# Objective-C/C++ sources go in SOURCES, like all other sources SOURCES += $$OBJECTIVE_SOURCES unset(OBJECTIVE_SOURCES) # Strip C/C++ flags from QMAKE_OBJECTIVE_CFLAGS just in case QMAKE_OBJECTIVE_CFLAGS -= $$QMAKE_CFLAGS $$QMAKE_CXXFLAGS # Add Objective-C/C++ flags to C/C++ flags, the compiler can handle it QMAKE_CFLAGS += $$QMAKE_OBJECTIVE_CFLAGS QMAKE_CXXFLAGS += $$QMAKE_OBJECTIVE_CFLAGS unset(QMAKE_OBJECTIVE_CFLAGS)