From patchwork Wed Mar 14 16:44:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 131662 Delivered-To: patch@linaro.org Received: by 10.80.210.197 with SMTP id q5csp395397edg; Wed, 14 Mar 2018 09:45:21 -0700 (PDT) X-Google-Smtp-Source: AG47ELtq3I+L7klXuqxCKieRaafA/tCeAGXDI+MeKOjMLiHGiPDfLTFPEK/ClZVZLOZMDCbiOucx X-Received: by 10.101.88.130 with SMTP id d2mr3615089pgu.383.1521045921639; Wed, 14 Mar 2018 09:45:21 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1521045921; cv=none; d=google.com; s=arc-20160816; b=vrGWRgOCkY+x/TvVyQf2kXuMI1InhbtwIzHfX5Gd9SdJM9vz6hfmkK8ZvcJ3RPx8uX UbPDj1eaa+T3HHxtY7TAqAndciSDa5ESgPXIgey3eisBz+JIlD9+nzBPh5UwpDv4Wwjs ZlW+FTWVsprPQxt9Y8y1XI2Aneomh+tZXHvSDrJlHDKux6ilsfyBQOZpx+eIRIaZcxyr xmLNvpks+VcF5/qtPHH8ubUBsoznUFfoBNUEhJ9DpIhL0cPbL2MrCCATh9qkZ+xr1oGt bBJUvmwUQgqSIqTiyJilhhH8qhF7ZdY3uxtDhbpsyI2DzVYlGhxTr4XkhLY6RtR+E3E8 mKRw== 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=rZdk33WL6Gk9eT7mvhU50hhZ8Pd9TQR1stfGTmFlPRo=; b=Gr33w4VFfFwL2bSME/SI89YVxZP685Xi//UasSNxUxn/tbVlOU2pH9wHDFMLt73Rmz zBpMB72dzoiaKd8shHOjrjL2DtwmzspmvDelYOPQCqqHXI7rYMlJeBaT/x6Zrxodfn5a iJfFEkcAGibIflEEQIRFrEglcof6/MxN8XSJUBGeNvsEjQZOX0XrSKVIYR3Pi4KT5qTY R6JuS2zt++HUEUtcpk5x4EMMPVoTLA3AFIeg4VmZP8plvtl2a4H3fvLHS7sN2m7ek/J1 C0VWIqNkRprcT870WH7pCcU0V9IPBWjB1/E8550pYf4M0QAlEdhOSTbrdXQmFC3Zvcex vuqQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@nifty.com header.s=dec2015msa header.b=0ebjLzbW; 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 u23si2043271pgv.706.2018.03.14.09.45.21; Wed, 14 Mar 2018 09:45:21 -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=0ebjLzbW; 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 S1752432AbeCNQpT (ORCPT + 28 others); Wed, 14 Mar 2018 12:45:19 -0400 Received: from conuserg-07.nifty.com ([210.131.2.74]:38070 "EHLO conuserg-07.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752081AbeCNQou (ORCPT ); Wed, 14 Mar 2018 12:44:50 -0400 Received: from grover.sesame (FL1-125-199-20-195.osk.mesh.ad.jp [125.199.20.195]) (authenticated) by conuserg-07.nifty.com with ESMTP id w2EGiSdQ001049; Thu, 15 Mar 2018 01:44:29 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-07.nifty.com w2EGiSdQ001049 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1521045869; bh=rZdk33WL6Gk9eT7mvhU50hhZ8Pd9TQR1stfGTmFlPRo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0ebjLzbWpkhk1aTwcjaZl+QySTzU4KM8t+kxp3KcHLj0p5jKwU233n7kJNjpICaWu 1F/QfvQbZpWNHCqGylJb/ZdB3p0LXA+tVJ8Hjez7ZkCdXTAshIz6rnOv+djKGycX9Q VOsGg9ih9ZXBQ4uwHYgptQ3B4LxLY2BzuntxpNUV/MdbXlJzKHvn/UCm4f04SXup7t ynN7UCFvPLsAD6T22yfqK1fe1UhThprsButjMSRydCeMIKfDf+HRxGHr/tEvuFpSQG yYbpwmDy2alQLIKMnCO51vp7hwXpyb7qAt0vlZuVi79iUWBvg0dsJ9BDaJMd4z96+S FJ9Fj5GgDCUyw== X-Nifty-SrcIP: [125.199.20.195] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: Nicolas Pitre , Jarod Wilson , Prarit Bhargava , Masahiro Yamada , Michal Marek , linux-kernel@vger.kernel.org Subject: [PATCH 1/7] kbuild: clear LDFLAGS in the top Makefile Date: Thu, 15 Mar 2018 01:44:15 +0900 Message-Id: <1521045861-22418-2-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521045861-22418-1-git-send-email-yamada.masahiro@socionext.com> References: <1521045861-22418-1-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 --- Makefile | 1 + 1 file changed, 1 insertion(+) -- 2.7.4 diff --git a/Makefile b/Makefile index e02d092..5eb5d9d 100644 --- a/Makefile +++ b/Makefile @@ -426,6 +426,7 @@ 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