TARGET=kwh-cost

DESTDIR:=
PREFIX:=/usr/local

CFLAGS=--std=c99 -O3 -Wall -Werror -Wextra -pedantic

DESTDIR=/

.PHONY: clean install uninstall test

${TARGET}: main.c
	${CC} ${CFLAGS} ${LDFLAGS} $< -o $@

clean:
	rm ${TARGET}

install:
	install -Dm755 ${TARGET} ${DESTDIR}${PREFIX}/bin/${TARGET}
	install -Dm644 LICENSE ${DESTDIR}${PREFIX}/share/licenses/${TARGET}/LICENSE

uninstall:
	rm -f ${DESTDIR}${PREFIX}/bin/${TARGET}
	rm -rf ${DESTDIR}${PREFIX}/share/licenses/${TARGET}

test:
	@echo -n "Does input \"3.68 120 30d\" gives 317.95? "
	@test "${shell ./kwh-cost 3.68 120 30d}" = "317.95" && { echo -e "\e[32mYES\e[0m"; } || { echo -e "\e[31mNO\e[0m"; }