require 'formula' class Gifsicle < Formula url 'http://www.lcdf.org/gifsicle/gifsicle-1.61.tar.gz' homepage 'http://www.lcdf.org/gifsicle/' md5 '3d9e45873daaf960a35d1b89505f1101' def install system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}", "--enable-all" system "make install" end end