From patchwork Thu Apr 23 17:18:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nathan Chancellor X-Patchwork-Id: 11506105 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 301EB1667 for ; Thu, 23 Apr 2020 17:18:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1744320857 for ; Thu, 23 Apr 2020 17:18:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="kI4TGFfZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729890AbgDWRS2 (ORCPT ); Thu, 23 Apr 2020 13:18:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729873AbgDWRS2 (ORCPT ); Thu, 23 Apr 2020 13:18:28 -0400 Received: from mail-ot1-x343.google.com (mail-ot1-x343.google.com [IPv6:2607:f8b0:4864:20::343]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0EA6AC09B042; Thu, 23 Apr 2020 10:18:27 -0700 (PDT) Received: by mail-ot1-x343.google.com with SMTP id j4so7372806otr.11; Thu, 23 Apr 2020 10:18:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ox1WLU3YUxcP2R/GVPO/gQRlaX6uwFvhGgYlvzhom8U=; b=kI4TGFfZQrCLM1ubOC/N78oRrvYMQ6BxrVgdxTtoQslDCYMJE3n/662x/Xd0mwXm5G tHiz3Y2sDzdZLmBQUXVx747nAIPALN8pY6wwvpEmyhySXPySpmV97OeZ0tHN/pQPx6an X3BKdzft+rAeeWqIlol73cmETF+wXRXgwrM+SnWCFN+N3XP/TkJfIVxy4RoYkAfjzG/e jTaMG91B0QMA5hGONLzDgaBIPL/0BWBHPobB7zZj8JR0HEZBN6hQIoCClXHlULCFombJ H1yeds+T43FcDhQ47sgLlA6pNXx2Ey8RkOXhG80tR2YQkCGw7DMOxInDns3yzEY/UaSg rNSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ox1WLU3YUxcP2R/GVPO/gQRlaX6uwFvhGgYlvzhom8U=; b=jNh7wDHUpxUPAJgasFqjn4dKhAxYGu5tPs+E3HTtEyi12+k3FFVJ0XVrAD6nlh36lQ y9xbANvODLJoRLbVbQvO7kk6tuq7oKMkm2Gxh5q1fijpIS8AMhmt8wKU4l+TbCbZi1Xj nKng9J+lCpGiqdUnibG6cMLnZ5qElR54ufOOOsqeSQMqEfzAKXThNtqBYF/HhODY6hmT hMm/cioDE0BYsA86JlaMLkfhFZKdq0MSSiOD3+wjspFahJ46GOghVDtKwWhxZAq8Ssmb w+mGOHEFKxHw6Xf8CZTWU5FjOuZAxPoDnpzMFLNGcgypg0A3MMq6TpZ3dABv1F05xlJa 2DaQ== X-Gm-Message-State: AGi0PubjBLoXEXr9eHo6K94/s11r2Jv02U//fNmvmavwXu/QK8alY31G uEsB00ldsMAtnt0PpGtZTm8PcS7DAbs= X-Google-Smtp-Source: APiQypJsLrMoxkPad47LLuoBzFyGFl+3ifX7fd/TyQ5Wz3cRz5hiX82bq9xWH+v1uQTO6Ss1dknxVg== X-Received: by 2002:aca:6002:: with SMTP id u2mr3861263oib.45.1587662306403; Thu, 23 Apr 2020 10:18:26 -0700 (PDT) Received: from localhost.localdomain ([2604:1380:4111:8b00::1]) by smtp.gmail.com with ESMTPSA id y5sm746726otq.38.2020.04.23.10.18.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Apr 2020 10:18:25 -0700 (PDT) From: Nathan Chancellor To: Thomas Bogendoerfer , Masahiro Yamada Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, linux-kbuild@vger.kernel.org, Nick Desaulniers , Sami Tolvanen , Dmitry Golovin , Sedat Dilek , Nathan Chancellor Subject: [PATCH v3 1/4] kbuild: add CONFIG_LD_IS_LLD Date: Thu, 23 Apr 2020 10:18:04 -0700 Message-Id: <20200423171807.29713-1-natechancellor@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200419202128.20571-1-natechancellor@gmail.com> References: <20200419202128.20571-1-natechancellor@gmail.com> MIME-Version: 1.0 X-Patchwork-Bot: notify Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org From: Sami Tolvanen Similarly to the CC_IS_CLANG config, add LD_IS_LLD to avoid GNU ld specific logic such as ld-version or ld-ifversion and gain the ability to select potential features that depend on the linker at configuration time such as LTO. Signed-off-by: Sami Tolvanen Acked-by: Masahiro Yamada [nc: Reword commit message] Signed-off-by: Nathan Chancellor --- v2 -> v3: * Add Masahiro's ack. v1 -> v2: * No changes. Sami, please scream if you are unhappy with how I worded this commit. init/Kconfig | 3 +++ 1 file changed, 3 insertions(+) base-commit: ae83d0b416db002fe95601e7f97f64b59514d936 diff --git a/init/Kconfig b/init/Kconfig index 9e22ee8fbd75e..c15ee42b82726 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -23,6 +23,9 @@ config LD_VERSION config CC_IS_CLANG def_bool $(success,$(CC) --version | head -n 1 | grep -q clang) +config LD_IS_LLD + def_bool $(success,$(LD) -v | head -n 1 | grep -q LLD) + config CLANG_VERSION int default $(shell,$(srctree)/scripts/clang-version.sh $(CC))