From patchwork Thu Jan 23 10:20:37 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: 11347227 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 8E0A714B4 for ; Thu, 23 Jan 2020 10:22:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 765322467B for ; Thu, 23 Jan 2020 10:22:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728901AbgAWKWE (ORCPT ); Thu, 23 Jan 2020 05:22:04 -0500 Received: from foss.arm.com ([217.140.110.172]:37276 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726099AbgAWKWD (ORCPT ); Thu, 23 Jan 2020 05:22:03 -0500 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 503CFFEC; Thu, 23 Jan 2020 02:22:03 -0800 (PST) Received: from a075553-lin.blr.arm.com (a075553-lin.blr.arm.com [10.162.17.79]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E8FB13F6C4; Thu, 23 Jan 2020 02:21:58 -0800 (PST) From: Amit Daniel Kachhap To: linux-arm-kernel@lists.infradead.org Cc: Mark Rutland , Kees Cook , Ard Biesheuvel , Catalin Marinas , Suzuki K Poulose , Will Deacon , Ramana Radhakrishnan , Kristina Martsenko , Dave Martin , Amit Daniel Kachhap , James Morse , Vincenzo Frascino , Mark Brown , Vincenzo Frascino , Masahiro Yamada , linux-kbuild@vger.kernel.org Subject: [PATCH v4 15/17] kconfig: Add support for 'as-option' Date: Thu, 23 Jan 2020 15:50:37 +0530 Message-Id: <1579774839-19562-16-git-send-email-amit.kachhap@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1579774839-19562-1-git-send-email-amit.kachhap@arm.com> References: <1579774839-19562-1-git-send-email-amit.kachhap@arm.com> Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org From: Vincenzo Frascino Currently kconfig does not have a feature that allows to detect if the used assembler supports a specific compilation option. Introduce 'as-option' to serve this purpose in the context of Kconfig: config X def_bool $(as-option,...) Cc: Masahiro Yamada Cc: linux-kbuild@vger.kernel.org Acked-by: Masahiro Yamada Signed-off-by: Vincenzo Frascino Signed-off-by: Amit Daniel Kachhap --- Changes since v3: *) Changed the assembler option to -c instead of earlier -E. *) Added Masahiro Acked-by. scripts/Kconfig.include | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include index d4adfbe..c4b4424 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-option,) +# Return y if the assembler supports , n otherwise +as-option = $(success, $(CC) $(CLANG_FLAGS) $(1) -c -x assembler /dev/null -o /dev/zero) + # 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)