This is an attempt to get a working 3DO toolchain using modern tools. This is still reusing the original 3DO libraries but other than that, it's all modern.
Note that i was unable to use newlib as it makes use of ARMv4 instructions at minimum.
./setup.sh --install-deps
make
You can build examples like visual or games
make rainblow
make visual
This is a huge mess. Unless you don't want to use the 3dodev toolchain and need something that can run on x86-64, i would suggest you don't use this unless your project is very simple and you absolutely want the newer GCC 8.5 features. However the toolchain as is, is very barebones.
optidoom just flatout crashes. Rainblow, a homebrew game that i made, at least works fine but that game is C-only + using 3DO libraries, which is the best way for it to perform.