gistfile1.rbx

package 'openssl', :type => :make do
  default 'source'

  version 'source' do
    download 'http://...'
    
    # hooks
    before :download { }
    after :download { }
    after :extract { }
    after :configure { }
    before :compile { } # make
    after :compile { } # make
    after :install { } # make install
  end

  version '1.8.99' do
    # ...
  end
end

## command line:
# rake openssl
# rake openssl[1.8.99]
# rake openssl[source]
#