Makefile

#-------------------------------------------------------------------------------
#
# 	Makefile for building target binaries.
#

# Configuration
BUILD_ROOT = $(abspath ./)
BIN_DIR = ./bin
LINUX_BIN_DIR = ./build/linux

GOBUILD = go build
GOBUILD_TAGS =
GOBUILD_ENVS = CGO_ENABLED=0
GOBUILD_LDFLAGS =
GOBUILD_FLAGS = -tags "$(GOBUILD_TAGS)" -ldflags "$(GOBUILD_LDFLAGS)"
GOBUILD_ENVS_LINUX = $(GOBUILD_ENVS) GOOS=linux GOARCH=amd64

GOTEST = go test
GOTEST_FLAGS = -test.short

# Build flags
GL_VERSION ?= $(shell git describe --always --tags --dirty)
GL_TAG ?= latest
BUILD_INFO = $(shell go env GOOS)/$(shell go env GOARCH) tags($(GOBUILD_TAGS))-$(shell date '+%Y-%m-%d-%H:%M:%S')
#
# Build scripts for command binaries.
#
CMDS = $(patsubst cmd/%,%,$(wildcard cmd/*))
# .PHONY: $(CMDS) $(addsuffix -linux,$(CMDS))
define CMD_template
$(BIN_DIR)/$(1) $(1) : GOBUILD_LDFLAGS+=$$($(1)_LDFLAGS)
$(BIN_DIR)/$(1) $(1) :
	@ \
	rm -f $(BIN_DIR)/$(1) ; \
	echo "[#] go build ./cmd/$(1)"
	$$(GOBUILD_ENVS) \
	go build $$(GOBUILD_FLAGS) \
	    -o $(BIN_DIR)/$(1) ./cmd/$(1)
$(LINUX_BIN_DIR)/$(1) $(1)-linux : GOBUILD_LDFLAGS+=$$($(1)_LDFLAGS)
$(LINUX_BIN_DIR)/$(1) $(1)-linux :
	@ \
	rm -f $(LINUX_BIN_DIR)/$(1) ; \
	echo "[#] go build ./cmd/$(1)"
	$$(GOBUILD_ENVS_LINUX) \
	go build $$(GOBUILD_FLAGS) \
	    -o $(LINUX_BIN_DIR)/$(1) ./cmd/$(1)
endef
$(foreach M,$(CMDS),$(eval $(call CMD_template,$(M))))

# Build flags for each command
relay_LDFLAGS = -X 'main.version=$(GL_VERSION)' -X 'main.build=$(BUILD_INFO)'
BUILD_TARGETS += relay

linux : $(addsuffix -linux,$(BUILD_TARGETS))

RELAY_IMAGE = relay:$(GL_TAG)
RELAY_DOCKER_DIR = $(BUILD_ROOT)/build/relay

relay-image: relay-linux
	@ echo "[#] Building image $(RELAY_IMAGE) for $(GL_VERSION)"
	@ rm -rf $(RELAY_DOCKER_DIR)
	@ \
	BIN_DIR=$(abspath $(LINUX_BIN_DIR)) \
	BIN_VERSION=$(GL_VERSION) \
	BUILD_TAGS="$(GOBUILD_TAGS)" \
	$(BUILD_ROOT)/docker/relay/build.sh $(RELAY_IMAGE) $(BUILD_ROOT) $(RELAY_DOCKER_DIR)

test :
	$(GOBUILD_ENVS) $(GOTEST) $(GOBUILD_FLAGS) ./... $(GOTEST_FLAGS)

.DEFAULT_GOAL := all
all : $(BUILD_TARGETS)