编译错误error LNK2019: unresolved external symbol,求解

[pomoq]

今天编译一个工程,其中的一个mediastream工程(用vs2008以debug方式编译)总是编译不过去,该工程依赖DirectShow的BaseClasses.

我用vs6.0以debug方式编译了BaseClasses.然后把下面的三个路径
D:\Program Files\DXSDK\Include
D:\Program Files\DXSDK\Samples\C++\DirectShow\BaseClasses
D:\Program Files\DXSDK\Samples\C++\DirectShow\BaseClasses\Debug (strmbasd.lib路径)
分别添加到了mediastream对应的属性页中.

但编译mediastream时出现输出下面的错误
1>Generating Code...
1>Linking...
1>alaw.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/OPT:ICF' specification
1> Creating library D:\Source\Source\SipPhoneWorkspace\Debug\mediastreamer2.lib and object D:\Source\Source\SipPhoneWorkspace\Debug\mediastreamer2.exp
1>dxfilter.obj : error LNK2019: unresolved external symbol "public: __thiscall CTransInPlaceFilter::CTransInPlaceFilter(wchar_t *,struct IUnknown *,struct _GUID const &,long *,bool)" (??0CTransInPlaceFilter@@QAE@PA_WPAUIUnknown@@ABU_GUID@@PAJ_N@Z) referenced in function "public: __thiscall CDXFilter::CDXFilter(struct IUnknown *,long *,int)" (??0CDXFilter@@QAE@PAUIUnknown@@PAJH@Z)
1>dxfilter.obj : error LNK2001: unresolved external symbol "public: virtual long __stdcall CTransformFilter::FindPin(wchar_t const *,struct IPin * *)" (?FindPin@CTransformFilter@@UAGJPB_WPAPAUIPin@@@Z)
1>dxfilter.obj : error LNK2001: unresolved external symbol "public: virtual long __stdcall CBaseFilter::JoinFilterGraph(struct IFilterGraph *,wchar_t const *)" (?JoinFilterGraph@CBaseFilter@@UAGJPAUIFilterGraph@@PB_W@Z)
1>dxfilter.obj : error LNK2001: unresolved external symbol "public: virtual long __stdcall CBaseFilter::QueryVendorInfo(wchar_t * *)" (?QueryVendorInfo@CBaseFilter@@UAGJPAPA_W@Z)
1>dxfilter.obj : error LNK2019: unresolved external symbol "void __stdcall DbgBreakPoint(wchar_t const *,wchar_t const *,int)" (?DbgBreakPoint@@YGXPB_W0H@Z) referenced in function "public: virtual long __thiscall CTransInPlaceFilter::GetMediaType(int,class CMediaType *)" (?GetMediaType@CTransInPlaceFilter@@UAEJHPAVCMediaType@@@Z)
1>dxfilter.obj : error LNK2019: unresolved external symbol "public: __thiscall CTransInPlaceInputPin::CTransInPlaceInputPin(wchar_t *,class CTransInPlaceFilter *,long *,wchar_t const *)" (??0CTransInPlaceInputPin@@QAE@PA_WPAVCTransInPlaceFilter@@PAJPB_W@Z) referenced in function "public: __thiscall CDXFilterInPin::CDXFilterInPin(class CTransInPlaceFilter *,long *)" (??0CDXFilterInPin@@QAE@PAVCTransInPlaceFilter@@PAJ@Z)
1>dxfilter.obj : error LNK2019: unresolved external symbol "void __stdcall DbgAssert(wchar_t const *,wchar_t const *,int)" (?DbgAssert@@YGXPB_W0H@Z) referenced in function "public: struct tagAM_SAMPLE2_PROPERTIES * __thiscall CBaseInputPin::SampleProps(void)" (?SampleProps@CBaseInputPin@@QAEPAUtagAM_SAMPLE2_PROPERTIES@@XZ)
1>dxfilter.obj : error LNK2019: unresolved external symbol "public: __thiscall CMemAllocator::CMemAllocator(wchar_t *,struct IUnknown *,long *)" (??0CMemAllocator@@QAE@PA_WPAUIUnknown@@PAJ@Z) referenced in function "public: __thiscall CDXFilterAllocator::CDXFilterAllocator(class CDXFilterInPin *,long *)" (??0CDXFilterAllocator@@QAE@PAVCDXFilterInPin@@PAJ@Z)
1>dxfilter.obj : error LNK2019: unresolved external symbol "public: __thiscall CMediaSample::CMediaSample(wchar_t *,class CBaseAllocator *,long *,unsigned char *,long)" (??0CMediaSample@@QAE@PA_WPAVCBaseAllocator@@PAJPAEJ@Z) referenced in function "public: virtual long __thiscall CDXFilterAllocator::Alloc(void)" (?Alloc@CDXFilterAllocator@@UAEJXZ)
1>D:\Source\Source\SipPhoneWorkspace\Debug\mediastreamer2.dll : fatal error LNK1120: 9 unresolved externals
1>Build log was saved at "file://d:\Source\Source\Common\mediastreamer2\build\wince\Debug\BuildLog.htm"
1>mediastreamer2 - 10 error(s), 4 warning(s)
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========


请各位大侠支招!!!

[jackinsea]

ding

[skyjsq]

诡异的问题，偶也遇到了

[airry]

把BaseClasses重新编译一次，注意编译的设置要和你使用它的工程一致，比如是否采用静态的MFC库等。

[myth518]

看看什么问题

[newencn]

解决方法：在cpp文件Include后添加 #pragma comment(lib,"ws2_32.lib")

#include “***”

#pragma comment(lib,"ws2_32.lib")

[driverSir]

额弄一星期了，也没搞定，系统函数一直说没有，崩溃。

[HateMath]

对我来说，是用这种方式搞定的：
built the base classes with MBCS you must build the example in the same way.
(Configuration Properties->General->Character Set)

不知对你有没有用

[wencan2010]

我正遇到這個問題啊

[startstartsvip]

[Quote=引用 18 楼 hatemath 的回复:]
对我来说，是用这种方式搞定的：
built the base classes with MBCS you must build the example in the same way.
(Configuration Properties->General->Character Set)

不知对你有没有用
[/Quote]

正解

[darkeye0]

[Quote=引用 18 楼 hatemath 的回复:]

对我来说，是用这种方式搞定的：
built the base classes with MBCS you must build the example in the same way.
(Configuration Properties->General->Character Set)

不知对你有没有用
[/Quote]

同意这个

[wbf402]

为什么还要我回复才能看

[delta_2013]

18楼牛啊, 我的问题也是这样,编译时,解决了:)

[theseahd]

正解！！！！！

[q200824960]

[Quote=引用 6 楼 plutus_lee 的回复:]

TMD，都是些鸟人回答，不会就是不会，不要讲些垃圾，让人恶心，猥琐。
[/Quote]


我是路人，但我从见过你这么没素质的鸟人。。。 TMD。

[wxi_hello]

我也遇到了这种错误，O(∩_∩)O谢谢。我是不小心把工程中某个文件删除了，把该添加的文件加到工程里面就可以了。

[pop1210]

[Quote=引用 25 楼 q200824960 的回复:]

引用 6 楼 plutus_lee 的回复:

TMD，都是些鸟人回答，不会就是不会，不要讲些垃圾，让人恶心，猥琐。



我是路人，但我从见过你这么没素质的鸟人。。。 TMD。
[/Quote]

大家都好有爱啊 - -

[shitagain]

[Quote=引用 6 楼 的回复:]

TMD，都是些鸟人回答，不会就是不会，不要讲些垃圾，让人恶心，猥琐。
[/Quote]

U are Right！

[fjhsdm]

没解决问题，郁闷

[powerzone]

各人的情况不一样，我的也是Link2019，但错误就不一样了

[xiao_qian_2013]

我也遇到这样问题了，不过，我后来发现是我自己定义的几个工具类忘记加入工程了啊~


由此觉得可能是调用库出了问题。可以重新编译一下库，或者直接加入源码，试一试。