comma := ,
LDLIBS := $(addprefix -Wl$(comma),$(LDLIBS))
LDFLAGS := $(addprefix -Wl$(comma),$(LDFLAGS))
-EXTRA_LDFLAGS := $(addprefix -Wl$(comma),$(EXTRA_LDFLAGS))
+override EXTRA_LDFLAGS := $(addprefix -Wl$(comma),$(EXTRA_LDFLAGS))
O_TO_EXE = $(CC) $(CFLAGS) $(LDFLAGS_$(@)) \
-Wl,-Map=$(@).map,--cref -o $@ $(OBJS-y) $(LDFLAGS) $(EXTRA_LDFLAGS) $(LDLIBS)
else