From patchwork Mon Mar 30 11:41:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Daniel Kachhap X-Patchwork-Id: 11465335 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 91E3B13A4 for ; Mon, 30 Mar 2020 11:42:07 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 694FD206DB for ; Mon, 30 Mar 2020 11:42:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Dw8A96j+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 694FD206DB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=aNwNeb24GRpjCCYr/m8swlg4I4LVR0KkXG4+QwDW2sE=; b=Dw8 A96j+sBcstyMgKZ5BgkIzmPbupmhp725yyPEQ5eABA7qdbqBCehJXTNeCe4lQ1sgkIBQThS+IbC9i y+fuS6u5JJPLAR0l4mqyFES2aXLhrfA9wMT0o0a2b6FKDvA+IQkGXgy/hcPtNccDZgV5tsvF8ZONB Awqq2/0sqxT7NqzynHPT41FUAOPnYDVuMspE6xGdR54MYBt5T7cUXxmG5Za8ROWQ8MjNHAOdWOsAF e+AxwnEQbhu6N//lEF4t/Hx8oVjmsQ3Frb2IEqiiqmWDZ5nfEn/+rdT1oYwCU1MRX/Cgov2508aZP vO0ehz4m9FCiBi63LD8umtlfE/F6yNg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jIsnt-0004Tr-Ja; Mon, 30 Mar 2020 11:42:05 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jIsnr-0004Sp-3a for linux-arm-kernel@lists.infradead.org; Mon, 30 Mar 2020 11:42:04 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 484FD31B; Mon, 30 Mar 2020 04:42:00 -0700 (PDT) Received: from a075553-lin.blr.arm.com (a075553-lin.blr.arm.com [10.162.17.24]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5997C3F52E; Mon, 30 Mar 2020 04:41:58 -0700 (PDT) From: Amit Daniel Kachhap To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/2] init/kconfig: Add LD_VERSION Kconfig Date: Mon, 30 Mar 2020 17:11:38 +0530 Message-Id: <1585568499-21585-1-git-send-email-amit.kachhap@arm.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200330_044203_198974_78D259D9 X-CRM114-Status: UNSURE ( 9.31 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Amit Daniel Kachhap , Catalin Marinas , Vincenzo Frascino , Will Deacon , linux-kernel@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This option can be used in Kconfig files to compare the ld version and enable/disable incompatible config options if required. This option is used in the subsequent patch along with GCC_VERSION to filter out an incompatible feature. Signed-off-by: Amit Daniel Kachhap --- Changes since v1: * None. This patch series is based on Linux arm64 for-next tree [1]. More details of this work can be found in the thread [2]. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core [2]: http://lists.infradead.org/pipermail/linux-arm-kernel/2020-March/720257.html init/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/init/Kconfig b/init/Kconfig index 452bc18..68ddbcd 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -17,6 +17,10 @@ config GCC_VERSION default $(shell,$(srctree)/scripts/gcc-version.sh $(CC)) if CC_IS_GCC default 0 +config LD_VERSION + int + default $(shell,$(LD) --version | $(srctree)/scripts/ld-version.sh) + config CC_IS_CLANG def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)