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Asked: 2026-05-22T22:25:03+00:00

I try to install the mysql2 gem on Windows 7 32-bit. I run: gem

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I try to install the mysql2 gem on Windows 7 32-bit.

I run:

gem install mysql2

and I get the following error:

ERROR:  Error installing mysql2:
        The 'mysql2' native gem requires installed build tools.

Please update your PATH to include build tools or download the DevKit
from 'http://rubyinstaller.org/downloads' and follow the instructions
at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit'

Any ideas what could cause this error, and how to solve this ?

UPDATE

I did everything as described here, but I can’t figure out the last step:

gem install mysql2 -- 
     '--with-mysql-lib="c:\Program Files\MySQL\MySQL Server 5.1\lib\opt" 
      --with-mysql-include="c:\Program Files\MySQL\MySQL Server 5.1\include"'

I understand that I should change the paths to the correct paths in my system, but I can’t find the lib\opt and the include directories in my WAMP MySQL installation. I use WAMP 2.1.

Please advise.

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1 Answer

  1. Editorial Team

    Try XAMPP from apachefriends.org, be sure to download the full version and you will find “lib”, “bin”, “include” and other MySQL directories. For further details, refer to –

    http://rorguide.blogspot.com/2011/03/installing-mysql2-gem-on-ruby-192-and.html

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