From: wincent.com@...
Date: 2007-03-13T21:25:18+09:00
Subject: Re: Ruby 1.8.6 has been released

Congratulations on the release!

I also had some minor problems while upgrading from 1.8.5 to 1.8.6 on
Mac OS X.

I made some notes here explaining the problems and how to work around
them:

http://wincent.com/knowledge-base/Building_and_installing_Ruby_1.8.6_on_Mac_OS_X_Tiger

As far as I know none of this is the result of bugs in Ruby itself;
rather it seems to be peculiarities of Mac OS X and of my own setup.
The key configure options required are:

--with-readline-dir=/usr/local --enable-pthread

And in my case I also had to take care of a bad RUBYLIB environment
variable that was getting set in my bash_profile.

Cheers,
Wincent