From patchwork Wed Nov 23 16:41:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 9443781 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C37206075F for ; Wed, 23 Nov 2016 16:42:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CBE601FE83 for ; Wed, 23 Nov 2016 16:42:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C0C4B27BE5; Wed, 23 Nov 2016 16:42:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7B3651FE83 for ; Wed, 23 Nov 2016 16:42:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934412AbcKWQmP (ORCPT ); Wed, 23 Nov 2016 11:42:15 -0500 Received: from mail-pg0-f66.google.com ([74.125.83.66]:36280 "EHLO mail-pg0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934444AbcKWQmM (ORCPT ); Wed, 23 Nov 2016 11:42:12 -0500 Received: by mail-pg0-f66.google.com with SMTP id x23so1424962pgx.3 for ; Wed, 23 Nov 2016 08:42:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=V9hOuKycj6tRCsGcVa/qhyJOOmsEkwrhHxDRLzYPrZk=; b=CJXtyW4T/6sgp2VZgxIcEpNc3IpUA9XhxoR9QUVFm5xhiZeFkQb+8LcfRkea65OL+k NVnC/GKzx35+ybGM0hD5fYxUe/Qnpf2jh90lAWn/ZMukwJOOy9cug8aQHRZ5Gvmzn3T+ paAd5qSIgn9Cqi4Y64IPaTDqTRr/uNEt7ogwko1wflCEh9f6y3XBQIFRoTo94Vn+Hj+K xZ+GNN6us3x+5+PByJkj6JmTYhOT3VsdtQByC9ZzZJFPuNwpkk5YYl4lOD4l0ztiG5LD xLNRQoZFEBTbjckrBD1XYtL/ed00NJT3MBONldFwBWayk3SlKSGiZz+B2WNfqenD9o8q eXCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=V9hOuKycj6tRCsGcVa/qhyJOOmsEkwrhHxDRLzYPrZk=; b=XBj+xLiWk+T2rrNMgsdP1ChE+lJ7uENr6jE3UlkpOwuFv8rYTSf7uvECe3qi4S+wMR ntRUICKYS/gsCVYtFVedCxsQnp+jIXWO9KCE3gczWiUUiLEzCS/HZsU4lgGdIorJ/OM1 wP9XYu+uQNl881pMtU4Eel+oMWTST0X9lw67gF+k/qBmJngLbPrEcK/2KjKYs7f4NYRF 4zhw73hclG79D4WK2DVbSzWpSlkeRypM49E6+CdoYmWgBqcodnHsQL8+sB5diVRXEJBa TsfAL87WzZ+Ongz0RX3dUf5PY2JpnFOgZPdejWmAJL1OewMDo666XP/WlE+N3vq0nYmH fBPg== X-Gm-Message-State: AKaTC03CiScXlMsJOj8cICk90K2SuGjlBvJ0vpdYlId0Nmt5on+PgSwCUrXuuL5UmiU02w== X-Received: by 10.99.222.85 with SMTP id y21mr6642711pgi.119.1479919326622; Wed, 23 Nov 2016 08:42:06 -0800 (PST) Received: from roar.au.ibm.com (27-33-21-189.tpgi.com.au. [27.33.21.189]) by smtp.gmail.com with ESMTPSA id o26sm53959762pfk.91.2016.11.23.08.42.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 23 Nov 2016 08:42:06 -0800 (PST) From: Nicholas Piggin To: Michal Marek Cc: Nicholas Piggin , linux-kbuild@vger.kernel.org Subject: [PATCH 2/7] kbuild: thin archives for multi-y targets Date: Thu, 24 Nov 2016 03:41:38 +1100 Message-Id: <20161123164143.16839-3-npiggin@gmail.com> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20161123164143.16839-1-npiggin@gmail.com> References: <20161123164143.16839-1-npiggin@gmail.com> Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP THIN_ARCHIVES builds archives for built-in.o targets, have it build multi-y targets as archives as well. This saves another ~15% of the size of intermediate artifacts in the build tree. After this patch, the linker is only used in final link, and special cases like vdsos. Signed-off-by: Nicholas Piggin --- scripts/Makefile.build | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 7675d11..41d2901 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -517,11 +517,18 @@ $($(subst $(obj)/,,$(@:.o=-objs))) \ $($(subst $(obj)/,,$(@:.o=-y))) \ $($(subst $(obj)/,,$(@:.o=-m)))), $^) -quiet_cmd_link_multi-y = LD $@ -cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secanalysis) +cmd_link_multi-link = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secanalysis) + +ifdef CONFIG_THIN_ARCHIVES + quiet_cmd_link_multi-y = AR $@ + cmd_link_multi-y = rm -f $@; $(AR) rcST$(KBUILD_ARFLAGS) $@ $(link_multi_deps) +else + quiet_cmd_link_multi-y = LD $@ + cmd_link_multi-y = $(cmd_link_multi-link) +endif quiet_cmd_link_multi-m = LD [M] $@ -cmd_link_multi-m = $(cmd_link_multi-y) +cmd_link_multi-m = $(cmd_link_multi-link) $(multi-used-y): FORCE $(call if_changed,link_multi-y)