In Neon and Kubuntu CI with Qt 5.9.3 on master branch. https://build.neon.kde.org/job/xenial_unstable_plasma_breeze_bin_amd64/186/console 17:55:15 /workspace/build/kstyle/breezestyle.cpp: In member function ‘virtual bool Breeze::Style::drawScrollBarSliderControl(const QStyleOption*, QPainter*, const QWidget*) const’: 17:55:15 /workspace/build/kstyle/breezestyle.cpp:5013:136: error: ‘const class QStyleOption’ has no member named ‘styleObject’ 17:55:15 const bool widgetMouseOver( widget ? _animations->scrollBarEngine().isHovered( widget, QStyle::SC_ScrollBarGroove ) : option->styleObject->property("hover").toBool()); 17:55:15 ^ 17:55:15 kstyle/CMakeFiles/breeze.dir/build.make:910: recipe for target 'kstyle/CMakeFiles/breeze.dir/breezestyle.cpp.o' failed
I forgot we were still building the Qt4 style, so the fail is apparently in that. Fixed with: https://commits.kde.org/breeze/fc830e4710a9994a13911ac6cbc60ffda8f27715