Ubuntu rails install fails on zlib

user_53788 0
Viewed 66457

I've just moved over to Ubuntu 8.10 as my dev box; it's my first serious foray into Linux as a daily-use OS, and I'm having a hard time getting Rails going. I have followed a number of tutorials which all seem to work fine, but when I try and use gem install or gem update on anything, I get an error that looks like this:

/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- zlib (LoadError)
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:1
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/commands/update_command.rb:5
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:167:in `load_and_instantiate'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:88:in `[]'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:144:in `find_command'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:131:in `process_args'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:102:in `run'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:58:in `run'
from /usr/local/bin/gem:21

I have (as recommended in the tutorials) installed zlib, zlib1g, and zlib1g-dev. I've even found a few tutorials on this particular problem (all for flavors other than mine, however) but they didn't help.

I'm on Ubuntu 8.10, ruby version 1.8.8dev gem version 1.3.2

I've tried reinstalling ruby and gems each and separately, to no avail.

ubuntu-8.10 rubygems zlib ruby-on-rails ruby
13 Answers

Just goto Ruby Source Package , Unzip it.

Goto /your-ruby-dir/ext/zlib

ruby extconf.rb
make
sudo make install

If the packages are missing it will tell you, mainly libzlib related packages

Regards

Saurabh

user_2810850

yes, and that didn't do the job either. Got this from another source, this finally did it for me where the other stuff failed.

wget http://www.blue.sky.or.jp/atelier/ruby/ruby-zlib-0.6.0.tar.gz
tar xvzf ruby-zlib-0.6.0.tar.gz
cd ruby-zlib-0.6.0
ruby extconf.rb && make
sudo make install

Reinstall ruby gems from source

Thanks anyway, guys.

user_537880

The problem is that Ruby on Ubuntu isn't built against zlib; you'll want to do a source build to install Ruby. You can do this with apt-get source -b ruby

Don_Werve_852870

Did you try apt-get install libzlib-ruby?

Also install rubygems from rubyforge. I don't like the rubygems package in Ubuntu.

nkassis_720300

You could try to download the ruby enterprise deb package on the phusion site. And install passenger through the package. Follow the instructions here. Or you could try the bash script found here.

user_873050

When running Rails I would not recommend using Ruby 1.8.8dev. Stick with 1.8.6, preferably the Ruby Enterprise Edition. See this post on RailsLab what other people are using.

If you insist on going hi-tech, install Ruby 1.9.1.

But in both cases build it yourself or use Marans suggestion.

user_714440
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