From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754882Ab2D1U4z (ORCPT ); Sat, 28 Apr 2012 16:56:55 -0400 Received: from smtp.snhosting.dk ([87.238.248.203]:17130 "EHLO smtp.domainteam.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751480Ab2D1U4x (ORCPT ); Sat, 28 Apr 2012 16:56:53 -0400 Date: Sat, 28 Apr 2012 22:56:51 +0200 From: Sam Ravnborg To: linux arch , lkml , linux-kbuild , Michal Marek Cc: Richard Weinberger , "David S. Miller" , Arnaud Lacombe , Andi Kleen Subject: [PATCH v2 0/4] kbuild: Move vmlinux link out of top-level Makefile Message-ID: <20120428205651.GA7426@merkur.ravnborg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following patchset moves all the magic used to deal with the final link of vmlinux from the top-level Makefile to a shell script. The main motivation was to convert the almost unreadable mess in the top-level Makefile to an easy to read/maintain shell script. The final link stages are serialized anyway - so there where nothing gained by using the Makefile logic to handle this. What we gain: - A readable final link of vmlinux - Less junk in the top-level Makefile What we loose by the conversion: - We no logner rebuild if one of the .tmp_kallsyms files are deleted. - We no longer rebuild if vmlinux.o is deleted None of the above cases are hit by a typical kernel developer so the drawbacks are acceptable. I had to implement special handling of um in the link-vmlinux script. It is not pretty by any means, but I could not come up with something better. My previous attempts to use ld for um linking has failed, so this kludge was introduced. There is no outstanding issues to my knowledge, and the patchset is ready to be applied. I assume this should go in via the kbuild#misc tree. v2: - rebuild if options to ld changes (Andi Kleen) - shell script improvements from Nick Bowler - clean target calls script to clean up after link - include documentation of LDFLAGS_vmlinux Sam Documentation/kbuild/kbuild.txt | 19 +++++ Makefile | 217 ++++---------------------------------------------- arch/sparc/Makefile | 11 --- arch/sparc/boot/Makefile | 14 ++-- arch/um/Makefile | 11 +-- scripts/link-vmlinux.sh | 211 ++++++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 256 insertions(+), 227 deletions(-) Sam Ravnborg (4): kbuild: drop unused KBUILD_VMLINUX_OBJS from top-level Makefile kbuild: refactor final link of sparc32 kbuild: link of vmlinux moved to a script kbuild: document KBUILD_LDS, KBUILD_VMLINUX_{INIT,MAIN} and LDFLAGS_vmlinux