Why is My Installation Failing Silently?

Ruby gem mysql2 Installation Error: Troubleshooting and Resolution

The installation of the mysql2 gem can encounter errors without specific messages. This article addresses the potential causes and provides solutions.

Problem:

When attempting to install the mysql2 gem, the process fails without apparent error messages.

Solution 1: Ubuntu Systems

On Ubuntu systems, the issue may arise due to missing MySQL development headers. To rectify this, execute the following commands:

• sudo apt-get install libmysqlclient-dev
• sudo gem install mysql2 -- --with-mysql-dir=/etc/mysql/

Solution 2: Missing MySQL Libraries

If you encounter issues with MySQL client libraries not being found, try the following steps:

1. Verify the installation of the MySQL development headers. On Debian-based systems, run sudo apt-get install libmysqlclient-dev.
2. Ensure that your gem installation command includes the --with-mysql-lib flag. For example: sudo gem install mysql2 -- --with-mysql-lib=/usr/local/mysql/lib
3. Specify the path to the MySQL library as an environment variable: export LDFLAGS="-L/usr/local/mysql/lib"

Additional Troubleshooting Tips:

• Check if you have multiple versions of Ruby installed. Uninstall any unused versions and ensure you are using the desired version.
• Verify that the Ruby development libraries are installed. On Debian-based systems, run sudo apt-get install ruby-dev.
• Inspect the ext/mysql2/gem_make.out file in the gem's directory for additional error messages.

The above is the detailed content of Why is My Installation Failing Silently?. For more information, please follow other related articles on the PHP Chinese website!