when give -qt-xcb parameter to Qt 5.5.1 ./configure doesn't work

I am trying to build Qt 5.5.1 on my host machine Ubuntu 14.04 to cross-compile for my BeagleBone Black running Debian Wheezy, I am not sure what steps are needed before I give -qt-xcb to ./configure. I read this http://doc.qt.io/qt-5/linux-requirements.html and it tells that some packages are required for example libfontconfig1-dev, but there is no libfontconfig1-dev for armhf architecture. What to do? On what way to install those developer required packages on my Ubuntu host machine? To download tarballs and then compile with my armhf gcc?

Thank you very much for your response, I lost many days trying to make it work, but unsuccessfuly.