!!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql.
rake aborted!
no such file to load -- mysql

development:
  adapter: mysql
  database: dbname
  username: dbuser
  password: dbpw
  socket: /Applications/XAMPP/xamppfiles/var/mysql/mysql.sock

ERROR:  Error installing mysql:
  ERROR: Failed to build gem native extension.

sudo env ARCHFLAGS="-arch i386" gem install mysql -- --with-mysql-dir=/Applications/XAMPP/xamppfiles/lib/mysql --with-mysql-lib=/Applications/XAMPP/xamppfiles/lib/mysql/ --with-mysql-include=/Applications/XAMPP/xamppfiles/include/mysql/

development:
  adapter: mysql2
  encoding: utf8
  database: your_db
  pool: 5
  username: root
  password:
  socket: /Applications/XAMPP/xamppfiles/var/mysql/mysql.sock