Makefile

OS_ARCHS := linux-amd64 linux-386 windows-amd64 windows-386 darwin-amd64
SRCS     := $(wildcard *.go)
VER      := $(shell grep -Eo 'VERSION = `(.*)`' main.go | cut -d'`' -f2)
TGTS     := $(foreach os_arch,$(OS_ARCHS),bin/saver-$(os_arch))
BUILD    := $(shell echo `whoami`@`hostname -s` on `date`)
LDFLAGS  := -ldflags='-X "main.build=$(BUILD)"'

.PHONY: clean dev test

all: $(TGTS) bin/checksums.md5

test: $(TGTS)

clean:
	@rm -f bin/*

dev: $(SRCS)
	GOOS=linux GOARCH=amd64 go build $(LDFLAGS) -o saver-$@-$(VER) .

$(TGTS): $(SRCS)
	GOOS=$(word 2,$(subst -, ,$@)) GOARCH=$(word 3,$(subst -, ,$@)) go build $(LDFLAGS) -o $@-$(VER) .

$(SRCS):

bin/checksums.md5:
	cd bin && md5sum * > checksums.md5