MacOS Compile Instructions 02/2024

[bennm37]

To get this to compile on an Apple Silicon running MacOS (Sonoma 14.3) with maca64 Matlab, I had to do the following:

• Change all instances of MEX= mex to MEX=/Applications/MATLAB_R20XX/bin/mex
• Configure mex to have a real gcc compiler option.

Note on mac by default gcc (/usr/bin/gcc) is a symlink to clang. You'll need to install gcc from homebrew (or macports etc). gcc-11 worked for me
brew install gcc@11
Type gcc-11 into terminal to check that this has installed properly.
To configure mex to use this compiler, you'll then need to add an xml file to /Applications/MATLAB_R20XX/bin/maca64/mexopts which specifies which version of gcc and the architecture. Examples for intel macs can be found here (https://github.com/danfortunato/matlab-gcc).
I cobbled this one together from the intel examples and the clang_maca64.xml that MATLAB uses by default. It worked for me but I'm not an expert in C compiler flags etc by any means so there may be some nonsensical things in there.
gcc_maca64.xml.txt
(.txt added so could upload to markdown, remove this)
With this in place, run
mex -setup c
and choose the gcc option you added.
Now try the typical install instructions.

make mwrap
make mex-matlab 
make test-mex-matlab

Good luck!