GOCMD := go
BINARY := bombadillo
PREFIX := /usr/local
EXEC_PREFIX := ${PREFIX}
BINDIR := ${EXEC_PREFIX}/bin
DATAROOTDIR := ${PREFIX}/share
MANDIR := ${DATAROOTDIR}/man
MAN1DIR := ${MANDIR}/man1
test : GOCMD := go1.11.13

# Use a dateformat rather than -I flag since OSX
# does not support -I. It also doesn't support 
# %:z - so settle for %z.
BUILD_TIME := ${shell date "+%Y-%m-%dT%H:%M%z"}

# If VERSION is empty or not defined use the contents of the VERSION file
VERSION    := ${shell git describe --tags 2> /dev/null}
ifndef VERSION
	VERSION  := ${shell cat ./VERSION}
endif

LDFLAGS  := -ldflags "-s -X main.version=${VERSION} -X main.build=${BUILD_TIME}"

.PHONY: build
build:
	${GOCMD} build ${LDFLAGS} -o ${BINARY}

.PHONY: install
install: install-bin install-man clean

.PHONY: install-man
install-man: bombadillo.1
	gzip -k ./bombadillo.1
	install -d ${DESTDIR}${MAN1DIR}
	install -m 0644 ./bombadillo.1.gz ${DESTDIR}${MAN1DIR}

.PHONY: install-bin
install-bin: build
	install -d ${DESTDIR}${BINDIR}
	install -m 0755 ./${BINARY} ${DESTDIR}${BINDIR}

.PHONY: clean
clean: 
	${GOCMD} clean
	rm -f ./bombadillo.1.gz 2> /dev/null

.PHONY: uninstall
uninstall: clean
	rm -f ${DESTDIR}${MAN1DIR}/bombadillo.1.gz
	rm -f ${DESTDIR}${BINDIR}/${BINARY}

.PHONY: test
test: clean build