Working with database on mobile device

I made some test a while ago and tried to communicate with Mysql database from my Windows Mobile device. I found out that there was no plugin for Mysql on Windows Mobile device to do that. So I was a litte disappointed.

I'm trying to retry that with Qt SDK 1.1 beta. But it does not have to be Windows Mobile, it can also be Symbian- or Maemo-powered mobile device. When I try to build application that creates QSqlDatabase object, linker returns errors "undefined reference..." to database-oriented functions. Any clue why? Is it already possible to communicate with databases directly from mobile devices?