Cannot find compiled addon modules in QT Creator

I’m using Qt 5.3.0 for MacOSX and trying to use the QtSystem addon module in my project. My Qt 5.3.0 was installed in ~/Qt5 . I simply followed this post ( http://qt-project.org/wiki/Building_Qt_5_from_Git ) to compile and install Qt modules into folder /usr/local/Qt-5.3.1. My question is – how to add this compiled module into my original Qt5 installation ? Thanks in advance!