Changing line endings isn't a "fix"... if you do that, it's unusable on the intended system upon which you would work on this code - System 7 or Mac OS 8.
This might be a dumb question (I spend most of my days in Ruby), why can't this compile with gcc and make? It's all just C (and a few files C++) right?
The fix that needs to be made here is in Git, which fails to process line endings in a sane way (and includes a bunch of insane, poorly documented config options that approach the problem completely sideways).