Many mickle makes a Makefile ;)

Makefile

@@ -0,0 +1,69 @@
+# Many mickle makes a Makefile ;) 
+
+# variable definitions
+
+APP := flibgolite
+
+VERSION := $(shell git describe --tags --always --dirty)
+GOVERSION := $(shell go env GOVERSION)
+BUILDTIME := $(shell date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+HOSTOS := $(shell go env GOHOSTOS)
+HOSTARCH := $(shell go env GOHOSTARCH)
+
+CMD_MAIN := $(shell find cmd/$(APP) -name main.go)
+OUTPUT := $(patsubst cmd/%/main.go,%,$(CMD_MAIN))
+
+build_cmd = \
+	GOOS=$(1) \
+	GOARCH=$(2) \
+	$(if $(3),GOARM=$(3)) \
+	go build -ldflags " \
+	-X 'main.version=$(VERSION)' \
+    -X 'main.buildTime=$(BUILDTIME)' \
+    -X 'main.goversion=$(GOVERSION)' \
+	-X 'main.target=$(1)-$(2)$(if $(3),-$(3))'" \
+	-o $(OUTPUT)-$(1)-$(2)$(if $(3),-$(3))$(if $(findstring windows,$(1)),.exe) \
+	$(abspath $(dir $(CMD_MAIN)))
+
+all: build
+
+# Current host build
+build:
+	$(call build_cmd,$(HOSTOS),$(HOSTARCH),)
+
+
+# Cross builds
+xbuild: linux darwin windows
+
+# Linux builds ========================
+linux: build_linux_arm build_linux_arm64 build_linux_386 build_linux_amd64
+
+build_linux_386:
+	$(call build_cmd,linux,386,)
+
+build_linux_amd64:
+	$(call build_cmd,linux,amd64,)
+
+build_linux_arm:
+	$(call build_cmd,linux,arm,6)
+
+build_linux_arm64:
+	$(call build_cmd,linux,arm64,)
+
+# OSX (Darwin) builds =================
+darwin: build_darwin_amd64
+
+build_darwin_amd64:
+	$(call build_cmd,darwin,amd64,)
+
+# Windows builds ======================
+windows: build_windows_386 build_windows_amd64
+
+build_windows_386:
+	$(call build_cmd,windows,386,)
+
+build_windows_amd64:
+	$(call build_cmd,windows,amd64,)
+
+.PHONY: all check build xbuild linux darwin windows build_linux_arm build_linux_arm64 build_linux_386 build_linux_amd64 build_darwin_amd64 build_windows_386 build_windows_amd64

cmd/flibgolite/main.go

@@ -20,6 +20,8 @@ import (
 	"golang.org/x/text/message"
 )
 
+var version, buildTime, target, goversion string
+
 func main() {
 	serviceFlag := flag.String("service", "", `control FLibGoLite system service`)
 	reindexFlag := flag.Bool("reindex", false, `empty book stock database and then scan book stock directory to add books to database`)
@@ -78,7 +80,10 @@ Documentation at: <https://github.com/vinser/flibgolite>
 }
 
 func displayVersion() {
-	fmt.Printf("FLibGoLite ver.%s\n", "1.0.0")
+	fmt.Printf("FLibGoLite\n")
+	fmt.Printf("Version: %s (%s)\n", version, target)
+	fmt.Printf("Build time: %s\n", buildTime)
+	fmt.Printf("Golang version: %s\n", goversion)
 	os.Exit(0)
 }
 

cmd/flibgolite/service.go

@@ -48,6 +48,7 @@ func initService() service.Service {
 		options["SuccessExitStatus"] = "1 2 8 SIGKILL"
 		serviceCfg.Option = options
 	case "windows":
+	case "darwin":
 	default:
 		log.Fatalf("FLibGoLite on %s is not available yet\n", runtime.GOOS)
 	}