使用ruby 1.8.7 Mac OSX 10.6安装mysql2 gem

Question

I am currently trying to install the mysql2 gem, under Ruby 1.8.7 and Mac 10.6.6 and mysql 64 bits, so I can use Rails 3 and mysql together.

When I do the command:

sudo gem install mysql2

I get:

Building native extensions.  This could take a while...
Successfully installed mysql2-0.2.6
1 gem installed
Installing ri documentation for mysql2-0.2.6...
Enclosing class/module 'mMysql2' for class Client not known
Enclosing class/module 'mMysql2' for class Result not known
Installing RDoc documentation for mysql2-0.2.6...
Enclosing class/module 'mMysql2' for class Client not known
Enclosing class/module 'mMysql2' for class Result not known

I did a lot of things recommended for this problem here on SO, but nothing seemed to help.

Has anyone got a idea about what to do next?

Edit: When I try do to rake db:migrate, it says: http://pastebin.com/tuPwQmqL . I can't do rails server either.

Edit 2: Managed to do it, thanks!

Answer 1

This is just a warning that the documentation for a module is empty. It shouldn't cause any problems.

If you are able to your commands like "rake db:migrate" etc. Everything is fine :)

Update: http://freddyandersen.wordpress.com/2010/10/03/mysql-5-5-snow-leopard-and-rails /. This link should solve your problem. I faced the same problem on my other mac :)

Answer 2

If you're using Rails 3, you should definitely be using Bundler and not doing sudo gem install anything. Add mysql2 to your Gemfile and just run bundle . That should install without any errors and let you run rake commands.