That’s why we decided to release Xcode 13.3.1 under an "experimental" label for a few weeks.
Still, given the nature and diversity of projects built using Unity Cloud Build, we prefer to release XCode 13.3.1 under the experimental label for a few weeks before setting the majority of the users to use this version automatically. We’ve been working hard to support version 13.3.1 of XCode for the past months. We understand that having the latest XCode version is critical to your success. You should now be able to compile using the mex function.We sincerely apologize for the unexpected delay in launching XCode 13.3.1 due to several unforeseen issues. (4) Finally, save your edited mexopts.sh file and run the following in the Matlab command window: mex -setupĬhoose your file (press 1 probably) and choose yes (). For the C++ section just below you'll probably need CXX='llvm-g++-4.2' If you're using Xcode, the SDKROOT should probably be '/Developer/SDKs/MacOSX10.7.sdk'. You'll need to set the following items (these are from Matlab R2012b and have changed slightly since, but I'm guessing you're using an older version): CC='llvm-gcc-4.2' You'll need to edit the file based on your system and the complier included with the Command Line Tools (you can try getting the versions by running cc -v and c++ -v or similar in Terminal.app). Make a copy of the file that opens in case you screw up. Type the following in your Matlab command window: edit() You'll need to do this if you have Xcode or not.
Then you'll need to (3) edit your mexopts.sh file. You can then (2) go to the downloads page at and get just the Command Line Tools download for your version of OS X (the last to these for 10.7 was in March 2013 – it's on the third page of downloads currently). You will need (1) an Apple Developer account (free for students). You don't actually need to install all of Xcode if you don't want to, I believe.
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