Help setting up a Mac/Linux GZDoom package for Steam

[Tabijaky2]

I've had a GZDoom mod/game/TC made for a while now and I'm looking for any possible way to get it set up standalone for the Mac/Linux (both)
for steam.

If anyone can help me with their Mac/Linux Computer and set up the mod to run with it, that'll be much appreciated.

https://www.moddb.com/mods/project-crypt

There is already a Mac version on DB, but it doesn't work.