require 'formula' class CAres < Formula url 'http://c-ares.haxx.se/c-ares-1.7.4.tar.gz' homepage 'http://c-ares.haxx.se/' md5 'dd71e8f07d9f3c837e12a5416d1b7f73' def install system "./configure", "--prefix=#{prefix}" system "make install" end end