From patchwork Tue Mar 17 12:22:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincenzo Frascino X-Patchwork-Id: 11442815 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 818F76CA for ; Tue, 17 Mar 2020 12:30:20 +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 558F320757 for ; Tue, 17 Mar 2020 12:30:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="sKWlAqAB" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 558F320757 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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: 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: List-Owner; bh=5q1Qp1lUSHNCjvd6UOo9I1mndOz+//4Jnc74mGWUd8E=; b=sKWlAqABzGS5lY qlzl2z4EdPOwYDMdOZw/PlOM3xq9Td11cof6n9VJPKfB5KZDAvHIWqMY6zzREJyHtXK7fgK3Jh7J2 21Nf+0fGr2bkA3eXd4ftN3+/RB0tmTpEo9OTYFbHMa4Usf3xY7DaaCv8me8t5tnr5/3771St3FxHe sSZSFhIPM/ZQj+VxjvaCqegwQ0D+g3dAv59yMAa2qIOIPpeqppLzpw8MDifwUaxvIOEozTm0spS6D LQmEyejtDHShddTZrKh6V5p99pNUhK6yYCs1ixyphaxiaDq4hbkJG1RBbKwNGJ5ax9hn4zxI/2a+Q sSXjH6WXRUs7TzrlHdUw==; 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 1jEBMQ-0006pK-42; Tue, 17 Mar 2020 12:30:18 +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 1jEBGZ-0006tL-Uz for linux-arm-kernel@lists.infradead.org; Tue, 17 Mar 2020 12:24:20 +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 876C0FEC; Tue, 17 Mar 2020 05:24:15 -0700 (PDT) Received: from e119884-lin.cambridge.arm.com (e119884-lin.cambridge.arm.com [10.1.196.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 5CCB13F534; Tue, 17 Mar 2020 05:24:12 -0700 (PDT) From: Vincenzo Frascino To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, linux-mips@vger.kernel.org, x86@kernel.org Subject: [PATCH v4 26/26] arm64: vdso32: Enable Clang Compilation Date: Tue, 17 Mar 2020 12:22:20 +0000 Message-Id: <20200317122220.30393-27-vincenzo.frascino@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200317122220.30393-1-vincenzo.frascino@arm.com> References: <20200317122220.30393-1-vincenzo.frascino@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200317_052416_095827_7A32E053 X-CRM114-Status: UNSURE ( 8.58 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.3 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: Mark Rutland , Nick Desaulniers , Dmitry Safonov <0x7f454c46@gmail.com>, Kees Cook , Arnd Bergmann , Stephen Boyd , Catalin Marinas , Will Deacon , Russell King , Mark Salyzyn , Paul Burton , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Marc Zyngier , Will Deacon , Thomas Gleixner , Vincenzo Frascino , Peter Collingbourne , Nathan Chancellor , Andrei Vagin Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Enable Clang Compilation for the vdso32 library. Cc: Catalin Marinas Cc: Will Deacon Reviewed-by: Nathan Chancellor Tested-by: Nathan Chancellor # build Acked-by: Catalin Marinas Signed-off-by: Vincenzo Frascino --- arch/arm64/kernel/vdso32/Makefile | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile index 04df57b43cb1..3964738ebbde 100644 --- a/arch/arm64/kernel/vdso32/Makefile +++ b/arch/arm64/kernel/vdso32/Makefile @@ -10,7 +10,18 @@ include $(srctree)/lib/vdso/Makefile # Same as cc-*option, but using CC_COMPAT instead of CC ifeq ($(CONFIG_CC_IS_CLANG), y) +COMPAT_GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE_COMPAT)elfedit)) +COMPAT_GCC_TOOLCHAIN := $(realpath $(COMPAT_GCC_TOOLCHAIN_DIR)/..) + +CC_COMPAT_CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE_COMPAT:%-=%)) +CC_COMPAT_CLANG_FLAGS += --prefix=$(COMPAT_GCC_TOOLCHAIN_DIR) +CC_COMPAT_CLANG_FLAGS += -no-integrated-as -Qunused-arguments +ifneq ($(COMPAT_GCC_TOOLCHAIN),) +CC_COMPAT_CLANG_FLAGS += --gcc-toolchain=$(COMPAT_GCC_TOOLCHAIN) +endif + CC_COMPAT ?= $(CC) +CC_COMPAT += $(CC_COMPAT_CLANG_FLAGS) else CC_COMPAT ?= $(CROSS_COMPILE_COMPAT)gcc endif