Very cool! I really regret not having a mac build. Can you please put the changes on git hub?
Yeah, here's the repo! https://github.com/japhib/impact_7drl_mac
If you look at the commits, the "initial commit" is the source as it initially was, just after downloading (just the src folder). Then the next commit "Fix build for Mac" has all my changes. Mostly just changing a few #includes and then adding a CMake build script.