...

上面的错误是由于程序中引用了多线程库，而默认使用单线程链接导致libcp.lib不能正确链接。那么解决它，只要改成对应的Multithread(/MT)多线程库就可以了。
vc6.0 链接错误 ' libcp.lib error LNK2001 unresolved external symbol ' 的处理
最后总结下/ML、/MT、/MD选项和库之间的对应关系，如下表：

library

version

C run-time library

standard C++ library

release

debug

release

debug

opt

import

dll

opt

import

dll

opt

import

dll

opt

import

dll

static library

single thread

/ML

libc.lib

—

/MLd

libcd.lib

—

/ML

libcp.lib

—

/MLd

libcp.lib

—

multithread

/MT

libcmt.lib

—

/MTd

libcmtd.lib

—

/MT

libcpmt.lib

—

/MTd

libcpmtd.lib

—

dynamic library

visual studio 6.0

/MD

msvcrt.lib

msvcrt.dll

/MDd

msvcrtd.lib

msvcrtd.dll

/MD

msvcprt.lib

msvcp60.dll

/MDd

msvcprtd.lib

msvcp60d.dll

visual studio 2005

msvcr80.dll

msvcr80d.dll

msvcp80.dll

msvcp80d.dll

visual studio 2008

msvcr90.dll

msvcr90d.dll

msvcp90.dll

msvcp90d.dll

visual studio 2010

msvcr100.dll

msvcr100d.dll

msvcp100.dll

msvcp100d.dll

visual studio 2013

msvcr120.dll

msvcr120d.dll

msvcp120.dll

msvcp120d.dll

Note Starting in Visual C++ 2005, LIBCP.LIB and LIBCPD.LIB (via the old /ML and /MLd options) have been removed. Use LIBCPMT.LIB and LIBCPMTD.LIB instead via the /MT and /MTd options.
其中 /ML、/MLd选项和libcp.lib、libcpd.lib库在Visual C++ 2005版编译器及后继续的版本中将被删除。取而代之的是/MT、/MTd选项和libcpmt.lib、libcpmtd.lib引入库文件。

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vc6.0 链接错误 ‘ libcp.lib error LNK2001 unresolved external symbol ‘ 的处理

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