-mcpu=$(MCU_TARGET) -Wa,-mthumb $(DEFS)
override CFLAGS = -fomit-frame-pointer \
-mthumb -ffunction-sections -fdata-sections -MMD \
-MF$(DEP_DIR)$(patsubst %.o,%.d,$(notdir $@)) \
-mcpu=$(MCU_TARGET) -Wa,-mthumb $(DEFS)
override CFLAGS = -fomit-frame-pointer \
-mthumb -ffunction-sections -fdata-sections -MMD \
-MF$(DEP_DIR)$(patsubst %.o,%.d,$(notdir $@)) \