Missing readline

Rails
1

I have installed Rails 2.2.2 on a Debian Lenny VPS and I am getting
the following error when trying to script/console.

Loading development environment (Rails 2.2.2)
/usr/local/lib/ruby/1.8/irb/completion.rb:10:in `require’: no such
file to load – readline (LoadError)

I have seen this error referred to in other posts but I am still
unsure how to install ‘readline’ on my system.

fyi, I have compiled Ruby 1.8.7 from source and installed the Rails
2.2.2 gem.

Thanks.

2

On Mar 18, 10:32 pm, Lee [email protected] wrote:

I have installed Rails 2.2.2 on a Debian Lenny VPS and I am getting
the following error when trying to script/console.

Loading development environment (Rails 2.2.2)
/usr/local/lib/ruby/1.8/irb/completion.rb:10:in `require’: no such
file to load – readline (LoadError)

It’s probably because you didn’t have the development headers for
readline. These are probably in a separate debian package (eg
libreadline-dev or something like that). Once you’ve got that try
building the readline extension again (cd to ruby source /ext/
readline, run ruby extconf.rb then the usual make && make install
dance)

Fred

3

Hi, you’ll need to install the readline library and you should send a
note to the Ruby package maintainer for your platform to add this
dependency.

Good luck,

-Conrad

Sent from my iPhone

4

Hi,

Thanks for your help guys.

script/console works!

For the benefit of others, I now have the following libaries
installed:

*libreadline-ruby1.8
libreadline5
readline-common
*libreadline5-dev
*libncurses5-dev (dependency of libreadline5-dev)

Those marked with * were not present when I experienced the error.

Having installed the missing libraries using the aptitude package
manager, I then did as suggested by Fred:

cd /ext/readline (in Ruby source tree)
ruby extconf.rb
make
make install