CoreAudio not detected (OS X 10.11.4)

[martinweiss]

I am having a strange issue, where the CoreAudio option is greyed out when i run compile_playrec.m on a machine running OS X 10.11.4 and MATLAB 2016a.

If anyone has an idea for a solution I'd be happy to hear about it.

[et2345]

I ran into the same problem on OS X 10.11.6 with MATLAB 2015b. It looks like the problem is that ismac does not show up as a builtin, so the line exist('ismac','builtin') in is_os.m returns a 0. Changing this line to exist('ismac','file') fixes the problem.