From 97d6cfee0cbff1e5eb0993c2a0b2b68297b1152f Mon Sep 17 00:00:00 2001
From: irengrig <ichern@google.com>
Date: Fri, 21 Sep 2018 11:48:39 +0200
Subject: [PATCH] Print version information by the script (#110)

---
 tools/build_defs/framework.bzl | 5 ++++-
 tools/build_defs/version.bzl   | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 tools/build_defs/version.bzl

diff --git a/tools/build_defs/framework.bzl b/tools/build_defs/framework.bzl
index a92d7ff2..7750ac50 100644
--- a/tools/build_defs/framework.bzl
+++ b/tools/build_defs/framework.bzl
@@ -3,6 +3,7 @@
 """
 
 load("@bazel_skylib//lib:collections.bzl", "collections")
+load(":version.bzl", "VERSION")
 load(
     "//tools/build_defs:cc_toolchain_util.bzl",
     "LibrariesToLinkInfo",
@@ -177,8 +178,10 @@ def cc_external_rule_impl(ctx, attrs):
     if not ctx.attr._target_os[OSInfo].is_osx:
         set_envs = "\n".join(["export {}=\"{}\"".format(key, env[key]) for key in env])
 
+    version_and_lib = "Bazel external C/C++ Rules #{}. Building library '{}'".format(VERSION, lib_name)
+
     script_lines = [
-        "echo \"Building external library '{}'\"".format(lib_name),
+        "echo \"\n{}\n\"".format(version_and_lib),
         "set -e",
         "source " + shell_utils,
         set_envs,
diff --git a/tools/build_defs/version.bzl b/tools/build_defs/version.bzl
new file mode 100644
index 00000000..901e5110
--- /dev/null
+++ b/tools/build_defs/version.bzl
@@ -0,0 +1 @@
+VERSION = "0.0.1"