source: BOOK/introduction/common/how.xml@ 7ddb05f

sysvinit
Last change on this file since 7ddb05f was 9389c82, checked in by Chris Staub <chris@…>, 11 years ago

Moved details about booting/chrooting from how.xml to choose.xml

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BOOK/introduction/common/how.xml

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[3f8be484]1<?xml version="1.0" encoding="ISO-8859-1"?>
[aa18ac0]2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
[3f8be484]4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-intro-how">
9 <?dbhtml filename="how.html"?>
10
[576a66b]11 <title>How to Build a CLFS System</title>
[3f8be484]12
[576a66b]13 <para>The CLFS system will be built by using a previously installed
[f708a50]14 Unix system or Linux distribution (such as Debian, Fedora, openSUSE,
[040521bc]15 or Ubuntu). This existing system (the host) will be used as a starting
16 point to provide necessary programs, including a compiler, linker, and shell,
[3f8be484]17 to build the new system. Select the <quote>development</quote> option
18 during the distribution installation to be able to access these
19 tools.</para>
20
[0aee8d3]21 <para>As an alternative to installing an entire separate distribution onto
22 your machine, you may wish to use a livecd. Most distributions provide
23 a livecd, which provides an environment to which you can add the required
[9389c82]24 tools onto, allowing you to successfully follow the instructions in this
25 book. Remember that if you reboot the livecd you will need to reconfigure
26 the host environment before continuing with your build.</para>
[3f8be484]27
28 <para><xref linkend="chapter-partitioning"/> of this book describes how
29 to create a new Linux native partition and file system, the place
[576a66b]30 where the new CLFS system will be compiled and installed. <xref
[3f8be484]31 linkend="chapter-getting-materials"/> explains which packages and
[576a66b]32 patches need to be downloaded to build a CLFS system and how to store
[3f8be484]33 them on the new file system. <xref linkend="chapter-final-preps"/>
34 discusses the setup for an appropriate working environment. Please read
35 <xref linkend="chapter-final-preps"/> carefully as it explains several
36 important issues the developer should be aware of before beginning to
[8659630]37 work through <xref linkend="chapter-cross-tools"/> and
[3f8be484]38 beyond.</para>
39
[5da8aa0]40 <para><xref linkend="chapter-cross-tools"/> explains the installation of
41 cross-compile tools which will be built on the host but be able to compile
42 programs that run on the target machine. These cross-compile tools will
43 be used to create a temporary, minimal system that will be the basis for
[576a66b]44 building the final CLFS system. Some of these packages are needed to resolve
[5da8aa0]45 circular dependencies&mdash;for example, to compile a compiler, you need a
46 compiler.</para>
47
[bc610664]48 <para>The process of building cross-compile tools first involves building and
[24b004c]49 installing all the necessary tools to create a build system for the target
[bc610664]50 machine. With these cross-compiled tools, we eliminate any
[a266616]51 dependencies on the toolchain from our host distro.</para>
[3f8be484]52
[a266616]53 <para>After we build our <quote>Cross-Tools</quote>, we start building
[0702b03]54 a very minimal working system in
[9389c82]55 <filename class="directory">/tools</filename>, using the cross-toolchain in
56 <filename class="directory">/cross-tools</filename>. Once the temporary
57 system is finished, we perform a few additional tasks to prepare to
58 enter this temporary build environment, either by booting or chrooting into
59 it. For more details about the difference between these methods, see
60 <xref linkend="ch-temp-system-choose"/>.</para>
[3f8be484]61
[9389c82]62 <para>In <xref linkend="chapter-building-system"/>, after having booted
63 or chrooted into the temporary build environment, the full CLFS system is
64 built.</para>
[5da8aa0]65
[9389c82]66 <para>To finish the installation, several configuration files are created in
67 <xref linkend="chapter-system-config"/>, and the kernel and boot loader are
68 set up in <xref linkend="chapter-bootable"/>.
69 <xref linkend="chapter-finalizing"/>
[a266616]70 contains information on furthering the CLFS experience beyond this book.
71 After the steps in this book have been implemented, the computer will be
72 ready to reboot into the new CLFS system.</para>
[3f8be484]73
74 <para>This is the process in a nutshell. Detailed information on each
75 step is discussed in the following chapters and package descriptions.
76 Items that may seem complicated will be clarified, and everything will
[576a66b]77 fall into place as the reader embarks on the CLFS adventure.</para>
[3f8be484]78
79</sect1>
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