require 'formula' class GnuUnits < Formula url 'http://ftp.gnu.org/gnu/units/units-1.88.tar.gz' homepage 'http://www.gnu.org/software/units/' md5 '9b2ee6e7e0e9c62741944cf33fc8a656' def options [['--default-names', "Do NOT prepend 'g' to the binary; will override system utils."]] end def install args = ["--prefix=#{prefix}"] args << "--program-prefix=g" unless ARGV.include? '--default-names' system "./configure", *args system "make install" end end