I see, thanks! Is cc installed by default? I remember when my ex-wife had a Mac she had to sign up for Apple's developer program to get compilers installed.
No idea what you get out of the box, or what /usr/bin/cc actually is and does, but it looks like the underlying compiler is the clang that came with Xcode, which I installed from the app store. I do have an Apple account, but I don't think it's signed up to Apple's developer program... at least, probably not? I'm not paying them for this, anyway.
