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=-16.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 EA37DC282C2 for ; Thu, 7 Feb 2019 22:02:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B734D21721 for ; Thu, 7 Feb 2019 22:02:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="NjzqXAPv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727083AbfBGWCb (ORCPT ); Thu, 7 Feb 2019 17:02:31 -0500 Received: from mail-it1-f202.google.com ([209.85.166.202]:41080 "EHLO mail-it1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726576AbfBGWCa (ORCPT ); Thu, 7 Feb 2019 17:02:30 -0500 Received: by mail-it1-f202.google.com with SMTP id 71so2301150ita.6 for ; Thu, 07 Feb 2019 14:02:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=MqLuibBHajEelET2gmxRQFU5+ervUm+M6PMMM0jIz+k=; b=NjzqXAPv2Gw8MbNmaKl8Irqy4dtdTyhJaKdWzaw4RP1C7HT2CI16fy8ualj7GapIKe xUFEeAmjG0112J8IFKsNdet7r3fKZ0/bKmkZJHuesmNFEmJbrRdmF5gK4Gn3ciG/rDEP ZWZ2JVO7WQqtuTlFrvinw01+LGNXX2gGOvPmc5TDylF1MGJNGuX8jVtQt9NbjtztdFGX uBhO1DP9kUuWcl7gGnTRZH9wV0K0p7K6Q2GgsBnlsS2NMW8P/+Wpk+PbF2ld1SxoojoB fX9y4ed58VzKk/6+uFwRM5nsRpzZAJ5V5vQB2Bs9C+nm8a//QWSJ+dqZRKHF4Wc3jB34 yM0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=MqLuibBHajEelET2gmxRQFU5+ervUm+M6PMMM0jIz+k=; b=VqC6P0XE2H7WL2XaBV7BvOSdyXLuW1EuGJqJKjPJRGsVYad5YsWi2gZv5vNXnvI4Tl lN88DXSeI4q/9zPiy3DOh436DhjK/wRaw9mkc5iOUTFTJXPCKrLew85tHrqxFJbjJmS6 rcFTVtHdjv5x5zMKyHCtxRCRoiYA/CTMzsyw8THuFKWVl/xAGbPfZtzNiuyRTmkoxaOq EjBS4kdZeR6ceB+Jz63PVAp7wjEpSuzMIuTiDIO/lFfK7NkDS1chUf4aQbARXec49IQx IoRhrO4y0dOEitBm8ukbEPk7hvVHSLYjgMJu5A4Gy9YqhdsCam3GCq6lpKXvTKDkiYjd wDRQ== X-Gm-Message-State: AHQUAubhyl2WiKqakY1cG+sD74C6eHWB/21UeD2hTOynoNc0x21D7hxt wFxmAPjdt1EXQMm8iKNEvUIvDM/VRFTGJkVD6P0= X-Google-Smtp-Source: AHgI3IbzAB08Nd8K+rw+XS37VTuAC7piX0ErADL9L1+p2KSX5VtiIPHG/x6FtX4a94kQGQFtcnBDnQq+Yp+9LGZ8bvg= X-Received: by 2002:a24:5e90:: with SMTP id h138mr7648078itb.27.1549576950026; Thu, 07 Feb 2019 14:02:30 -0800 (PST) Date: Thu, 7 Feb 2019 14:01:49 -0800 Message-Id: <20190207220155.81351-1-ndesaulniers@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.20.1.791.gb4d0f1c61a-goog Subject: [PATCH 1/4] init/Kconfig: add config support for detecting linker From: ndesaulniers@google.com To: yamada.masahiro@socionext.com Cc: Nick Desaulniers , Nathan Chancellor , Sami Tolvanen , Andrew Morton , "Peter Zijlstra (Intel)" , Johannes Weiner , Kees Cook , Dominik Brodowski , Nicholas Piggin , Mathieu Desnoyers , Vasily Gorbik , Adrian Reber , Richard Guy Briggs , linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Similar to how we differentiate between CONFIG_CC_IS_GCC and CONFIG_CC_IS_CLANG, add CONFIG_LD_IS_BFD, CONFIG_LD_IS_GOLD, and CONFIG_LD_IS_LLD. This simiplifies patches to Makefiles that need to do different things for different linkers. Cc: Nathan Chancellor Cc: Sami Tolvanen Signed-off-by: Nick Desaulniers --- init/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/init/Kconfig b/init/Kconfig index c9386a365eea..b6046dcf7794 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -26,6 +26,15 @@ config CLANG_VERSION config CC_HAS_ASM_GOTO def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC)) +config LD_IS_BFD + def_bool $(success,$(LD) --version | head -n 1 | grep -q 'GNU ld') + +config LD_IS_GOLD + def_bool $(success,$(LD) --version | head -n 1 | grep -q 'GNU gold') + +config LD_IS_LLD + def_bool $(success,$(LD) --version | head -n 1 | grep -q 'LLD') + config CONSTRUCTORS bool depends on !UML -- 2.20.1.791.gb4d0f1c61a-goog