require 'formula' class Pngquant < Formula homepage 'http://pngquant.org/' url 'https://github.com/pornel/pngquant/archive/1.8.4.tar.gz' sha1 '66a0158a8e228fbec561d2236abddec5a3bc4649' head 'https://github.com/pornel/pngquant.git' depends_on :libpng def install ENV.append_to_cflags "-DNDEBUG" # Turn off debug system "make", "PREFIX=#{prefix}", "CC=#{ENV.cc}" bin.install 'pngquant' man1.install 'pngquant.1' end def test system "#{bin}/pngquant", "--help" end end