Activesupport - coś nie tak

Witam
mam mianowicie taki problem:

linux-kjsc:/srv/www/htdocs/rails # gem install activesupport
Successfully installed activesupport-2.3.8
1 gem installed
Installing ri documentation for activesupport-2.3.8…
Installing RDoc documentation for activesupport-2.3.8…
linux-kjsc:/srv/www/htdocs/rails # rails test
/usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:636:in report_activate_error': Could not find RubyGem activerecord (= 2.3.8) (Gem::LoadError) from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:141:inactivate’
from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:165:in activate' from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:164:ineach’
from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:164:in activate' from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:49:ingem’
from /usr/bin/rails:18

Could not find RubyGem activerecord (= 2.3.8) (Gem::LoadError)

Brakuje Ci gemu activerecord (coś zupełnie innego niż activesupport).

gem install activerecord

Powinno pomóc. A najlepiej po prostu:

gem install rails

Teraz jeszcze gorzej :

linux-kjsc:/srv/www/htdocs/rails # gem install rails
ERROR: Loading command: install (LoadError)
no such file to load – zlib
ERROR: While executing gem … (NameError)
uninitialized constant Gem::Commands::InstallCommand

W Twoim systemie najwyraźniej brakuje bindingu dla Rugiego dla Zlib. Sprawdź czy jest zainstalowane np. zlib-devel albo coś w ten deseń.

Może też brakować libzlib-ruby.