linux-kernel - [PATCH, v2] kbuild: Improve version string logic

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Date:	Mon, 12 Oct 2009 21:57:33 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Frans Pop <elendil@...net.nl>
Cc:	Dirk Hohndel <hohndel@...radead.org>, Len Brown <lenb@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH, v2] kbuild: Improve version string logic


This is basically your original patch that adds '+' to the short version 
string of kernels that are 'between' -rc tags. (i dropped the '+' within 
the long version i did in v1 - there were objections against that)

Would this be ok?

	Ingo

-------------->
>From 597e5b15dd0cbb3158afc438e5edae9986e6b76a Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@...ux-foundation.org>
Date: Tue, 6 Oct 2009 09:31:03 -0700
Subject: [PATCH] kbuild: Improve version string logic

It changes how CONFIG_LOCALVERSION_AUTO works, in the following trivial
way:

 - if it is set, things work the way they always have, and you get a
   extended kernel release like:

	2.6.32-rc3-00052-g0eca52a

 - but if it is _not_ set, we'll still try to get a version from the
   underlying SCM (we actually support git, hg and SVN right now, even if
   some comments may say "git only"), and if the underlying SCM says it
   has a local version, we append just "+", so you get a version number
   like:

	2.6.32-rc3+

IOW, you'd never get 2.6.32-rc0, but you'd get either the complex git
version number (or SVN/hg/whatever), or at least "2.6.31+" with the "+"
showing that it is more than plain 2.6.31.

Signed-off-by: Ingo Molnar <mingo@...e.hu>
Cc: Frans Pop <elendil@...net.nl>
Cc: Dirk Hohndel <hohndel@...radead.org>
Cc: Len Brown <lenb@...nel.org>
LKML-Reference: <20091006173508.GA4786@...e.hu>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 Makefile |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 927d7a3..5dab509 100644
--- a/Makefile
+++ b/Makefile
@@ -963,8 +963,6 @@ localver = $(subst $(space),, $(string) \
 # .scmversion is used when generating rpm packages so we do not loose
 # the version information from the SCM when we do the build of the kernel
 # from the copied source
-ifdef CONFIG_LOCALVERSION_AUTO
-
 ifeq ($(wildcard .scmversion),)
         _localver-auto = $(shell $(CONFIG_SHELL) \
                          $(srctree)/scripts/setlocalversion $(srctree))
@@ -972,7 +970,14 @@ else
         _localver-auto = $(shell cat .scmversion 2> /dev/null)
 endif
 
+ifdef CONFIG_LOCALVERSION_AUTO
 	localver-auto  = $(LOCALVERSION)$(_localver-auto)
+else
+	ifeq ($_localver-auto,)
+		localver-auto = $(LOCALVERSION)
+	else
+		localver-auto = $(LOCALVERSION)+
+	endif
 endif
 
 localver-full = $(localver)$(localver-auto)
--
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