Building non-inlined S-function with .c file present alongside the .cpp is causing Simulink (with Matlab R2015a) to use the .c file in the build process for the model even though the actual .mexw64 file was generated for C++.

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Anon 2016-9-16

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https://ww2.mathworks.cn/matlabcentral/answers/303251-building-non-inlined-s-function-with-c-file-present-alongside-the-cpp-is-causing-simulink-with-ma

评论： Jordan Ross 2016-9-23

I had built a .cpp S-function with mex. After generating the code for the model, the built .exe kept crashing. So after some digging, I went into the debugger and noticed it is calling a non-existent mdlStart() in the .exe. There was a mdlStart() in my .cpp file, but the dummy .c file which was also present didn't have it and it was the .c file for some reason that was compiled during the build process, even though the .mexw64 file I had generated was for the .cpp file. Is this a bug?