appname := scrawl
sources := $(wildcard *.go)

build = GOOS=$(1) GOARCH=$(2) go build -o build/$(appname)$(3)
tar = cd build && tar -cvzf $(appname)_$(1)_$(2).tar.gz $(appname)$(3) && rm $(appname)$(3)
zip = cd build && zip $(appname)_$(1)_$(2).zip $(appname)$(3) && rm $(appname)$(3)

.PHONY: all windows darwin linux clean

all: windows darwin linux

clean:
	rm -rf build/

# linux builds
linux: build/$(appname)_linux_arm.tar.gz build/$(appname)_linux_arm64.tar.gz build/$(appname)_linux_386.tar.gz build/$(appname)_linux_amd64.tar.gz

build/$(appname)_linux_386.tar.gz: $(sources)
	$(call build,linux,386,)
	$(call tar,linux,386)

build/$(appname)_linux_amd64.tar.gz: $(sources)
	$(call build,linux,amd64,)
	$(call tar,linux,amd64)

build/$(appname)_linux_arm.tar.gz: $(sources)
	$(call build,linux,arm,)
	$(call tar,linux,arm)

build/$(appname)_linux_arm64.tar.gz: $(sources)
	$(call build,linux,arm64,)
	$(call tar,linux,arm64)

# darwin builds
darwin: build/$(appname)_darwin_amd64.tar.gz

build/$(appname)_darwin_amd64.tar.gz: $(sources)
	$(call build,darwin,amd64,)
	$(call tar,darwin,amd64)

# windows builds
windows: build/$(appname)_windows_386.zip build/$(appname)_windows_amd64.zip

build/$(appname)_windows_386.zip: $(sources)
	$(call build,windows,386,.exe)
	$(call zip,windows,386,.exe)

build/$(appname)_windows_amd64.zip: $(sources)
	$(call build,windows,amd64,.exe)
	$(call zip,windows,amd64,.exe)