Revision control
++ CONFIG -= rtti
++ QMAKE_CFLAGS += $$QMAKE_CFLAGS_RTTI_OFF
++ QMAKE_CXXFLAGS += $$QMAKE_CXXFLAGS_RTTI_OFF
++ DEFINES += QT_NO_DYNAMIC_CAST
++ CONFIG -= rtti
++ QMAKE_CFLAGS += $$QMAKE_CFLAGS_RTTI_OFF
++ QMAKE_CXXFLAGS += $$QMAKE_CXXFLAGS_RTTI_OFF
++ DEFINES += QT_NO_DYNAMIC_CAST