Just to try it out, I took one of my old C projects written in 2010, last code update in 2012. It's a machine learning utility to train maximum entropy rankers. I was a bit worried because it used CMake (rather than a vanilla Makefile). It configured and built without any issues (and super-fast).

How many external dependencies/libraries does it use? Ie remote dependencies not stored on your machine?

How complex is the project? I know ML utilities like that can be as simple as 50-100 lines.