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=-21.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 1291CC11F65 for ; Wed, 30 Jun 2021 12:15:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECD8C61624 for ; Wed, 30 Jun 2021 12:15:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234573AbhF3MR2 (ORCPT ); Wed, 30 Jun 2021 08:17:28 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:43462 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S234388AbhF3MRZ (ORCPT ); Wed, 30 Jun 2021 08:17:25 -0400 X-UUID: 16c61951859943f39f6e4523d853573e-20210630 X-UUID: 16c61951859943f39f6e4523d853573e-20210630 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1114671309; Wed, 30 Jun 2021 20:14:54 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 30 Jun 2021 20:14:52 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 30 Jun 2021 20:14:52 +0800 From: Lecopzer Chen To: , , CC: , , , , , Lecopzer Chen Subject: [PATCH 2/2] Kbuild: lto: add make version checking Date: Wed, 30 Jun 2021 20:14:36 +0800 Message-ID: <20210630121436.19581-3-lecopzer.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210630121436.19581-1-lecopzer.chen@mediatek.com> References: <20210630121436.19581-1-lecopzer.chen@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org LTO with MODVERSION will fail in generating correct CRC because the makefile rule doesn't work for make with version 3.8X.[1] Thus we need to check make version during selecting on LTO Kconfig. and the suitable version should be 4.2(40200) which release in 2016[2]. [1] https://lore.kernel.org/lkml/20210616080252.32046-1-lecopzer.chen@mediatek.com/ [2] https://ftp.gnu.org/gnu/make/ Signed-off-by: Lecopzer Chen --- arch/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/Kconfig b/arch/Kconfig index c45b770d3579..1571957bade5 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -632,6 +632,7 @@ config HAS_LTO_CLANG def_bool y # Clang >= 11: https://github.com/ClangBuiltLinux/linux/issues/510 depends on CC_IS_CLANG && CLANG_VERSION >= 110000 && LD_IS_LLD && AS_IS_LLVM + depends on MAKE_VERSION_INT >= 40200 depends on $(success,$(NM) --help | head -n 1 | grep -qi llvm) depends on $(success,$(AR) --help | head -n 1 | grep -qi llvm) depends on ARCH_SUPPORTS_LTO_CLANG -- 2.18.0