# Background color
GREEN  				:= $(shell tput -Txterm setaf 2)
YELLOW 				:= $(shell tput -Txterm setaf 3)
BLUE 				:= $(shell tput -Txterm setaf 4)
MAGENTA             := $(shell tput -Txterm setaf 5)
WHITE  				:= $(shell tput -Txterm setaf 7)
RESET  				:= $(shell tput -Txterm sgr0)
TARGET_MAX_CHAR_NUM := 20
PADDING             := $(shell printf '%-24s' "")

## Show help
help:
	@echo ''
	@echo 'Usage:'
	@echo '  ${YELLOW}make${RESET} ${GREEN}<target>${RESET} ${MAGENTA}[variable=value]${RESET}'
	@echo ''
	@echo 'Targets:'
	@awk '/^[a-zA-Z\-\_0-9]+:/ { \
		helpMessage = match(lastLine, /^## (.*)/); \
		if (helpMessage) { \
			helpCommand = substr($$1, 0, index($$1, ":")-1); \
			helpMessage = substr(lastLine, RSTART + 3, RLENGTH); \
			gsub(/;;/,"\n${PADDING}${MAGENTA}>variable: ${RESET}", helpMessage); \
			printf "  ${YELLOW}%-$(TARGET_MAX_CHAR_NUM)s${RESET} ${GREEN}%s${RESET}\n", helpCommand, helpMessage; \
		} \
	} \
	{ lastLine = $$0 }' $(MAKEFILE_LIST)


MKFILE_PATH := $(abspath $(lastword $(MAKEFILE_LIST)))
MKFILE_DIR  := $(dir $(MKFILE_PATH))


.PHONY: release
## Build the sendpkt-rs
release:
	cargo build --release