How to Fix 'Error installing mysql2: Failed to build gem native extension' in Ruby?

Resolving "Error installing mysql2: Failed to build gem native extension" Issue in Ruby

Installing the mysql2 gem for Rails can be a hassle at times, leading to the infamous "Error installing mysql2: ERROR: Failed to build gem native extension" error. To rectify this issue, follow the steps outlined below:

Ubuntu/Debian

For distributions utilizing aptitude, execute the following command:

sudo apt-get install libmysql-ruby libmysqlclient-dev

Note that libmysql-ruby is being replaced by ruby-mysql, as per the solution found online. If the previous command fails due to libmysql-ruby's absence, try this alternative:

sudo apt-get install libmysqlclient-dev

Red Hat/CentOS

For systems utilizing yum, run the following command:

sudo yum install mysql-devel

Mac OS X

If you're working on macOS with Homebrew, execute this command:

brew install mysql

After following the appropriate steps, you should be able to successfully install mysql2 and proceed with your Ruby on Rails endeavors.

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