Compile Qt Libraries and add it to Qt Creator
I download and install Qt 5.0.1 for Linux 64-bit (388 MB) then I download Qt libraries 4.8.4 for Linux/X11 (225 MB) and followed http://qt-project.org/doc/qt-4.8/install-x11.html
Now how I tell Qt Creator to use Qt 4.8 instead of Qt 5.0.1 ?
Go to Options / Build & Run / Qt Versions and add your new Qt versions.
Then edit the build settings in Projects and you should be fine
Hope it helps
After adding your Qt version you will need to add a new kit or change an existing one. Go to tools>options>build & run>kits and either set the new Qt version on one of your existing kits or add a new kit (maybe by cloning the existing one) and set the Qt version there.