Installing Ruby from source on OSX

I've become a die-hard Ruby fan in the past few months. I'm currently
using 1.8.5 on my work PC and want to upgrade on my mac at
home, which
is currently running 1.8.2. It seems the neither Fink nor Darwinports
has 1.8.5 available so I'd like to install from source, but
I've never
done this before.

Can anyone offer help (like step by step) to a total newbie when it
comes to installing from source?

I'm on a Windows box and writing from memory, so forgive me if the
following fails:
1) Install MacOS X Developer Tools CD
2) Open a terminal window
sudo bash
(enter your root password here)
cd /usr/local/src
curl -O
tar xzf ruby-1.8.5.tar.gz
cd ruby-1.8.5
make && make install
^D (logout)


From: Drew Olson