How to Fix the 'Failed to Build Gem Native Extension' Error During MySQL2 Installation?

Fixing the Error "Failed to Build Gem Native Extension" for MySQL2 Installation

When attempting to install the MySQL2 gem for Rails, you may encounter an error stating "Error installing mysql2: ERROR: Failed to build gem native extension." To resolve this issue and successfully install MySQL2, follow these steps:

For Ubuntu/Debian:

Run the following command to install the necessary dependencies:

sudo apt-get install libmysql-ruby libmysqlclient-dev

If libmysql-ruby cannot be found:

Install the libmysqlclient-dev package instead:

sudo apt-get install libmysqlclient-dev

For Red Hat/CentOS:

Install mysql-devel:

sudo yum install mysql-devel

For Mac OS X with Homebrew:

Install MySQL using Homebrew:

brew install mysql

By installing the appropriate dependencies for your operating system, you should now be able to successfully install the MySQL2 gem.

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