require 'formula' class Gcal < Formula url 'http://ftp.gnu.org/gnu/gcal/gcal-3.6.tar.gz' homepage 'http://www.gnu.org/software/gcal/' md5 '9c3819ca118d6e3adb6a716858cba7d6' def install system "./configure", "--prefix=#{prefix}" system "make install" end end