I noticed during build that QT_GUI_LIB is defined, and discovered after some searching a remark at https://doc.qt.io/qt-5/qtgui-index.html#building-with-qmake that...
If you use qmake to build your projects, Qt GUI is included by default. To disable Qt GUI, add the following line to your .pro file:
QT -= gui
I noticed during build that
QT_GUI_LIBis defined, and discovered after some searching a remark at https://doc.qt.io/qt-5/qtgui-index.html#building-with-qmake that...