helpers: Use version string in built binaries

helpers/build-release-binaries/main.go

@@ -17,12 +17,14 @@ var opts = struct {
 	Verbose   bool
 	SourceDir string
 	OutputDir string
+	Version   string
 }{}
 
 func init() {
 	pflag.BoolVarP(&opts.Verbose, "verbose", "v", false, "be verbose")
 	pflag.StringVarP(&opts.SourceDir, "source", "s", "/restic", "path to the source code `directory`")
 	pflag.StringVarP(&opts.OutputDir, "output", "o", "/output", "path to the output `directory`")
+	pflag.StringVar(&opts.Version, "version", "", "use `x.y.z` as the version for output files")
 	pflag.Parse()
 }
 
@@ -108,6 +110,11 @@ func abs(dir string) string {
 
 func build(sourceDir, outputDir, goos, goarch string) (filename string) {
 	filename = fmt.Sprintf("%v_%v_%v", "restic", goos, goarch)
+
+	if opts.Version != "" {
+		filename = fmt.Sprintf("%v_%v_%v_%v", "restic", opts.Version, goos, goarch)
+	}
+
 	if goos == "windows" {
 		filename += ".exe"
 	}

helpers/prepare-release/main.go

@@ -339,12 +339,14 @@ func extractTar(filename, outputDir string) {
 	}
 }
 
-func runBuild(sourceDir, outputDir string) {
+func runBuild(sourceDir, outputDir, version string) {
 	msg("building binaries...")
 	run("docker", "run", "--rm",
 		"--volume", sourceDir+":/restic",
 		"--volume", outputDir+":/output",
-		"restic/builder")
+		"restic/builder",
+		"go", "run", "-mod=vendor", "helpers/build-release-binaries/main.go",
+		"--version", version)
 }
 
 func readdir(dir string) []string {
@@ -443,7 +445,7 @@ func main() {
 	exportTar(opts.Version, tarFilename)
 
 	extractTar(tarFilename, sourceDir)
-	runBuild(sourceDir, opts.OutputDir)
+	runBuild(sourceDir, opts.OutputDir, opts.Version)
 	rmdir(sourceDir)
 
 	sha256sums(opts.OutputDir, filepath.Join(opts.OutputDir, "SHA256SUMS"))