Running Rails on OS X with MySQL 5.0.24 24

Posted by Bob Silva Tue, 12 Sep 2006 18:27:00 GMT

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. 
#define ulong unsigned long