This is why I mention things like "surprisingly current toolchain for academia" :-) My personal philosophy is staying current costs far less in the end that falling behind and then needing a giant transition...

Then you'll love Mitch Bradley's CForth and OpenFirmware Forth, which he is always keeping current and up to date, including arm64 support! ;)

https://github.com/MitchBradley/cforth

https://github.com/MitchBradley/openfirmware

https://github.com/MitchBradley/openfirmware/tree/master/cpu...