Can't use mex function in Macbook with MATLAB R2018b

I tried to use the mex function in MATLAB R2018b. But it failed and showed like below:

Building with 'Xcode with Clang'.
Error using mex
xcodebuild: error: SDK "macosx10.15.4" cannot be located.
xcrun: error: sh -c
'/Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -sdk
macosx10.15.4 -find clang 2> /dev/null' failed with exit code 16384: (null)
(errno=No such file or directory)
xcrun: error: unable to find utility "clang", not a developer tool or in PATH

It seems that the problem is happned in Xcode. Because I can run these two code.

mex -setup C++
mex -setup C

Thank you so much for your help!!!

Answer 1

[drummer]

I think you're supposed to compile your mex files for macOS so you get mexmaci64 files.

Check here to see if that's the problem you're facing.

Also, your Xcode is up-to-date?

Cheers.