http://i.nfectio.us/articles/tag/osx en-us 40 "Nothing in life is worth doing if you have no life while doing it" While installing all the pre-requisites for running Rails on my new Mac Pro, I ran across a problem with either the mysql gem or mysql 5.0.24 where it depends on 'ulong' being defined by the OS include files. On OS X it isn't, and this causes the ruby mysql gem to fail compilation which causes Rails to (possibly) throw a Lost Connection to MySQL Server during query error due to the fact that the built-in Ruby driver doesn't work with mysql 4.1+ authentication (edge rails fixes this limitation with the built-in mysql driver). A quick fix for this is to edit the ruby gem mysql.c and add the #define for a ulong so the gem can properly compile. <pre> #define ulong unsigned long </pre> <br /><br /> Tue, 12 Sep 2006 11:27:00 -0700 urn:uuid:1ba473b6-32fc-4723-8fae-e1f45ebed18b Bob Silva http://i.nfectio.us/articles/2006/09/12/running-rails-on-os-x-with-mysql-5-0-24 Ruby on Rails rails mysql apple osx