Probably needs similar undefines on Linux and macOS.
Notice that the signatures of `SDL_CreateThread` and `SDL_CreateThreadWithStackSize`
have changed.
The bindings don't yet compile. There are errors in SDL_pixels.g.cs, SDL_stdinc.g.cs and SDL_thread.g.cs,
a bunch of warnings about "Function like macro definition records are not supported",
and a few "Info: Potential missing remapping".
Built on SDL commit:
6ad390fc50