+ <flag name='pdo-oci'>Enable the Oracle PDO driver</flag>
+ <flag name='pdo-odbc'>Enable the ODBC PDO driver</flag>
+ <flag name='pdo-mysql'>Enable the MySQL PDO driver</flag>
+ <flag name='pdo-pgsql'>Enable the PostgreSQL PDO driver</flag>
+ <flag name='pdo-sqlite'>Enable the SQLite PDO driver</flag>