From: G Brandon Hoyt <qrprat77@...>
Date: 2010-10-15T07:35:20+09:00
Subject: Re: 1.9.2 irb and readline problem on ubuntu


> installed ubuntu's libreadline5-dev.

If you didn't have the libreadline5-dev installed on your system before,
that is what your problem was.
See my blog post: http://bit.ly/9SyPuM  for other tips about installing
ruby from source on Ubuntu.  Those instructions also work for 10.10.