require 'formula' class Gcal < Formula url 'http://ftpmirror.gnu.org/gcal/gcal-3.6.1.tar.gz' homepage 'http://www.gnu.org/software/gcal/' md5 'a89e96db054a8b23ff6cd97049527a4f' def install system "./configure", "--prefix=#{prefix}" system "make install" end end