# Installation C-based MySQL library

**URL:** <https://www.ruby-forum.com/t/installation-c-based-mysql-library/126575>\
**Category:** Rails\
**Created:** [January 19, 2008, 7:49pm UTC](https://www.ruby-forum.com/t/installation-c-based-mysql-library/126575 "2008-01-19T19:49:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jbauer888](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7ba0ec/32.png) [@jbauer888](https://www.ruby-forum.com/u/jbauer888)\
**Post date:** [January 19, 2008, 7:49pm UTC](https://www.ruby-forum.com/t/installation-c-based-mysql-library/126575/1 "2008-01-19T19:49:44Z")

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Hi all,

have a newbee-to-rails-question.

I followed the instructions to install the C-based MySQL library in  
database.yml for Windows.

- I installed a win32 build of th driver with “gem install mysql”
- The /bin directory of my MySQL-Server is in my path

But the driver don’t work. In the development.log I always get the  
message:

WARNING: You’re using the Ruby-based MySQL library that ships with  
Rails. This library is not suited for production. Please install the C-  
based MySQL library instead (gem install mysql).

What is going wrong?

My system:

- Win XP
- Rails 2.0.2
- MySQL 5.0.41

Thank a lot for help.

Josef