error LNK2019: unresolved external symbol in Matlab code compilation

Question

Laxminarayan 2014-10-24

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https://ww2.mathworks.cn/matlabcentral/answers/159913-error-lnk2019-unresolved-external-symbol-in-matlab-code-compilation

回答： Sandip Kumar 2014-10-28

ErrorLog.txt

Hi I am using matlab 2013a 32 bit to generate code of simulink models and VS2010 compiler. I am getting error for unresolved external interfaces. Please see the attached error log file for more details. Thanks a lot

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Answer 1

Sandip Kumar 2014-10-28

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https://ww2.mathworks.cn/matlabcentral/answers/159913-error-lnk2019-unresolved-external-symbol-in-matlab-code-compilation#answer_156922

This looks like a custom made BAT file, which is compiling and building the generated code. Correct me if wrong?

The symbols are getting re-defined in another OBJ file. I would start with

Remove the OBJ files and recompile
Re-generate the code and then try the compilation.
Use "packngo" to have all the relevant files brought together by Simulink directly. Please refer to the following documentation:

http://www.mathworks.com/help/releases/R2013a/rtw/ug/program-builds.html#btm64e7-1

http://www.mathworks.com/help/releases/R2013a/rtw/ref/packngo.html

Thanks, Sandip