feat: embed build version info in binaries

Makefile

@@ -0,0 +1,24 @@
+APP=inps
+
+VERSION ?= 0.1.0
+GIT_COMMIT := $(shell git rev-parse --short HEAD 2>/dev/null || echo unknown)
+BUILD_TIME := $(shell date -u '+%Y-%m-%dT%H:%M:%SZ')
+GO_VERSION := $(shell go env GOVERSION 2>/dev/null || echo unknown)
+
+LDFLAGS := -s -w \
+	-X 'github.com/openp2p-cn/inp2p/pkg/config.Version=$(VERSION)' \
+	-X 'github.com/openp2p-cn/inp2p/pkg/config.GitCommit=$(GIT_COMMIT)' \
+	-X 'github.com/openp2p-cn/inp2p/pkg/config.BuildTime=$(BUILD_TIME)' \
+	-X 'github.com/openp2p-cn/inp2p/pkg/config.GoVersion=$(GO_VERSION)'
+
+.PHONY: build build-client build-server
+
+build: build-client build-server
+
+build-client:
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 \
+		go build -ldflags "$(LDFLAGS)" -o bin/inp2pc ./cmd/inp2pc
+
+build-server:
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 \
+		go build -ldflags "$(LDFLAGS)" -o bin/inp2ps ./cmd/inp2ps

cmd/inp2pc/main.go

@@ -41,7 +41,8 @@ func main() {
 	flag.Parse()
 
 	if *version {
-		fmt.Printf("inp2pc version %s\n", config.Version)
+		fmt.Printf("inp2pc version %s\ncommit: %s\nbuild: %s\ngo: %s\n",
+			config.Version, config.GitCommit, config.BuildTime, config.GoVersion)
 		os.Exit(0)
 	}
 

cmd/inp2ps/main.go

@@ -40,7 +40,8 @@ func main() {
 	flag.Parse()
 
 	if *version {
-		fmt.Printf("inp2ps version %s\n", config.Version)
+		fmt.Printf("inp2ps version %s\ncommit: %s\nbuild: %s\ngo: %s\n",
+			config.Version, config.GitCommit, config.BuildTime, config.GoVersion)
 		os.Exit(0)
 	}
 

pkg/config/config.go

@@ -9,9 +9,15 @@ import (
 	"strconv"
 )
 
-const (
-	Version = "0.1.0"
+// Version info (set via -ldflags)
+var (
+	Version   = "0.1.0"
+	GitCommit = "unknown"
+	BuildTime = "unknown"
+	GoVersion = "unknown"
+)
 
+const (
 	DefaultWSPort   = 27183 // WSS signaling
 	DefaultSTUNUDP1 = 27182 // UDP STUN port 1
 	DefaultSTUNUDP2 = 27183 // UDP STUN port 2