no such file to load — readline

Question

I am getting the following error:

$script/console
Loading development environment (Rails 2.2.2)
/opt/ruby-enterprise-1.8.6-20080709/lib/ruby/1.8/irb/completi         


        

Answer 1

You need to install the ncurses and readline libraries.

On Ubunutu you could do

sudo apt-get install libreadline5-dev libncurses5-dev

and then you will have to recompile readline which comes with your ruby source

cd /ext/readline
ruby extconf.rb
make
sudo make install

If you are using RVM you could simply do

rvm package install readline

EDIT:

On newer RVM versions, this last command is

rvm pkg install readline