which OS are you using? anyway if you are using ubuntu, from this https://github.com/brianmario/mysql2/issues/8 run: <pre class="prettyprint"><code>sudo apt-get install mysql-client libmysqlclient-dev </code></pre> <hr> Otherwise for Mac users,(use brew to install) check this http://mxcl.github.com/homebrew/, or run: <pre class="prettyprint"><code>brew install mysql </code></pre> then <pre class="prettyprint"><code>sudo gem install mysql2 </code></pre> <hr> and for windows users check the link below for a solution. Error installing mysql2: Failed to build gem native extension I would recommend to use the normal command prompt.

ERROR: Failed to build gem native extension - Error installing mysql2

which OS are you using?

anyway if you are using ubuntu, from this https://github.com/brianmario/mysql2/issues/8 run:

sudo apt-get install mysql-client libmysqlclient-dev

Otherwise for Mac users,(use brew to install) check this http://mxcl.github.com/homebrew/, or run:

brew install mysql

then

sudo gem install mysql2

and for windows users check the link below for a solution. Error installing mysql2: Failed to build gem native extension

I would recommend to use the normal command prompt.

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