Makefile

PREVIOUS_TAG ?= $(shell git tag -l | tail -n 1)
TAG=v2.2.0

.PHONY: help
help:
	@echo 'Usage:'
	@echo '   make generate-index        Generate `index.js` and `post.js` files'
	@echo '   make main-linux-amd64      Build static binary for linux/amd64'
	@echo '   make main-linux-arm64      Build static binary for linux/arm64'
	@echo '   make main-windows-amd64    Build static binary for windows/amd64'
	@echo '   make build                 Build all static binaries + `index.js` and `post.js`'
	@echo '   make dist                  Build generated artifacts and commit them locally'
	@echo '   make tag                   Print tag instructions'
	@echo '   make release               Print release instructions'
	@echo ''

UPX_BIN := $(shell command -v upx 2> /dev/null)
COMMAND := "."

.PHONY: js
js:
	rm -f index.js post.js
	echo 'package main; import ("os"; "text/template"); func main() { tmpl, _ := template.ParseFiles("index.template.js"); tmpl.Execute(os.Stdout, map[string]string{"Args": ""}) }' > temp.go && go run temp.go > index.js && rm temp.go
	echo 'package main; import ("os"; "text/template"); func main() { tmpl, _ := template.ParseFiles("index.template.js"); tmpl.Execute(os.Stdout, map[string]string{"Args": "--post"}) }' > temp.go && go run temp.go > post.js && rm temp.go

.PHONY: main-linux-amd64
main-linux-amd64: _require-upx
	rm -f main-linux-amd64-*
	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -installsuffix static -o "main-linux-amd64" $(COMMAND)
	upx -q -9 "main-linux-amd64"

.PHONY: main-linux-arm64
main-linux-arm64: _require-upx
	rm -f main-linux-arm64-*
	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags="-s -w" -installsuffix static -o "main-linux-arm64" $(COMMAND)
	upx -q -9 "main-linux-arm64"

.PHONY: main-windows-amd64
main-windows-amd64: _require-upx
	rm -f main-windows-amd64-*
	CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="-s -w" -installsuffix static -o "main-windows-amd64.exe" $(COMMAND)
	upx -q -9 "main-windows-amd64.exe"

.PHONY: build
build: main-linux-amd64 main-linux-arm64 main-windows-amd64 js

# Rebuild generated action artifacts and create a local dist commit.
.PHONY: dist
dist: build
	git add main-linux-amd64 main-linux-arm64 main-windows-amd64.exe index.js post.js
	git commit -m "dist: rebuild binaries"

.PHONY: _require-upx
_require-upx:
ifndef UPX_BIN
	$(error 'upx is not installed, it can be installed via "apt-get install upx", "apk add upx" or "brew install upx".')
endif

.PHONY: bump tag release

bump:
	gsed -i "s/$(PREVIOUS_TAG)/$(TAG)/g" README.md
	gsed -i "s/$(PREVIOUS_TAG)/$(TAG)/g" action.yml

tag:
	@echo 'Release tags are created by the manual GitHub Actions "Release" workflow after CI commits generated artifacts.'
	@echo 'Do not create release tags locally.'
	@exit 1

release:
	@echo 'Releases are created by the manual GitHub Actions "Release" workflow.'
	@echo 'Run it with the desired tag, for example TAG=$(TAG), so CI builds, commits, tags, signs, and attests the exact release artifacts.'