From: Joel VanderWerf <joelvanderwerf@...>
Date: 2010-06-11T03:57:38+09:00
Subject: Re: How to Display ./configure options from compiled Ruby?

Ken Stailey wrote:
> Hi,
> 
> With perl you can run "perl -V" to see the configuration options.
> 
> Is there an equivalent for Ruby?  I'd like to build a Ruby binary using
> the same options as one that I have already.

This seems to work for me (ruby 1.8.7):

$ ruby -r rbconfig -e 'puts Config::CONFIG["configure_args"]'
  '--enable-pthread' 'CC=gcc-4.4'