DESTDIR ?= 
GO ?= go
GOFLAGS ?= -v -buildvcs=false -buildmode=exe -ldflags "-w -X `${GO} list`.Date=${DATE} -X `${GO} list`.Vendor=${GOOS} -X `${GO} list`.Version=${VERSION}"
PREFIX ?= /usr/local
BINDIR ?= ${PREFIX}/bin
MANDIR ?= ${PREFIX}/man
DATE ?= `date -u +%F`
GOOS ?= `${GO} env GOOS`
VERSION ?= 1.0I+${REV}
REV ?= `svn info --show-item revision || git rev-list --all | wc -l`

all: help

build: ## Build
	${GO} build ${GOFLAGS} ./cmd/aya
clean: ## Remove built artifact(s)
	rm -f aya
help:
	@printf "Aya v%s\n" ${VERSION}
	@printf "Build targets: \n"
	@printf "\n"
	@awk 'BEGIN {FS = ":.*## "}; /^[a-zA-Z0-9_.%-]+:.*## / {printf "  %-12s%s\n", $$1, $$2}' ${MAKEFILE}
pre-install:
	mkdir -p ${DESTDIR}${BINDIR}
	mkdir -p ${DESTDIR}${MANDIR}/man1
install: pre-install ## Copy the built artifact(s) and manual pages into the system
	install -m0755 aya ${DESTDIR}${BINDIR}
	install -m0644 aya.1 ${DESTDIR}${MANDIR}/man1
uninstall: ## Remove the built artifact(s) and manual pages from the system
	rm -f ${DESTDIR}${BINDIR}/aya
	rm -f ${DESTDIR}${MANDIR}/man1/aya.1