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Compile Error ( MEX could not find the library )
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on 16 Dec 2013
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i'm using matlab 2013a x64 and win7 x64 . install the opencv path (C:\opencv)Compile Error :&& mex -LC:\opencv\build\x64\vc11\lib -IC:\opencv\build\include\opencv -lcv -lcxcore me_HaarDetectOpenCV.cpp
Warning: MEX could not find the library "cv" specified with -l option.
MEX looked for a file with one of the names:
MEX looked for the library in the following directories:
D:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\LIB\amd64
D:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\ATLMFC\LIB\amd64
C:\Program Files (x86)\Windows Kits\8.0\lib\win8\um\x64
D:\Program Files\MATLAB\R2013a\extern\lib\win64
D:\Program Files\MATLAB\R2013a\extern\lib\win64\microsoft
C:\opencv\build\x64\vc11\lib
Warning: MEX could not find the library "cxcore" specified with -l option.
MEX looked for a file with one of the names:
cxcore.lib
libcxcore.lib
MEX looked for the library in the following directories:
D:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\LIB\amd64
D:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\ATLMFC\LIB\amd64
C:\Program Files (x86)\Windows Kits\8.0\lib\win8\um\x64
D:\Program Files\MATLAB\R2013a\extern\lib\win64
D:\Program Files\MATLAB\R2013a\extern\lib\win64\microsoft
C:\opencv\build\x64\vc11\lib
Creating library C:\Users\AsUs\AppData\Local\Temp\mex_47j5SQ\templib.x and object C:\Users\AsUs\AppData\Local\Temp\mex_47j5SQ\templib.exp
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvCreateImage referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvReleaseImage referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvCreateMemStorage referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvReleaseMemStorage referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvGetSeqElem referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvLoad referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvEqualizeHist referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvReleaseHaarClassifierCascade referenced in function mexFunction
me_HaarDetectOpenCV.obj : error LNK2019: unresolved external symbol cvHaarDetectObjects referenced in function mexFunction
me_HaarDetectOpenCV.mexw64 : fatal error LNK1120: 9 unresolved externals
D:\PROGRA~2\MATLAB\R2013A\BIN\MEX.PL: Error: Link of 'me_HaarDetectOpenCV.mexw64' failed. Error using mex (line 206)
Unable to complete successfully.
how fix error and compile (created me_HaarDetectOpenCV.mexw64)??
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i'm using code to the created the MEX file (me_HaarDetectOpenCV.mexw64)mex -largeArrayDims -I'C:\opencv\build\include' -L'C:\opencv\build\x64\vc11\lib\realese'
-lopencv_core247 -lopencv_imgproc247 -lopencv_objdetect247 me_HaarDetectOpenCV.cpp
7,557 accepted answers
Reputation: 39,254
7,557 accepted answers
Reputation: 39,254
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7,557 accepted answers
Reputation: 39,254
You do not have the cv library that it needs to link against, or else you have the library in a different directory.Perhaps you downloaded opencv but did not tell it to compile itself.
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(简体中文)使用matlab进行mex编译时的路径问题mexopts_Linux编程_Linux公社-Linux系统门户网站
你好，游客
使用matlab进行mex编译时的路径问题mexopts
来源：Linux社区&
作者：FocusYang55
matlab和vs 进行混合编程时总需要使用matlab编译mexFunction.cpp文件。这些文件免不了使用include下的*.h和lib下的*.lib文件。举例说明，这次我的cpp中用到了opencv/cv.h。在matlab\bin\win64\mexopts文件夹下有一个msvsopts100.bat的批处理文件。
用notepad 将这个文件打开在&include=& 和 &lib=& 后面添加需要使用的路径并加分号&;&
设置好之后保存。然后在matlab 中 输入mex mexFunction.cpp。但是还是会出现 cannot open file &opencv/cv.h&。这是为什么呢？
仔细观察发现mscvopts100.bat 中第6行中有这样一句话rem C++keyName: Microsoft Visual C++ 2010。这句话证明mscvopts100.bat ，在mex -setup的过程中修改过。因此可以猜测需要再次进行mex -setup 才能使这些路径生效。经过试验，确实如此。困扰了我两周。希望能给大家省时间。
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