require 'formula' class Xvid < Formula url 'http://downloads.xvid.org/downloads/xvidcore-1.3.2.tar.gz' homepage 'http://www.xvid.org' md5 '87c8cf7b69ebed93c2d82ea5709d098a' def install cd 'build/generic' do system "./configure", "--disable-assembly", "--prefix=#{prefix}" system "make" ENV.j1 # Or install sometimes fails system "make install" end end end