No such file or directory - /usr/local/lib/ruby/1.8/sparc-solaris2.10/readline.so (LoadError)

I am trying to run console on a Solaris server and I get this error:

-bash-3.00$ script/console Loading development environment (Rails 2.3.4) /usr/local/lib/ruby/1.8/sparc-solaris2.10/readline.so: ld.so.1: ruby: fatal: libedit.so.0: open failed: No such file or directory - /usr/ local/lib/ruby/1.8/sparc-solaris2.10/readline.so (LoadError)         from /usr/local/lib/ruby/1.8/irb/completion.rb:10         from /usr/local/lib/ruby/1.8/irb/init.rb:252:in `require'         from /usr/local/lib/ruby/1.8/irb/init.rb:252:in `load_modules'         from /usr/local/lib/ruby/1.8/irb/init.rb:250:in `each'         from /usr/local/lib/ruby/1.8/irb/init.rb:250:in `load_modules'         from /usr/local/lib/ruby/1.8/irb/init.rb:21:in `setup'         from /usr/local/lib/ruby/1.8/irb.rb:54:in `start'         from /usr/local/bin/irb:13 -bash-3.00$

Do you know how to solve this?