require 'formula' class Zopfli < Formula homepage 'https://code.google.com/p/zopfli/' url 'https://zopfli.googlecode.com/files/zopfli-1.0.0.zip' sha1 '98ea00216e296bf3a13e241d7bc69490042ea7ce' head 'https://code.google.com/p/zopfli/', :using => :git def install # Makefile hardcodes gcc inreplace 'Makefile', 'gcc', ENV.cc system 'make' bin.install 'zopfli' end test do system "#{bin}/zopfli" end end