Installed Rails 3.2.3 and MySQL 5.6 fine on my OSX 10.7.3
I created a new project called "simple_cms" and then, in the terminal, tried to launch webrick with "rails server" and got nothing.
Hideyoshis-MacBook-Pro:simple_CMS gregpfeffer$ rails s
/Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.18.dylib (LoadError)
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle
Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle
from /Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2.rb:9
from /Library/Ruby/Gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:inrequire'
from /Library/Ruby/Gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:inrequire'
from /Library/Ruby/Gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:inrequire'
from /Library/Ruby/Gems/1.8/gems/bundler-1.1.3/lib/bundler.rb:119:in require'
from /Users/gregpfeffer/Sites/simple_cms/config/application.rb:7
from /Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/commands.rb:53:inrequire'
from /Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/commands.rb:53
from /Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/commands.rb:50:in tap'
from /Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/commands.rb:50
from script/rails:6:inrequire'
from script/rails:6
Hideyoshis-MacBook-Pro:simple_CMS gregpfeffer$ sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql/lib/libmysqlclient.16.dylib /Library/Ruby/Gems/1.8/gems/mysql2-0.2.4/lib/mysql2/mysql2.bundle
install_name_tool: can't open file: /Library/Ruby/Gems/1.8/gems/mysql2-0.2.4/lib/mysql2/mysql2.bundle (No such file or directory)