DEVICE_ALT2_VARIANT="$(DEVICE_ALT2_VARIANT)" \
DEVICE_TITLE="$(DEVICE_TITLE)" \
TARGET="$(BOARD)" \
- SUBTARGET="$(SUBTARGET)" \
+ SUBTARGET="$(if $(SUBTARGET),$(SUBTARGET),generic)" \
VERSION_NUMBER="$(VERSION_NUMBER)" \
VERSION_CODE="$(VERSION_CODE)" \
SUPPORTED_DEVICES="$(SUPPORTED_DEVICES)" \