I have looked for the value of 'kAudioUnitProperty_ShouldAllocateBuffer' and it should be 51 as far as i know, compiling over here goes much further now (had the same error).
Anyways, in the file
Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp
On line 91 replace 'kAudioUnitProperty_ShouldAllocateBuffer' with 51 (thats what i did, and it got much further, actualy it is still compiling with no critical errors)
5 minutes of compiling later, I do get some errors, but dont think it has to do with this. So i'll be looking further.
Anyways, in the file
Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp
On line 91 replace 'kAudioUnitProperty_ShouldAllocateBuffer' with 51 (thats what i did, and it got much further, actualy it is still compiling with no critical errors)
5 minutes of compiling later, I do get some errors, but dont think it has to do with this. So i'll be looking further.