How to enable SQLite Support on CloudFoundry (PHP Buildpack)

I'm building an application on IBM Bluemix using CloudFoundry. I managed to deploy php-buildpack. How can I enable also SQLite Support? ...I'm not even sure if sqlite is included in the buildpack as there is only "pdo_sqlite" listed as an extension.

If I can't get sqlite support out of this buildpack, is there any other way how to have sqlite support?

Thanks for any help..

Andrej