Created attachment 32298 [details] build_log There seems to be a race condition in the `make install` stage of apr's compile, but you have to deparallelize the whole build to resolve it. Merely deparallelizing the `make install` stage isn't enough. Seems to affect OS X 10.8-10.10, and possibly earlier, but I don't have access to anything earlier than 10.8. Build log attached.