require 'formula' class Pngquant < Formula homepage 'http://pngquant.org/' url 'https://github.com/pornel/improved-pngquant/tarball/1.8.1' sha1 'c29e14e9d554b0906259bb2f51954661cf336084' head 'https://github.com/pornel/improved-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