I am building a QT app using QTwidgets to run in a RaspberyPi3 with an image inside the SDcard built with buildroot.
I suppose that charts are supported since they are based
On Ubuntu 18.04, installing libqt5charts5-dev (as suggested by eyllanesc) using Synaptic Package Manager solved my issue. Version: Qt Creator 4.5.2 based on Qt 5.9.5.