rod mclaughlin

Ruby Version Manager (RVM) Rocks (10 nov 10)

RVM

http://rvm.beginrescueend.com/

It rocks

Suppose you run 'irb' (interactive Ruby console) under ruby 1.8.7 with gems for Rails 3.0.3

IRB whines about something called 'readline' which is missing, and 'rails console' doesn't even run

See http://rvm.beginrescueend.com/packages/readline/

It says to do this

're-compile your ruby with readline support after obtaining the readline libraries'

rvm package install readline
rvm remove 1.8.7
rvm install 1.8.7 --with-readline-dir=$rvm_path/usr

No luck - but I found this at http://cjohansen.no/en/ruby/ruby_version_manager_ubuntu_and_openssl

sudo apt-get install libreadline5-dev
cd ~/.rvm/src/ruby-1.8.7-p302/ext/readline
ruby extconf.rb
make && make install

That did it - 'irb' and 'rails console' worked

Portland

London