# Error installing using rubygem

**URL:** <https://www.ruby-forum.com/t/error-installing-using-rubygem/127501>\
**Category:** Ruby\
**Created:** [January 29, 2008, 9:33pm UTC](https://www.ruby-forum.com/t/error-installing-using-rubygem/127501 "2008-01-29T21:33:29Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Sanjay\_P](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/b2d939/32.png) [@Sanjay\_P](https://www.ruby-forum.com/u/Sanjay_P)\
**Post date:** [January 29, 2008, 9:33pm UTC](https://www.ruby-forum.com/t/error-installing-using-rubygem/127501/1 "2008-01-29T21:33:29Z")

</div>

I am doing a fresh install. I have installed

OS Redhat Enterprise

Ruby 1.8.6 (from Source)

rubygems versions 1.0.1 (from Source)

when I run the following to install rails:

gem install rails --include-dependencies

I get the following error:

[root@localhost rubygems-1.0.1]# gem install rails --include-  
dependencies  
/usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require': no such file to load -- zlib (LoadError) from /usr/local/lib/ruby/site_ruby/1.8/rubygems/ custom_require.rb:27:in`require’  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/package.rb:10  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/  
custom\_require.rb:27:in `gem_original_require' from /usr/local/lib/ruby/site_ruby/1.8/rubygems/ custom_require.rb:27:in`require’  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/format.rb:9  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/  
custom\_require.rb:27:in `gem_original_require' from /usr/local/lib/ruby/site_ruby/1.8/rubygems/ custom_require.rb:27:in`require’  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/installer.rb:  
11  
… 11 levels…  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/  
command\_manager.rb:103:in `process_args' from /usr/local/lib/ruby/site_ruby/1.8/rubygems/ command_manager.rb:74:in`run’  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems/gem\_runner.rb:  
39:in `run’  
from /usr/local/bin/gem:22

I have searched google up and down but cannot find a answer. Any help  
will be appreciated.  
-SKP

---

<div class="post-metadata">

**Author:** ![Sanjay\_P](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/b2d939/32.png) [@Sanjay\_P](https://www.ruby-forum.com/u/Sanjay_P)\
**Post date:** [January 30, 2008, 1:46pm UTC](https://www.ruby-forum.com/t/error-installing-using-rubygem/127501/2 "2008-01-30T13:46:20Z")

</div>

On Jan 29, 9:32 pm, Sanjay P. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
> `gem\_original\_require’: no such file to load – zlib (LoadError)

First hit:  
[http://www.google.com/search?q=no%20such%20file%20to%20load%20--%20zlib](http://www.google.com/search?q=no%20such%20file%20to%20load%20--%20zlib)

As the error says, you don’t have zlib module for ruby. I guess that  
you didn’t have the development files for zlib installed when you  
compiled ruby and the module was therefore simply not compiled and  
installed. Same goes with other extensionssuch as readline, openssl,  
etc.