Not able to use MINGW compiler for C++

Hi, I am trying to run this example file (https://de.mathworks.com/help/coder/ug/generate-cpp-classes-for-matlab-classes-that-model-simple-and-damped-oscillators.html) on my PC with Matlab 2021b and I get the following error message even though I have installed the MinGW C/C++ compiler. I have tried to resolve this but was not successful. Please help me.

[Ji Lee]

What was the command that you executed to elicit that error? That error seems to indicate that you were directly calling the "mex" function whereas the MATLAB Coder example you mentioned utilizes the "codegen" function that comes with MATLAB Coder. If that example errors, what does it say?

[Gagan Dabole]

Hi, thank you for your answer. The problem was on my side. C++ compiler was not correctly installed on my PC. I uninstalled Visual Studio and installed the compilers again. It worked! Thanks again.

Answer 1

[David Fink]

As Gagan figured out, the Visual Studio compiler was not correctly installed, and uninstalling + reinstalling it allowed MATLAB to find it.

For reference, here is the page describing how to change MATLAB's default compiler:

https://www.mathworks.com/help/matlab/matlab_external/changing-default-compiler.html