How to compile mex files using gcc and makefiles

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Bene Wilde il 2 Mag 2016

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https://it.mathworks.com/matlabcentral/answers/282103-how-to-compile-mex-files-using-gcc-and-makefiles

Risposto: Dave Behera il 3 Mag 2016

I want to compile C++ code to mex files with gcc using makefiles. Which options do I have to pass to the compiler for the compiled file to work with Matlab?

How do I choose between "-largeArrayDims" and "-compatibleArrayDims"?

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Walter Roberson il 2 Mag 2016

The only reason to use compatibleArrayDims now is if you are stuck using a pretty old release or you are stuck having to interface a 32 bit program that you cannot update.

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Answer 1

Dave Behera il 3 Mag 2016

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https://it.mathworks.com/matlabcentral/answers/282103-how-to-compile-mex-files-using-gcc-and-makefiles#answer_220656

According to the documentation at

http://www.mathworks.com/help/matlab/ref/mex.html?refresh=true#btw193f-1

-compatibleArrayDims — Uses the MATLAB Version 7.2 array-handling API, which limits arrays to 2^31-1 elements. Default option. -largeArrayDims — Uses the MATLAB large-array-handling API. This API handles arrays with more than 2^31-1 elements. Must use this option when calling LAPACK or BLAS functions.