From: Walton Hoops <walton@...>
Date: 2009-12-09T01:31:34+09:00
Subject: Re: Install ruby 1.9.1

> -----Original Message-----
> From: Ruby Freak [mailto:twscannell@gmail.com]
> I spent an hour trying to find reasonable instructions on how to
> install ruby 1.9.1 as a standalone ruby instance. Everything seems to
> be directed at side-by-side 1.8/1.9 installation.
> 
> I found this in some ad swamp, but it was sadly more appropriate than
> anything else I could find on the web that wasn't apt-get ruby.(1.8.7)
> 
> ruby 1.9.1 is installed in opt/ruby but the system doesn't know about
> it.
> opt/ruby/bin/ruby -v works, but ruby -v tells me ruby isn't installed.
> 
> I guess I need to put ruby in the path or create a symlink or
> something, but I am not sure what to do.
> 
> Thanks in advance.
> 
> Here is what I did:
> 
> 1: Download ruby 1.9.1, ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-
> 1.9.1-p0.tar.gz
> ( I actually got p243 at ftp://ftp.ruby-lang.org/pub/ruby/1.9/ruby-
> 1.9.1-p243.tar.gz)
> 
> 2: To ensure that the installation of the necessary tools
> sudo apt-get install build-essential
> sudo apt-get install autoconf
> 
> 3:
> tar xzvf ruby-1.9.1-p0.tar.gz
> cd ruby-1.9.1-p0(actually p243)
> autoconf
> sudo makedir /opt/ruby
> ./configure --prefix=/opt/ruby --enable-pthread
> make
> sudo make install
> 
> 4 Installed?
> /opt/ruby/bin/ruby -v
> 

Why the special configure options? On my Ubuntu system I simply did

./configure
make
sudo make install

Done!  Everything works properly.

Hope that helps.