Homebrew Formula for ODE with Drawstuff

ode.rb

require 'formula'

class Ode < Formula
    homepage 'http://www.ode.org/'
    url 'http://sourceforge.net/projects/opende/files/ODE/0.12/ode-0.12.tar.bz2'
    sha1 '10e7aae6cc6b1afe523ed52e76afd5e06461ea93'
    head 'http://opende.svn.sourceforge.net/svnroot/opende/trunk'
    
    depends_on 'pkg-config' => :build
    depends_on 'gnu-sed' => :build
    
    if ARGV.build_head?
        # Requires newer automake and libtool
        depends_on 'automake' => :build
        depends_on 'libtool' => :build
    end

    def options
        [
            ["--enable-double-precision", "Configure ODE to work with double precision"],
            ["--enable-libccd", "Enable all libccd colliders (except box-cylinder)"],
            ["--with-drawstuff", "Build and install Drawstuff"]
        ]
    end

    def install
        args = []
        args << "--enable-double-precision" if ARGV.include? "--enable-double-precision"
        args << "--enable-libccd" if ARGV.include? "--enable-libccd"
    
        if ARGV.build_head?
            ENV['LIBTOOLIZE'] = 'glibtoolize'
            inreplace 'autogen.sh', 'libtoolize', '$LIBTOOLIZE'
            system "./autogen.sh"
        end
        system "./configure", "--prefix=#{prefix}", *args
        system "make"
        system "make install"
        if(ARGV.include?("--with-drawstuff"))
            system "curl -O https://raw.github.com/gist/3225621/install_drawstuff.sh"
            system "chmod a+x install_drawstuff.sh"
            system "./install_drawstuff.sh"
        end
    end
end

Please check this repository, https://github.com/yuya-oc/homebrew-formula .
It's more useful.