# File lib/mini_portile.rb, line 78
  def configured?
    configure = File.join(work_path, 'configure')
    makefile  = File.join(work_path, 'Makefile')
    md5_file  = File.join(tmp_path, 'configure.md5')

    stored_md5  = File.exist?(md5_file) ? File.read(md5_file) : ""
    current_md5 = Digest::MD5.hexdigest(computed_options)

    (current_md5 == stored_md5) && newer?(makefile, configure)
  end