> > I still maintain that we should just use `xcrun` to actually _run_ Clang. I think it'll set up a lot of shit for us.
>
> I can have a look, but I don't really want to mess with the makefile's configure scripts for these libs. I'd rather leave that for when we turn them into Xcode projects.

I don't understand what Makefiles have to do with this. We're already setting `CC` — we can set that to an `xcrun` command instead of the `clang` path.