s.extensions << 'ext/sasl/extconf.rb'
Now you can just include "qpid" in your client code without having to get sasl on the path.
This is one of thoses cases where github would be good, I don't know the best way to push this change back to whoever manages this code. There was a github branch of this code (colinsurprenant-qpid) but it is over a year out of date and doesn't even run against the current 0-10 version of qpid. It's too bad because he had addressed the strange way the amqp protocol xml spec files were handled and stored. I may have too look at repatching in those changes and adding the protocol files to the gem.