I'm still arguing with make trying to get Odin compiled on my Mac Ventura.
It appears that the header files are now in a different directory. But, I still get scads of warnings and errors, if I put the following in my .zshrc ...
export PATH="/usr/local/opt/llvm@11/bin:$PATH"
export CPPFLAGS="-I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -Wnullability-completeness"
export CFLAGS="-I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -Wnullability-completeness"
export CXXFLAGS="-I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -Wnullability-completeness"
export LDFLAGS="-L/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib"