https://macintoshgarden.org/apps/sdl2-macos-9-rough-draft

Very very rough port to classic MacOS, but tests work. Despite the current name (which I'll be changing), also runs on M68k 7.6.

I created a video driver (which also handles events, only Command Q for now). Basic drawing works, but ALL other drivers are dummy.

Debug output in stderr.txt.

Whoah! This is fantastic! This unlocks SOO many possibilities.

FYI I discuss my progress over at system7today in their forums...
https://system7today.com/forums/index.php?topic=3950.15

Updates:
Enough key and mouse events now for really basic games.
Have switched primarily to Retro68 from Codewarrior and loving it.
Split stuff only CodeWarrior needs just for it.
All tests build, but, of course, many still fail due to missing drivers.
Created skeleton audio and joystick drivers, will be trying to move over parts of SDL 1.2 drivers.
timer and loadso drivers from SDL 1.2 converted, but need testing.
Now have SDL_main() based on SDL 1.2's, needs testing.
Uses resources from SDL 1.2 since they were good enough.
Refined SDL_config_macosclassic.h, everything possible now included.
OpenGL support and renderer now building, but nothing in driver but stubs so far.
Fixed lots of memory and cleanup issues/bugs.
Did basic what was needed and created simple video driver for m68k Amiga and it works.
Tons of cleaning and refining.

Now have SDL2_image, SDL2_mixer, SDL2_ttf and SDL2_gfx.
SDL2_image and SDL2_mixer aren't using ANY external libraries yet, as I haven't built them, so file formats limited.