VC.net的工程转化到VC6.0遇到的问题

2005-08-25 01:12:31 216 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

奥卡姆剃刀、VC维与NFL定理：破解过拟合与欠拟合的三大理论基石机器学习中的过拟合与欠拟合本质是模型复杂度、数据分布与泛化能力之间的失衡问题。奥卡姆剃刀揭示了‘最简必要假设’的建模哲学，指导我们避免冗余表达；VC维数则从统计学习理论出发，为模型‘记忆容量’提供可量化标尺，揭示训练误差与泛化误差间的根本约束；无免费午餐定理破除万能模型幻觉，强调算法性能高度依赖数据分布匹配度。这三者共同构成理解泛化失败的底层逻辑框架，广泛应用于模型选型、正则设计、早停策略与MLOps监控等工程实践。本文聚焦于如何将这些经典理论转化为可执行的诊断指标与调优动作，助力工程师在真实业务场景中系统阅读详情

我尝试将一个VC.net的工程转化到VC6.0,遇到如下问题：

第一步，新建一个空的WIN32工程，将所有的文件, .h .cpp .res 加进来

第二步，编译通过，而LINK 出现如下错误

nafxcwd.lib(afxmem.obj) : error LNK2005: "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) already defined in libcpd.lib(delop.obj)
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endthreadex
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __beginthreadex
Debug/VisionMouse.exe : fatal error LNK1120: 2 unresolved externals

第三步：查找MSDN,发现

_beginthread <process.h> Win 95, Win NT
_beginthreadex <process.h> Win 95, Win NT

Libraries

LIBCMT.LIB Multithread static library, retail version
MSVCRT.LIB Import library for MSVCRT.DLL, retail version

第四步：在工程setting加入LIBCMT.LIB或者MSVCRT.LIB，(这两个的区别不清楚),再次链接。

错误如下:
nafxcwd.lib(afxmem.obj) : error LNK2005: "void * __cdecl operator new(unsigned int)" (??2@YAPAXI@Z) already defined in LIBCMT.LIB(new.obj)
nafxcwd.lib(afxmem.obj) : error LNK2005: "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) already defined in LIBCMT.LIB(delete.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __cinit already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: _exit already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __exit already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __cexit already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __c_exit already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __C_Exit_Done already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __C_Termination_Done already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __exitflag already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __wpgmptr already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __pgmptr already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: ___winitenv already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __wenviron already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: ___initenv already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __environ already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: ___wargv already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: ___argv already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: ___argc already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __winminor already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __winmajor already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __winver already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __osver already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(crt0dat.obj) : error LNK2005: __umaskval already defined in LIBCMT.LIB(crt0dat.obj)
libcd.lib(dbgheap.obj) : error LNK2005: _malloc already defined in LIBCMT.LIB(malloc.obj)
libcd.lib(dbgheap.obj) : error LNK2005: __nh_malloc already defined in LIBCMT.LIB(malloc.obj)
libcd.lib(dbgheap.obj) : error LNK2005: __heap_alloc already defined in LIBCMT.LIB(malloc.obj)
libcd.lib(dbgheap.obj) : error LNK2005: _calloc already defined in LIBCMT.LIB(calloc.obj)
libcd.lib(dbgheap.obj) : error LNK2005: _realloc already defined in LIBCMT.LIB(realloc.obj)
libcd.lib(dbgheap.obj) : error LNK2005: _free already defined in LIBCMT.LIB(free.obj)
libcd.lib(dbgheap.obj) : error LNK2005: __msize already defined in LIBCMT.LIB(msize.obj)
libcd.lib(sbheap.obj) : error LNK2005: __get_sbh_threshold already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: __set_sbh_threshold already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_heap_init already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_find_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_free_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_alloc_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_alloc_new_region already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_alloc_new_group already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_resize_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_heapmin already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___sbh_heap_check already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: __get_old_sbh_threshold already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: __set_old_sbh_threshold already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_new_region already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_release_region already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_decommit_pages already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_find_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_free_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_alloc_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_alloc_block_from_page already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_resize_block already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_heap_check already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_sbh_threshold already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(sbheap.obj) : error LNK2005: ___old_small_block_heap already defined in LIBCMT.LIB(sbheap.obj)
libcd.lib(cfout.obj) : error LNK2005: ___dtold already defined in LIBCMT.LIB(cfout.obj)
LINK : warning LNK4098: defaultlib "libcd.lib" conflicts with use of other libs; use /NODEFAULTLIB:library
Debug/VisionMouse.exe : fatal error LNK1169: one or more multiply defined symbols found
Error executing link.exe.

VisionMouse.exe - 57 error(s), 1 warning(s)

看起来libcd.lib与加入的LIBCMT.LIB有命名冲突，
我查看代码里有trackerThread = AfxBeginThread(StartTracker,_param,THREAD_PRIORITY_NORMAL);启用多线程的地方,是标准win32的用法.
请教一下为什么在vc.net -> vc6.0 移植中会有这样的错误？如何解决呢？

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