From patchwork Fri Mar 16 07:37:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 131913 Delivered-To: patch@linaro.org Received: by 10.46.84.17 with SMTP id i17csp411657ljb; Fri, 16 Mar 2018 00:39:19 -0700 (PDT) X-Google-Smtp-Source: AG47ELvmACjn1fOWtjkrzK6QUnWFF2IT8d0cikzAIZIqOK86NtHq/QFU07Krs95XsZHSq31SN7u8 X-Received: by 2002:a17:902:a612:: with SMTP id u18-v6mr1038547plq.92.1521185959102; Fri, 16 Mar 2018 00:39:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1521185959; cv=none; d=google.com; s=arc-20160816; b=wZCZCvsAKuHvoooOTOL3r7xGDOsVbN1+wej03qiPbu9mEn0IiMnhu27fg9zJc4KLHA QvMNmjNCVMGxTDlgEx5i3G1QS1I//7dgid4fGKBFcdeBX4gGWVR6DlKY5w5WCY3R01S7 A4XTcvVVGf0Vh67eTdgtE4Zk9ozqqFIXPN8eFlbrvFC5uQWk6JFx962J+rct9y8QIrQB 278ZeIbP5OPSMcLUjqOHdAf6BXsctd2yqWBDvwNu9lixnmc7VzowXsl/dRlyDSwnUWxY B55rcFre5b/vU7WTXsG6fGciEPstHs2MpGiEioJ/4GM+xQZ2tgAZmRmP6b7VBaSZUNyj hVrQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature:dkim-filter :arc-authentication-results; bh=i3k286/oEU6Y6wspvx0LQAGTckY2xv3E2keBIxNEWcI=; b=RB2dkBOiNk792s9xYTSEwZcEj7gwImhvM41a3sSkwfRt8T0iUHaKvT08qJe1Sa2IP0 e7nAmz54Uj8tmy4Mumcwutuebp8nmtgtTPOqHWam+HBWO1EccfY4mMh8GRy6qr3oaBVK gCMTHpshVkVuzjCSs63peVbEmsCbwuxsZuwVucwmWT0S7Gy06hemlrmdXvFjAHG0L6JE BPUCACPTUy8PiitnM/mJXKDy21h5tbKopT9Yv4oo76p9QhUnQxGcLGHf4kHlXTSKWvb8 E7SMTPQkLS0FFu7NTcbuVTm6tNjsC48cqJz0ecSZ6YPf6qoP8X8ua/dFWbujK4NZi8dD rD3g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@nifty.com header.s=dec2015msa header.b=1gYBTZwI; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d16-v6si5596864pll.504.2018.03.16.00.39.18; Fri, 16 Mar 2018 00:39:19 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@nifty.com header.s=dec2015msa header.b=1gYBTZwI; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753257AbeCPHhp (ORCPT + 28 others); Fri, 16 Mar 2018 03:37:45 -0400 Received: from conuserg-08.nifty.com ([210.131.2.75]:20643 "EHLO conuserg-08.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750847AbeCPHhn (ORCPT ); Fri, 16 Mar 2018 03:37:43 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-08.nifty.com with ESMTP id w2G7bOa4029139; Fri, 16 Mar 2018 16:37:25 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-08.nifty.com w2G7bOa4029139 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1521185846; bh=i3k286/oEU6Y6wspvx0LQAGTckY2xv3E2keBIxNEWcI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1gYBTZwICLsUQ7cfiOf72OzDpMkFP18xqWkOVqh7xpbdA42vKpXzJNgxLV6yRMLEE l2WD/TMvQTfD8t7cIhQKKn6pnrTfghEAK9NKUSJrDDJpH45pbIjpNQ6C1/V8Sfg8d/ Egamz0afZRbRsn3aBZegf1OuH9AFdUxVjrXuQ1nwsdyk45iAPxViX6kcbxk1SNzHH4 akHJIg2baeWTz7k7QTsKxlrHfVDbSZIJ7DiZHSsmR3AIp0VcYXZKga6UgYPPEsE1H8 75L6YjOM3nnHw/qxdgkw/s3ltPigDhQUt2xooJo6wmxxeH8MfGqYEBFWh1/QlXtpMB 5wJq+DDskiN7Q== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: Michal Marek , Nicolas Pitre , linux-kernel@vger.kernel.org, Masahiro Yamada Subject: [PATCH v4 1/7] kbuild: clear LDFLAGS in the top Makefile Date: Fri, 16 Mar 2018 16:37:09 +0900 Message-Id: <1521185836-19120-2-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521185836-19120-1-git-send-email-yamada.masahiro@socionext.com> References: <1521185836-19120-1-git-send-email-yamada.masahiro@socionext.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently LDFLAGS is not cleared, so same flags are accumulated in LDFLAGS when the top Makefile is recursively invoked. I found unneeded rebuild for ARCH=arm64 when CONFIG_TRIM_UNUSED_KSYMS is enabled. If include/generated/autoksyms.h is updated, the top Makefile is recursively invoked, then arch/arm64/Makefile adds one more '-maarch64linux'. Due to the command line change, modules are rebuilt needlessly. Signed-off-by: Masahiro Yamada Acked-by: Nicolas Pitre --- Changes in v4: None Changes in v3: None Changes in v2: None Makefile | 1 + 1 file changed, 1 insertion(+) -- 2.7.4 diff --git a/Makefile b/Makefile index d9bb6dd6..ac8755d 100644 --- a/Makefile +++ b/Makefile @@ -437,6 +437,7 @@ KBUILD_CFLAGS_KERNEL := KBUILD_AFLAGS_MODULE := -DMODULE KBUILD_CFLAGS_MODULE := -DMODULE KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds +LDFLAGS := GCC_PLUGINS_CFLAGS := export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC