About Qt4.7.4 Mysql driver

[GreatJin]

I installed Qt creator with Qt4.7.4 on the ubuntu1404(64bits), I want to use MySql database, but there is not the driver for MySql , I build the source of Qt4.7.4 to get the driver, I copy the driver to my QtSDK directory. It still prompt not load driver.
Who can give me some suggestion to solve this problem?
Thanks!

[ChrisW67]

Where exactly did you put the Qt Mysql Plugin?