require 'formula' class Pngrewrite < Formula url 'http://entropymine.com/jason/pngrewrite/pngrewrite-1.3.0.zip' homepage 'http://entropymine.com/jason/pngrewrite/' md5 '37216932d12bf9b47dca1f45724080d6' def install ENV.libpng system "#{ENV.cc} #{ENV.cflags} #{ENV.cppflags} -o pngrewrite pngrewrite.c #{ENV.ldflags} -lpng" bin.install 'pngrewrite' end end