CGO_ENABLED = 0
DIR          = ./build

GO_ARCH_AMD	 = amd64
GO_ARCH_ARM  = arm64

GO_OS_WIN    = windows
GO_OS_DARWIN = darwin
GO_OS_LINUX	 = linux

EXECUTABLE   = i3-wallpaper-manager

BIN_LINUX_AMD64  = $(DIR)/$(EXECUTABLE)-linux-$(GO_ARCH_AMD)
BIN_LINUX_ARM64  = $(DIR)/$(EXECUTABLE)-linux-$(GO_ARCH_ARM)

CC       = go build
CFLAGS   = -trimpath
LDFLAGS  = all=-w -s
GCFLAGS  = all=
ASMFLAGS = all=

.PHONY: all
all: linux

.PHONY: linux
linux: $(BIN_LINUX_AMD64) $(BIN_LINUX_ARM64)
	chmod +x $(BIN_LINUX_ARM64)
	chmod +x $(BIN_LINUX_AMD64)

.PHONY: $(BIN_LINUX_AMD64)
$(BIN_LINUX_AMD64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_AMD) \
	GOOS=$(GO_OS_LINUX) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_LINUX_AMD64) .

.PHONY: $(BIN_LINUX_ARM64)
$(BIN_LINUX_ARM64):
	GO111MODULE=$(GOMOD) \
	GOARCH=$(GO_ARCH_ARM) \
	GOOS=$(GO_OS_LINUX) \
	CGO_ENABLED=$(CGO_ENABLED) \
	$(CC) $(CFLAGS) -ldflags="$(LDFLAGS)" -gcflags="$(GCFLAGS)" -asmflags="$(ASMFLAGS)" \
	-o $(BIN_LINUX_ARM64) .

.PHONY: clean
clean:
	rm -rf $(DIR)/*

tool-gofumpt:
	which golangci-lint > /dev/null 2>&1 || go install mvdan.cc/gofumpt@latest

fmt: tool-gofumpt
	gofumpt -w --extra .