Using Rubygems

• System install JRuby (use rvm if you must).
• Install the ruby-processing using the installed jruby (sudo prefix may be required on some systems)

jruby -S gem install ruby-processing # the jruby -S prefix may not always be required

• Install all the gems you want use with jruby or ruby-processing the same way

jruby -S gem install some_gem #some_gem is a remote rubygem, the jruby -S prefix may not always be required

When running the sketch use the local version of JRuby, to be sure that you can access the installed gems...

See samples/external_library/ruby_gem

An alternative way of using regular installed rubygems is to set the GEM_HOME environmental variable but this may not work..

Or allow rvm/rbenv bundler to sort it out for you?

Another alternative, that allows of the use jruby-complete with rubygems, is to use the rpbundle gem, but it has not been tested with recent versions of ruby-processing