Makefile

# Set an output prefix, which is the local directory if not specified
PREFIX?=$(shell pwd)

# Populate version variables
# Add to compile time flags
PKG := github.com/moncho/dry
VERSION := $(shell cat APPVERSION)
GITCOMMIT := $(shell git rev-parse --short HEAD)
GITUNTRACKEDCHANGES := $(shell git status --porcelain --untracked-files=no)
OS := $(shell uname)
ifneq ($(GITUNTRACKEDCHANGES),)
	GITCOMMIT := $(GITCOMMIT)-dirty
endif
CTIMEVAR=-X $(PKG)/version.GITCOMMIT=$(GITCOMMIT) -X $(PKG)/version.VERSION=$(VERSION)
GO_LDFLAGS=-ldflags "-w $(CTIMEVAR)"
GO_LDFLAGS_STATIC=-ldflags "-w $(CTIMEVAR) -extldflags -static"
GOOSES = darwin freebsd linux windows
GOARCHS = amd64 386 arm

print-%: ; @echo $*=$($*)

run: ## Runs dry
	vgo run ./main.go

vendor: ## Runs dep ensure
	dep ensure
	# TODO remove once https://github.com/golang/dep/issues/433 is resolved
	# Workaround for OSX sed behaving differently
	case "${OS}" in \
		Darwin) find vendor -type f -name "*.go" -print0 | xargs -0 sed -i '' 's/Sirupsen\/logrus/sirupsen\/logrus/g' ;;\
		*)      find vendor -type f -name "*.go" -print0 | xargs -0 sed -i    's/Sirupsen\/logrus/sirupsen\/logrus/g' ;;\
	esac ;\
	touch $@

build: ## Builds dry
	vgo build .

install: ## Installs dry
	vgo install $(PKG)

test: ## Run tests
	vgo test $(shell go list ./... | grep -v /vendor/ | grep -v mock)

benchmark: ## Run benchmarks
	vgo test -bench $(shell go list ./... | grep -v /vendor/ | grep -v mock) 

define buildpretty
$(if $(and $(filter-out darwin_arm,$(1)_$(2)), $(filter-out windows_arm,$(1)_$(2)), $(filter-out windows_386,$(1)_$(2))), \
	mkdir -p ${PREFIX}/cross/$(1)/$(2);
	GOOS=$(1) GOARCH=$(2) CGO_ENABLED=0 go build -o ${PREFIX}/cross/$(1)/$(2)/dry -a ${GO_LDFLAGS_STATIC} .;
)
endef

cross: *.go VERSION ## Cross compiles dry
	$(foreach GOARCH,$(GOARCHS),$(foreach GOOS,$(GOOSES),$(call buildpretty,$(GOOS),$(GOARCH))))

define buildrelease
$(if $(and $(filter-out darwin_arm,$(1)_$(2)), $(filter-out windows_arm,$(1)_$(2)), $(filter-out windows_386,$(1)_$(2))), \
	mkdir -p ${PREFIX}/cross/$(1)/$(2);
	GOOS=$(1) GOARCH=$(2) CGO_ENABLED=0 go build -o ${PREFIX}/cross/dry-$(1)-$(2) -a ${GO_LDFLAGS_STATIC} .;
)
endef

release: *.go VERSION ## Prepares a dry release
	$(foreach GOARCH,$(GOARCHS),$(foreach GOOS,$(GOOSES),$(call buildrelease,$(GOOS),$(GOARCH))))

clean:
	rm -rf ${PREFIX}/cross

.PHONY: help vendor

# Magic as explained here: http://marmelab.com/blog/2016/02/29/auto-documented-makefile.html

help: ## Shows help
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'