Compiling PHP with PDO-mysql

To install pdo-mysql with PHP, following are the steps:

1) configure PHP with '--enable-pdo=shared --with-pdo-mysql=shared' options.
2) compile and install PHP (make, make install)
3) Add 'extension = pdo.so' and 'extension = pdo_mysql.so' in the php.ini after pointing the extension_dir variable to the appropriate location where these 'so' reside. (eg. extension_dir = /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613)