Try building Lua again
New experiment - NeXTSTEP/Darwin streams from https://www.opensource.apple.com/tarballs/Libstreams/Libstreams-22.tar.gz
Copy Makefiles from io
Merged MakeFile
Dummy mach/cthreads.h
Dummy objc/objc.h
Dummy objc/error.h
Notes on unavailable APIs