Hi Zhurui,
I was also facing a similar error message when compiling my model.
After thoroughly reviewing the documentation, I found the following links helpful in debugging my model and resolving the issue.
- Debug C MEX S-Functions: https://www.mathworks.com/help/simulink/sfg/debugging-c-mex-s-functions.html
- Manage Simulation Targets for Referenced Models: https://www.mathworks.com/help/simulink/ug/model-reference-simulation-targets-1.html
- C MEX S-Function Examples: https://www.mathworks.com/help/simulink/sfg/c-mex-s-function-examples.html
The explanation and examples here provided clear guidance for step-by-step troubleshooting to pinpoint the exact cause.
You may go through the following MathWorks documentation links to learn more about using MEX Functions:
- Simulink Engine Interaction with C S-Functions: https://www.mathworks.com/help/simulink/sfg/how-the-simulink-engine-interacts-with-c-s-functions.html
- Available S-Function Implementations: https://www.mathworks.com/help/simulink/sfg/available-s-function-implementations.html
- Accelerate MATLAB Algorithm by Generating MEX Function: https://www.mathworks.com/help/coder/gs/generating-mex-functions-from-matlab-code-at-the-command-line.html
- Workflow for Accelerating MATLAB Algorithms: https://www.mathworks.com/help/coder/ug/workflow-for-accelerating-matlab-algorithms.html
Also, the following are some helpful resources you can refer to for accelerating your simulation:
- Best Practices for Using MEX Functions to Accelerate MATLAB Algorithm: https://www.mathworks.com/help/coder/ug/best-practices-for-using-mex-functions-to-accelerate-matlab-algorithms.html
- Share Simulink Cache Files for Faster Simulation: https://www.mathworks.com/help/simulink/ug/reuse-simulation-builds-for-faster-simulations.html
- Reduce Update Time for Referenced Models by Using Parallel Builds: https://www.mathworks.com/help/simulink/ug/referenced-model-parallel-builds.html
I hope this helps.
