The Ruby on Rails website recommends installing Ruby from source under Linux. I encountered a number of C library problems building ruby from source on a clean install of Ub
Did you install libzlib-ruby? Here's my typical Ubuntu initialization before installing Rubygems:
libzlib-ruby
$ apt-get update $ apt-get dist-upgrade $ apt-get install build-essential -y $ apt-get install rsync -y $ apt-get install ruby ri rdoc irb ri1.8 ruby1.8-dev libzlib-ruby zlib1g libopenssl-ruby -y