.PHONY: help
# Show this help prompt
help:
@echo ' Usage:'
@echo ''
@echo ' make <target>'
@echo ' Targets:'
@awk '/^#/{ comment = substr($$0,3) } comment && /^[a-zA-Z][a-zA-Z0-9._/-]+ ?:/{ print " ", $$1, comment }' $(MAKEFILE_LIST) | column -t -s ':' | grep -v 'IGNORE' | sort -u