The extrinsic function 'dir' is not available for standalone code generation. It must be eliminated for stand-alone code to be generated. It could not be eliminated because its outputs appear to influence the calling function. Fix this error by not u

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Jiahao He 2021-3-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/775422-the-extrinsic-function-dir-is-not-available-for-standalone-code-generation-it-must-be-eliminated

评论： Mohammad Larijani 2023-5-24

I am using MATLAB Coder. When I generate my code MATLAB to c code, I get this problem.

The extrinsic function 'dir' is not available for standalone code generation. It must be eliminated for stand-alone code to be generated. It could not be eliminated because its outputs appear to influence the calling function. Fix this error by not using 'dir' or by ensuring that its outputs are unused.

Is there other function that I can use to lists the files in a folder?

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Answer 1

Darshan Ramakant Bhat 2021-3-17

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https://ww2.mathworks.cn/matlabcentral/answers/775422-the-extrinsic-function-dir-is-not-available-for-standalone-code-generation-it-must-be-eliminated#answer_650302

The function 'dir' is not supported for codegeneration. Below is the list of functions supported for codegen :

https://www.mathworks.com/help/coder/ug/functions-and-objects-supported-for-cc-code-generation.html

If you are using coder.extrinsic() on this function, it will not work for standalone codegeneration. The coder.extrinsci() needs MATLAB execution engine to evalute it. You can read the full description with examples in the below doc :

https://www.mathworks.com/help/simulink/slref/coder.extrinsic.html