Homebrew/homebrew — pull request #28761 by lhagan (2014-04-27 17:48:07+00:00)
Title: mkvtoolnix: fix for nonstandard homebrew prefix

My prefix isn't `/usr/local` and I'm pretty sure that's why `configure` was failing to find `libogg` on my system. Adding `LDFLAGS` and `CPPFLAGS` solved it.