From: Timothy Hunter <TimHunter@...>
Date: 2007-03-26T22:17:47+09:00
Subject: Re: importing GEM libraries .... newby questions

cugf_0956 wrote:
> I have installed ruby on my laptop using rpm and I installed a whole
> bunch of packages using GEM. Now when I run any scripts on my laptop,
> ruby can locate any package that is installed via rpm but not the one
> installed via GEM. How can I make it work such that everything that is
> installed using Gem can be seen by ruby.
> Here is an example:
> I have
> /usr/lib/ruby/1.8/date
> I can call "require date" in my script and it will work.
>
> I have
> /usr/lib/ruby/gems/1.8/gems/Selenium-1.0.1/bin/selenium
>
> when I call "require selenium" it doesn't work.
> What is the catch here?
>
> Also, if I want to package my scripts to run on somebody else machine,
> how can I make it, if he/she has right packages installed, can run my
> scripts without errors?
>
> And one more question, I know that Perl can be pre-compiled for better
> performance, can ruby scripts be pre-compiled as well?
>
> Thanks a lot.
>
>   
You need to have RubyGems loaded before you require any libraries that 
were installed using RubyGems. You can do this:

export RUBYOPT=rubygems

or in every script that requires a gem, require 'rubygems' before 
requiring any gem.