From patchwork Wed Jan 15 11:30:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Catalin Marinas X-Patchwork-Id: 11333801 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 43F8113B4 for ; Wed, 15 Jan 2020 11:30:38 +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 0E2C424671 for ; Wed, 15 Jan 2020 11:30:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ozRkVuSK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0E2C424671 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=u54yBw0GImLag6zj61ZMPb4rrdbMPewTp/fBLyQNyj0=; b=ozRkVuSK/t8oMV bN9o9aWwJ8yqORGucFQ3XfSxlK3T6T5euIOAX8UpW+sYKM2h+YlUoD90IHFpleO7Uo+ZBNn1U7Dmo U1LII1+5MgZFoCQtIOQuXfoQ9Ao76uc/DlJFZgF7nb420bSmLLQ+bV+JtnAAG0tNCKsNLZHHy+uB8 RmLz/3Z5T2UdeZEJxuRnn9NCz2BS4G6qR61hSOgFOzl9YZW/r5zWevqPvBp62tfV7+4ukOl36v7NP E/QS9+qurd4A9No4tmjMga6mhApxZQujIkR9EZKy1P2Tnf3z+E12gO203/UTklUBOuuoyfNfo83Hr 0sZBatBsw9l2XB6XvgQw==; 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 1irgsd-0001n5-U2; Wed, 15 Jan 2020 11:30:35 +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 1irgsI-0001Yj-PS for linux-arm-kernel@lists.infradead.org; Wed, 15 Jan 2020 11:30:21 +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 0B6C11007; Wed, 15 Jan 2020 03:30:14 -0800 (PST) Received: from arrakis.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5A4E43F6C4; Wed, 15 Jan 2020 03:30:13 -0800 (PST) From: Catalin Marinas To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/2] kbuild: Add support for 'as-instr' to be used in Kconfig files Date: Wed, 15 Jan 2020 11:30:07 +0000 Message-Id: <20200115113008.3334-2-catalin.marinas@arm.com> X-Mailer: git-send-email 2.25.0.rc1 In-Reply-To: <20200115113008.3334-1-catalin.marinas@arm.com> References: <20200115113008.3334-1-catalin.marinas@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200115_033014_891679_A204F9AF X-CRM114-Status: UNSURE ( 9.57 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an 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: Vladimir Murzin , Will Deacon Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Similar to 'cc-option' or 'ld-option', it is occasionally necessary to check whether the assembler supports certain ISA extensions. In the arm64 code we currently do this in Makefile with an additional define: lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1) Add the 'as-instr' option so that it can be used in Kconfig directly: def_bool $(as-instr,.arch_extension lse) Acked-by: Masahiro Yamada Reviewed-by: Vladimir Murzin Signed-off-by: Catalin Marinas --- scripts/Kconfig.include | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include index d4adfbe42690..9d07e59cbdf7 100644 --- a/scripts/Kconfig.include +++ b/scripts/Kconfig.include @@ -31,6 +31,10 @@ cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -E -x c /dev/null -o /de # Return y if the linker supports , n otherwise ld-option = $(success,$(LD) -v $(1)) +# $(as-instr,) +# Return y if the assembler supports , n otherwise +as-instr = $(success,printf "%b\n" "$(1)" | $(CC) $(CLANG_FLAGS) -c -x assembler -o /dev/null -) + # check if $(CC) and $(LD) exist $(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found) $(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)