Anyone with any familiarity with this PC/UNIX based cross development system from the early 1990's? The PC version ran on Win 3.1

It seems to have been quite popular back in the day, but very little in the way of electronic documentation or information seems to exist on the interwebs.

I'm trying to translate some older makefiles and decode some linker options. Any one out there with any experience, familiarity or documentation for this?