Also, there is a mac folder (grmac.c) inside of the graph.
As I tested, it is not in use in my machine. Apps are working fine without it.
Should remain it?
The mac/ folder contains legacy macos 7-9 support. It is untested and
probably broken.
I suggest that you create a new subfolder cocoa/, for example. BTW, it
does not have to support `make`.
Whatever works natively. Given that the main src/ programs are pure C,
it is more important that your implementations of
gr_cocoa_device_init(), gr_cocoa_surface_init() are compatible with C
and can be compiled. Perhaps, Objective-C is all you need.
Alexei