Thank you for this input, all of it makes perfect sense to me. I certainly understand that your company has no specific interest in making this port run (resp. build) on every platform (resp. in every development environment).
But I’m just thinking that when trying, I have probably been using a newer environment than the one your people used last time they built it. It just would help to know which one they used, and unfortunately that is not part of the documentation.
With this info, I could then go back in software time, get it built, start upgrading bits, and correct problems one step at a time. Maybe I could then try and maintain this port in the future, and let everyone enjoy an up-to-date version?