INSTALLING Qt Source Package Version %VERSION%.

For instructions on building and installing Qt for each supported platform,
please see http://doc.qt.io/qt-%SHORTVERSION%/build-sources.html,
or follow one of these links:

Mac OS X:         http://doc.qt.io/qt-%SHORTVERSION%/osx-building.html
Windows:          http://doc.qt.io/qt-%SHORTVERSION%/windows-building.html
X11 Platforms:    http://doc.qt.io/qt-%SHORTVERSION%/linux-building.html