require 'formula' class Gifsicle < Formula homepage 'http://www.lcdf.org/gifsicle/' url 'http://www.lcdf.org/gifsicle/gifsicle-1.64.tar.gz' md5 'dabe9ee0d6d9cea099d9a7e6ecdcc443' def install ENV.x11 system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}", "--enable-all" system "make install" end end