Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D91BAC7EE2E for ; Sat, 25 Feb 2023 09:29:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229544AbjBYJ3Y (ORCPT ); Sat, 25 Feb 2023 04:29:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229471AbjBYJ3X (ORCPT ); Sat, 25 Feb 2023 04:29:23 -0500 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0E17FF03; Sat, 25 Feb 2023 01:29:20 -0800 (PST) Received: from [2a02:8108:8980:2478:8cde:aa2c:f324:937e]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1pVqrh-0000TL-HG; Sat, 25 Feb 2023 10:29:13 +0100 Message-ID: <1c222195-8fec-5067-c382-78dfd2505974@leemhuis.info> Date: Sat, 25 Feb 2023 10:29:12 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 To: Pavel Machek Cc: Jonathan Corbet , Randy Dunlap , Lukas Bulwahn , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, regressions@lists.linux.dev References: Content-Language: en-US, de-DE From: Thorsten Leemhuis Subject: Re: [PATCH v1] docs: describe how to quickly build Linux In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;linux@leemhuis.info;1677317361;72dcdd09; X-HE-SMSGID: 1pVqrh-0000TL-HG Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 25.02.23 10:17, Pavel Machek wrote: >> +If your platform uses techniques like Secure Boot, prepare the system to permit >> +starting self-compiled Linux kernels; install compilers and everything else >> +needed for building Linux; make sure to have 15 Gigabyte free space in your home >> +directory. Now run the following commands to download the sources of Linux, >> +which you then use to configure, build and install your own >> kernel:: > > 15GB is quite a lot. Maybe the shallow clone should be given another > chance? It got and made it, see v2: https://lore.kernel.org/all/8cfcf069d48c1b8d7b83aafe0132f8dad0f1d0ea.1676400947.git.linux@leemhuis.info/ >> + mkdir ~/linux/ ~/linux/sources ~/linux/build >> + git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git \ >> + ~/linux/sources >> + cd ~/linux/sources/ >> + # hint: if you don't want to build any stable or longterm kernels, skip the >> + # next two commands >> + git remote add linux-stable \ >> + https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git >> + git fetch --all >> + # hint: if you want to apply patches, do it at this point (see below for details) >> + # hint: at this point it's recommended to tag your build (see below for details) >> + yes "" | make O=~/linux/build/ localmodconfig >> + # hint: at this point you might want or have to adjust the build configuration >> + # (see below for details) >> + # note: if you are running a Debian kernel, you'll have to adjust the configuration >> + # at this point (see below) >> + make -j $(nproc --all) O=~/linux/build/ > > Is the complexity of using O= worth it for one-off kernel builds? That is a good question. I seemed like the right thing to do when I started writing this guide (maybe just because I've been doing it that way for ages), but now that you ask I'm unsure myself. /me wonders how others feel about it Ciao, Thorsten