Can't compile OpenFace using MacOS 13.3 SDK (XCode 14.3.1)

[Derek Van Tonder]

Hi OpenFace team, it's an amazing piece of software. I am currently forced to use it on Windows however as I can't compile OpenFace on macOS 👎

With the latest version of XCode, I get this compiler error:

[ 2%] Building CXX object lib/local/LandmarkDetector/CMakeFiles/LandmarkDetector.dir/src/CCNF_patch_expert.cpp.o
In file included from /Users/dvt/Downloads/openFace/OpenFace/lib/local/LandmarkDetector/src/CCNF_patch_expert.cpp:35:
In file included from /Users/dvt/Downloads/openFace/OpenFace/lib/local/LandmarkDetector/include/stdafx.h:19:
In file included from /opt/homebrew/Cellar/opencv/4.7.0_4/include/opencv4/opencv2/core/core.hpp:48:
In file included from /opt/homebrew/Cellar/opencv/4.7.0_4/include/opencv4/opencv2/core.hpp:52:
In file included from /opt/homebrew/Cellar/opencv/4.7.0_4/include/opencv4/opencv2/core/cvdef.h:185:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/limits:107:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/type_traits:421:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/__functional/invoke.h:15:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/__type_traits/apply_cv.h:16:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/__type_traits/remove_reference.h:13:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/c++/v1/cstddef:50:9: error: no member named 'nullptr_t' in the global namespace
using ::nullptr_t;
~~^

Other sites suggest that this is caused by the new MacOS 13.3 SDK.