Makefile

GIT_HOST = github.com/lingxiankong
PWD := $(shell pwd)
BASE_DIR := $(shell basename $(PWD))
# Keep an existing GOPATH, make a private one if it is undefined
GOPATH_DEFAULT := $(PWD)/.go
export GOPATH ?= $(GOPATH_DEFAULT)
GOBIN_DEFAULT := $(GOPATH)/bin
export GOBIN ?= $(GOBIN_DEFAULT)

DEST := $(GOPATH)/src/$(GIT_HOST)/$(BASE_DIR)
SOURCES := $(shell find $(DEST) -name '*.go')
GOOS ?= $(shell go env GOOS)
VERSION ?= $(shell git describe --tags --always --abbrev=8)
LDFLAGS   := "-w -s -X '${GIT_HOST}/${BASE_DIR}/cmd.version=${VERSION}'"

ifneq ("$(DEST)", "$(PWD)")
    $(error Please run 'make' from $(DEST). Current directory is $(PWD))
endif

$(GOBIN):
	echo "create gobin"
	mkdir -p $(GOBIN)

work: $(GOBIN)

osctl: work $(SOURCES)
	CGO_ENABLED=0 GOOS=$(GOOS) go build \
		-ldflags $(LDFLAGS) \
		-o osctl \
		main.go

.PHONY: fmt
fmt:
	tools/check_gofmt.sh

.PHONY: clean
clean:
	rm -rf osctl

.PHONY: realclean
realclean: clean
	rm -rf vendor
	if [ "$(GOPATH)" = "$(GOPATH_DEFAULT)" ]; then \
		rm -rf $(GOPATH); \
	fi