[cy384]

if you want to go period-appropriate, you can run Macintosh Programmer's Workshop or CodeWarrior natively

I use retro68 on linux, which is a modern GCC toolchain, so it's just like developing any other C/C++ (well, without some nice debugging tools, and with the added complexity of the mac OS resource stuff)

https://github.com/autc04/Retro68/