require 'formula' class CAres < Formula url 'http://c-ares.haxx.se/download/c-ares-1.7.5.tar.gz' homepage 'http://c-ares.haxx.se/' md5 '800875fc23cd8e1924d8af9172ed33e7' def install system "./configure", "--prefix=#{prefix}" system "make install" end end