From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF552C43603 for ; Wed, 11 Dec 2019 18:49:17 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6FD57206A5 for ; Wed, 11 Dec 2019 18:49:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6FD57206A5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C3D8A6B3376; Wed, 11 Dec 2019 13:48:53 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B7E896B3378; Wed, 11 Dec 2019 13:48:53 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0EF486B3377; Wed, 11 Dec 2019 13:48:52 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0161.hostedemail.com [216.40.44.161]) by kanga.kvack.org (Postfix) with ESMTP id 84A766B336D for ; Wed, 11 Dec 2019 13:48:52 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 46C4482499A8 for ; Wed, 11 Dec 2019 18:48:52 +0000 (UTC) X-FDA: 76253747304.02.waves05_132e7a2d27462 X-HE-Tag: waves05_132e7a2d27462 X-Filterd-Recvd-Size: 2930 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Wed, 11 Dec 2019 18:48:51 +0000 (UTC) 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 091551045; Wed, 11 Dec 2019 10:40:41 -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 4461F3F6CF; Wed, 11 Dec 2019 10:40:39 -0800 (PST) From: Catalin Marinas To: linux-arm-kernel@lists.infradead.org Cc: Will Deacon , Marc Zyngier , Vincenzo Frascino , Szabolcs Nagy , Richard Earnshaw , Kevin Brodsky , Andrey Konovalov , linux-mm@kvack.org, linux-arch@vger.kernel.org, Masahiro Yamada , linux-kbuild@vger.kernel.org, Vladimir Murzin Subject: [PATCH 02/22] kbuild: Add support for 'as-instr' to be used in Kconfig files Date: Wed, 11 Dec 2019 18:40:07 +0000 Message-Id: <20191211184027.20130-3-catalin.marinas@arm.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191211184027.20130-1-catalin.marinas@arm.com> References: <20191211184027.20130-1-catalin.marinas@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 :=3D $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=3D1) Add the 'as-instr' option so that it can be used in Kconfig directly: def_bool $(as-instr,.arch_extension lse) Cc: Masahiro Yamada Cc: linux-kbuild@vger.kernel.org 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 =3D $(success,$(CC) -Werror $(CLANG_FLAGS) $= (1) -E -x c /dev/null -o /de # Return y if the linker supports , n otherwise ld-option =3D $(success,$(LD) -v $(1)) =20 +# $(as-instr,) +# Return y if the assembler supports , n otherwise +as-instr =3D $(success,printf "%b\n" "$(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)