hey guys i still have a problem with my db drivers in metasploit

1.) my first step was to instally ruby.... -> done
2.) tried the instructions of sickness-> didn't help
3.) try an alternative sql driver with
PHP Code:
gem install ruby-mysql 
-> seems to work, says
Code:
gem install ruby-mysql
, but when i try
Code:
db_driver
->

Code:
No Active Driver[*]        Available: 
[*]     DB Support: Enable the sqlite3 driver with the following command:[*]                 $ gem install sqlite3-ruby
[-]     Note that sqlite is not supported due to numerous issues.
[-]     It may work, but don't count on it
[*]     DB Support: Enable the mysql driver with the following command:[*]                 $ gem install mysql[*]     This gem requires mysqlclient headers, which can be installed on Ubuntu with:[*]                 $ sudo apt-get install libmysqlclient-dev
[*]     DB Support: Enable the postgresql driver with the following command:[*]                   * This requires libpq-dev and a build environment[*]                 $ gem install postgres[*]                 $ gem install pg # is an alternative that may work
4.) i installed the libmysqlclient-dev and the other needed packages, but still does not function.

5.) i try again to install mysql

Code:
sudo gem install mysql


No definition for next_result

No definition for field_name

No definition for field_table

No definition for field_def

No definition for field_type

No definition for field_length

No definition for field_max_length

No definition for field_flags

No definition for field_decimals

No definition for time_inspect

No definition for time_to_s

No definition for time_get_year

No definition for time_get_month

No definition for time_get_day

No definition for time_get_hour

No definition for time_get_minute

No definition for time_get_second

No definition for time_get_neg

No definition for time_get_second_part

No definition for time_set_year

No definition for time_set_month

No definition for time_set_day

No definition for time_set_hour

No definition for time_set_minute

No definition for time_set_second

No definition for time_set_neg

No definition for time_set_second_part

No definition for time_equal

No definition for error_errno

No definition for error_sqlstate

No definition for next_result

No definition for field_name

No definition for field_table

No definition for field_def

No definition for field_type

No definition for field_length

No definition for field_max_length

No definition for field_flags

No definition for field_decimals

No definition for time_inspect

No definition for time_to_s

No definition for time_get_year

No definition for time_get_month

No definition for time_get_day

No definition for time_get_hour

No definition for time_get_minute

No definition for time_get_second

No definition for time_get_neg

No definition for time_get_second_part

No definition for time_set_year

No definition for time_set_month

No definition for time_set_day

No definition for time_set_hour

No definition for time_set_minute

No definition for time_set_second

No definition for time_set_neg

No definition for time_set_second_part

No definition for time_equal

No definition for error_errno

No definition for error_sqlstate
Building native extensions.  This could take a while...
Successfully installed mysql-2.8.1
so meanwhile i don't know what to do, can someone help me?

would be nice...