undefined symbol: __pure_virtual

While trying to install mysql dbd module for ruby I encountered the following error:

/usr/local/ruby/lib/ruby/site_ruby/1.8/i686-linux/mysql.so: /usr/local/ruby/lib/                                           ruby/site_ruby/1.8/i686-linux/mysql.so: undefined symbol: __pure_virtual - /usr/                                           local/ruby/lib/ruby/site_ruby/1.8/i686-linux/mysql.so (LoadError)        from ruby-db-client.rb:4

After some googling I found this is a problem with mysql 5.0.22. I was able to fix it by modyfing /usr/local/mysql/bin/mysql_config and adding -lgcc to the libs argument.

After reinstalling ruby everything worked fine.