Installation
For compiling, simply use the --with-mysql[=DIR] configuration option where the optional [DIR] points to the MariaDB installation directory.
Although this MariaDB extension is compatible with MariaDB 4.1.0 and greater, it doesn't support the extra functionality that these versions provide. For that, use the MySQLi extension.
If you would like to install the mysql extension along with the mysqli extension you have to use the same client library to avoid any conflicts.