SDK_Invert_ProcAmp_Kernel.i missing

Hi !

I'm trying to compile the SDK_Invert_ProcAmp example project in Xcode 13.1, MacOS 12.1

I am getting this error. I have installed the boost libraries (and added to custom path), so I don't think that's the issue.

Is it weird that it states OpenCL when I am on a Mac, shouldn't it be Metal ?

IOError: [Errno 2] No such file or directory: '/Users/gabgren/Library/Developer/Xcode/DerivedData/SDK_Invert_ProcAmp-ealeyjnywzqqmbendfjbspljlief/Build/Intermediates.noindex/SDK_Invert_ProcAmp.build/Debug/SDK_Invert_ProcAmp.build/DerivedSources/64/PreprocessedOpenCL/SDK_Invert_ProcAmp_Kernel.i'

Command RuleScriptExecution failed with a nonzero exit code