Courtesy of kognate over on github, we have a 2.19.1 minor point release of bsdgames-osx. It seems that something changed between the version of clang I have installed and the one he has installed, so he added stdbool.h to mille and made a few other changes to get it to compile. These changes get it compiling happily with Apple LLVM version 5.0. You can see more on the pull request’s discussion.
There is an updated homebrew formula as well, if you’re interested.
On another note, I think this is the first time someone’s submitted a pull request to one of my git repos. It’s kind of a weird feeling.