1$(SECURE_BOOT_SIGNING_KEY):
2	@echo "Need to generate secure boot signing key."
3	@echo "One way is to run this command:"
4	@echo "$(ESPSECUREPY) generate_signing_key $@"
5	@echo "Keep key file safe after generating."
6	@echo "(See secure boot documentation for risks & alternatives.)"
7	@exit 1
8