Version is now based on MD5SUM of its binary

buildscripts/git-commit-id.sh

@@ -1,34 +0,0 @@
-#!/usr/bin/env bash
-#
-# Mini Copy (C) 2015 Minio, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-
-CONST_FILE=build-constants.go
-
-cat > $CONST_FILE <<EOF
-/*
- * ** DO NOT EDIT THIS FILE. THIS FILE IS AUTO GENERATED BY RUNNING MAKE **
- */
-
-package main
-
-const (
-	mcGitCommitHash = "__GIT_COMMIT_HASH__"
-)
-EOF
-
-commit_id=$(git log --format="%H" -n 1)
-sed -i "s/__GIT_COMMIT_HASH__/$commit_id/" $CONST_FILE

hash-binary.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"crypto/md5"
+)
+
+// mustHashBinarySelf computes MD5SUM of a binary file on disk
+func hashBinary(progName string) (string, error) {
+	h := md5.New()
+
+	file, err := os.Open(progName) // For read access.
+	if err != nil {
+		return "", err
+	}
+
+	io.Copy(h, file)
+	return fmt.Sprintf("%x", h.Sum(nil)), nil
+}
+
+// mustHashBinarySelf computes MD5SUM of its binary file on disk
+func mustHashBinarySelf() string {
+	hash, _ := hashBinary(os.Args[0])
+	return hash
+}

main.go

@@ -78,13 +78,12 @@ func getSystemData() map[string]string {
 	}
 }
 
-// Version number
-var Version = "Development"
+// Version is based on MD5SUM of its binary
+var Version = mustHashBinarySelf()
 
 func main() {
 	app := cli.NewApp()
 	app.Usage = "Mini Copy for object storage and filesystems"
-	log.Println(Version)
 	app.Version = Version
 	app.Commands = options
 	app.Flags = flags