1 CONFIG -= warn_on
2 QMAKE_CFLAGS += $$QMAKE_CFLAGS_WARN_OFF
3 QMAKE_CXXFLAGS += $$QMAKE_CXXFLAGS_WARN_OFF
4 QMAKE_OBJECTIVE_CFLAGS += $$QMAKE_OBJECTIVE_CFLAGS_WARN_OFF