To compile QtCreator you need Qt framework, if your system doesn't ship a version >=4.7.0 you must download one
To compile QtCreator you need to use the usual qmake & make sequence.
cd /path/to/cloneOfandroid-qt-creator qmake -r make -j3
you have to replace 3 with the number of CPU´s your PC have + 1
If you use QtSDK you must use full path for qmake command
of-course you have to replace /opt/QtSDK/Desktop/Qt/471/gcc/bin/qmake with the path you've installed QtSDK.