.PHONY: all linux darwin freebsd clean
all: linux darwin freebsd

linux: $(addprefix dist/autoupdate.linux.,amd64 arm64)
darwin: $(addprefix dist/autoupdate.darwin.,arm64 amd64)
freebsd: $(addprefix dist/autoupdate.freebsd.,amd64 arm)

clean:
	rm -rf dist

dist/autoupdate.%: *.go go.mod go.sum
	$(eval platform := $(subst ., ,$@))
	$(eval os := $(word 2,$(platform)))
	$(eval arch := $(word 3,$(platform)))
	GOOS=$(os) GOARCH=$(arch) go build -o $@