> There's a GNAT for for PowerMacs.

Tenon says it can be used with 68K Macs, too.

>... hosted on MachTen CodeBuilder,
> a full Unix that runs as a Mac app alongside MacOS.

Diff between CodeBuilder and the full MachTen is the interfacing parts
that make rlogin, ftp, nfs, etc. possible (of course a lot of that
is available for Mac separately).

> It comes with the full suite of GNU software, including GNAT and all the
> other GNU languages, and also a good deal of NextOS-type code.

And Tenon says that the source for the Mach Unix kernel is also included.

> This is an endorsement, but not an ad. I don;t have a formal relationship
> with Tenon; >

Same here.