Ruby 1.9.2 and Rails 3 cannot open rails console

Question

[gkaykck@main myApplication]$ rails console
/usr/local/lib/ruby/1.9.1/irb/completion.rb:9:in `require\': no such file to load -- readline (LoadError)
    from /usr/l         


        

Answer 1

If you're using RVM you can re-make readline. This fixed the issue for me. Instructions here:

no such file to load -- readline (Load Error)

Answer 2

use rvm remove to remove all ruby installed. do a "which ruby" if you still get something, you need to reinstall rvm then install ruby using rvm.

Answer 3

Recipe for those who use rvm:

rvm pkg install readline
rvm remove 1.9.3
rvm install 1.9.3 --with-readline-dir=$rvm_path/usr

In more details about it on https://rvm.io/packages/readline/

Answer 4

If you want another solution to this problem do this.

sudo apt-get install libreadline6

Then in your gem file add:

gem 'rb-readline'

Then

bundle install

And you should be all set.

Answer 5

Solution is to go to the source folder you compiled ruby => ext => readline than

ruby extconf.rb
make
sudo make install

Answer 6

Apparently ubuntu and ruby don't always catch dependencies like they should.

From the first google hit (yeah, I clicked on this stack-overflow in place #2 before checking out the first result.)

Navigate to the Ruby source and enter:

sudo apt-get install libreadline5-dev
cd ext/readline
ruby extconf.rb
make
sudo make install

So, if you're on another distro, make sure you install readline somehow (source/package), then run make/install on extconf from the source. I tried what gkaykck suggested of course but got this without readline already on my system.

$ ruby extconf.rb
checking for tgetnum() in -lncurses... no
checking for tgetnum() in -ltermcap... no
checking for tgetnum() in -lcurses... no
checking for readline/readline.h... no
checking for editline/readline.h... no