When building Qt Charts (6.1.0 branch) for Android with NDK 21.3.6528147 the build will fail (at least in release mode) because of the following errors: [a result of -Werror,-Woverloaded-virtual]

qtbase/include/QtCharts/6.1.0/QtCharts\private/../../../../../../../qt6-6.1.0/qtcharts/src/charts/axis/chartaxiselement_p.h:70:18: error: 'ChartAxisElement::isEmpty' hides overloaded virtual function [-Werror,-Woverloaded-virtual] virtual bool isEmpty() = 0; ^ D:\Code\qt6-6.1.0-android-release\qtbase\include\QtWidgets\..\..\..\..\qt6-6.1.0\qtbase\src\widgets\graphicsview\qgraphicslayoutitem.h:97:18: note: hidden overloaded virtual function 'QGraphicsLayoutItem::isEmpty' declared here: different qualifiers ('const' vs unqualified) virtual bool isEmpty() const; ^ 1 error generated.

It's technically a warning, but since this is on by default it will cause issues for people, at least building for release which is what we would normally do for mobile platforms.