Makefile

#!/usr/bin/make -f

export GO111MODULE=on

BUILD_DIR             ?= $(CURDIR)/build
MAIN_CMD             := $(CURDIR)/valin
BRANCH                := $(shell git rev-parse --abbrev-ref HEAD)
COMMIT                := $(shell git log -1 --format='%H')
GORELEASER_CONFIG     ?= ./.goreleaser.yml
GIT_HEAD_COMMIT_LONG  := $(shell git log -1 --format='%H')

ifeq (,$(VERSION))
  VERSION := $(shell git describe --exact-match 2>/dev/null)
  ifeq (,$(VERSION))
    VERSION := $(BRANCH)-$(COMMIT)
  endif
endif


###############################################################################
###                             Build / Install                             ###
###############################################################################

all: build

build: go.sum go-version
	@mkdir -p $(BUILD_DIR)
	go build -mod=readonly -o $(BUILD_DIR) $(BUILD_FLAGS) $(MAIN_CMD)

install: go.sum go-version
	go install -mod=readonly $(BUILD_FLAGS) $(MAIN_CMD)

.PHONY: build install

###############################################################################
###                               Go Version                                ###
###############################################################################

GO_MAJOR_VERSION = $(shell go version | cut -c 14- | cut -d' ' -f1 | cut -d'.' -f1)
GO_MINOR_VERSION = $(shell go version | cut -c 14- | cut -d' ' -f1 | cut -d'.' -f2)
MIN_GO_MAJOR_VERSION = 1
MIN_GO_MINOR_VERSION = 20
GO_VERSION_ERROR = Golang version $(GO_MAJOR_VERSION).$(GO_MINOR_VERSION) is not supported, \
please update to at least $(MIN_GO_MAJOR_VERSION).$(MIN_GO_MINOR_VERSION)

go-version:
	@echo "Verifying go version..."
	@if [ $(GO_MAJOR_VERSION) -gt $(MIN_GO_MAJOR_VERSION) ]; then \
		exit 0; \
	elif [ $(GO_MAJOR_VERSION) -lt $(MIN_GO_MAJOR_VERSION) ]; then \
		echo $(GO_VERSION_ERROR); \
		exit 1; \
	elif [ $(GO_MINOR_VERSION) -lt $(MIN_GO_MINOR_VERSION) ]; then \
		echo $(GO_VERSION_ERROR); \
		exit 1; \
	fi

.PHONY: go-version

###############################################################################
###                               Go Modules                                ###
###############################################################################

go.sum: go.mod
	@echo "Ensuring app dependencies have not been modified..."
	go mod verify
	go mod tidy

verify:
	@echo "Verifying all go module dependencies..."
	@find . -name 'go.mod' -type f -execdir go mod verify \;

tidy:
	@echo "Cleaning up all go module dependencies..."
	@find . -name 'go.mod' -type f -execdir go mod tidy \;

.PHONY: verify tidy