Installation of rmagick --version '>= 2.13.1' on CENTOS

I have successfully installed the following components in my centos server:

Ruby 1.8.7 Rails 2.3.8 Gem 1.3.7

paperclip --version '>= 2.3.3' will_paginate --version '>= 2.3.15' tlsmail --version '>= 0.0.1'

but facing problem at the time of installation of

rmagick --version '>= 2.13.1'

When I go for installation by using the " gem install rmagick -- version '>= 2.13.1' " command, I am getting the following error:

ERROR

I have successfully installed the following components in my centos server:

Ruby 1.8.7 Rails 2.3.8 Gem 1.3.7

paperclip --version '>= 2.3.3' will_paginate --version '>= 2.3.15' tlsmail --version '>= 0.0.1'

but facing problem at the time of installation of

rmagick --version '>= 2.13.1'

Looks like you don't have imagemagick installed

Fred