Problem with external matlab to VC++ 2008

Dear all,

I meet a problem that when I follow the tutorial about how to call matlab function in C. And I use VC++ 2008, I have already set

Additional Include Directories F:\MATLAB\R2009b\extern\include

Additional Library Directories F:\MATLAB\R2009b\extern\lib\win64\microsoft

Additional Dependencies libeng.lib libmx.lib libut.lib

But it still shows the linking error:

1>------ Build started: Project: matlab_test, Configuration: Debug Win32 ------

1>Compiling...

1>main.cpp

1>Linking...

1>main.obj : error LNK2019: unresolved external symbol _engClose referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _mxGetClassName referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _engGetVariable referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _engOutputBuffer referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _mxDestroyArray referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _engEvalString referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _engPutVariable referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _mxGetPr referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _mxCreateDoubleMatrix_730 referenced in function _main

1>main.obj : error LNK2019: unresolved external symbol _engOpen referenced in function _main

1>C:\Users\Administrator\Documents\Visual Studio 2008\Projects\matlab_test\Debug\matlab_test.exe : fatal error LNK1120: 10 unresolved externals

1>Build log was saved at "file://c:\Users\Administrator\Documents\Visual Studio 2008\Projects\matlab_test\matlab_test\Debug\BuildLog.htm"

1>matlab_test - 11 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Answer 1

[Kaustubha Govind]

It is possible that your Visual C++ project is configured to compile a 32-bit application (so it cannot recognize the 64-bit binaries libeng.lib, libmx.lib, etc.). See How to: Configure Visual C++ Projects to Target 64-Bit Platforms.

If this doesn't resolve the issue, you may be missing additional linker options. First try compiling the application using the MEX command and use the mex -v option to see the exact compiler/linker commands required in your Visual C++ project.

Answer 2

[Walter Roberson]

See http://www.mathworks.com/support/compilers/R2011a/win64.html

See also, http://www.mathworks.com/support/solutions/en/data/1-6IJJ3L/?solution=1-6IJJ3L

Answer 3

[Chirag Gupta]

You need to add an extra directory to the system PATH. I think you might need to add [matlabroot]\bin\win64|32