QGnomePlatform is a Qt Platform Theme aimed to accommodate as much of GNOME settings as possible and utilize them in Qt applications without modifying them - making them fit into the environment as well as possible.
Please note this library uses private Qt headers. It's most likely won't be forward nor backward compatible. This means you'll have to recompile it with every Qt update.
mkdir build
cd build
qmake-qt5 ..
make && make install
Should be automatically used when using Gtk based desktops (such as Gnome, Cinnamon or Xfce). You can use also use this platform
theme by setting the QT_QPA_PLATFORMTHEME to "gnome" - so for example putting the following command in your .bashrc
works well:
export QT_QPA_PLATFORMTHEME='gnome'