extension = $(patsubst windows,.exe,$(filter windows,$(1)))

VALID_OS_ARCH := "[darwin/amd64][linux/amd64][linux/arm][linux/arm64][openbsd/amd64][windows/amd64][windows/386]"

os.darwin := Darwin

os.linux := Linux

os.openbsd := OpenBSD

os.windows := Windows

arch.amd64 := x86_64

arch.arm := armhf

arch.arm64 := aarch64

arch.386 := i386

define gocross

$(if $(findstring [$(1)/$(2)],$(VALID_OS_ARCH)), \

build-clean:

rm -Rf $(PREFIX)/bin/*

build-x: $(shell find . -type f -name '*.go')

$(foreach GOARCH,$(TARGET_ARCH),$(foreach GOOS,$(TARGET_OS),$(call gocross,$(GOOS),$(GOARCH))))

$(PREFIX)/bin/$(PKG_NAME)$(call extension,$(GOOS)): $(shell find . -type f -name '*.go')

$(GO) build \

-o $@ \

$(VERBOSE_GO) -tags "$(BUILDTAGS)" \

-ldflags "$(GO_LDFLAGS)" $(GO_GCFLAGS) ./cmd/docker-machine

build: $(PREFIX)/bin/$(PKG_NAME)$(call extension,$(GOOS))