[Rubycocoa-talk] Missing --enabled-shared option from install

[Pete N. <pe...@me...>]

 From http://rubycocoa.sourceforge.net/GettingStarted:

If you decided to built Ruby by yourself and not using the version  
Apple provides, make sure you compiled it as a shared library, passing  
the --enabled-shared option to theconfigure script. By default this  
option is not activated.

But:

$ ruby install.rb config --enable-shared
config: unknown option --enable-shared
try 'ruby install.rb --help' for usage

Still:

$ ruby install.rb config --prefix=/opt/local
$ ruby install.rb setup
$ sudo ruby install.rb install
$ irb
irb(main):001:0> require 'osx/cocoa'
=> true

(OS X 10.6.1, Ruby 1.8.7 from MacPorts)

I think the documentation needs updating, but I'm not sure if I'm  
missing something.