/usr/include/qt5/QtGui/QtGuiDepends is in qtbase5-dev 5.2.1+dfsg-1ubuntu14.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | /* This file was generated by qmake with the info from <root>/src/gui/gui.pro. */
#include <QtCore/QtCore>
|