mirror of https://github.com/tLDP/LDP
68 lines
3.1 KiB
XML
68 lines
3.1 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="materials-introduction">
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<?dbhtml filename="introduction.html"?>
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<title>Introduction</title>
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<para>This chapter includes a list of packages that need to be downloaded in
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order to build a basic Linux system. The listed version numbers correspond to
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versions of the software that are known to work, and this book is based on
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their use. We highly recommend against using newer versions because the build
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commands for one version may not work with a newer version. The newest package
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versions may also have problems that require work-arounds. These work-arounds
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will be developed and stabilized in the development version of the
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book.</para>
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<para>Download locations may not always be accessible. If a download
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location has changed since this book was published, Google (<ulink
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url="http://www.google.com/"/>) provides a useful search engine for
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most packages. If this search is unsuccessful, try one of the
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alternative means of downloading discussed at <ulink
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url="&lfs-root;lfs/packages.html#packages"/>. </para>
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<para>Downloaded packages and patches will need to be stored somewhere
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that is conveniently available throughout the entire build. A working
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directory is also required to unpack the sources and build them.
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<filename class="directory">$LFS/sources</filename> can be used both
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as the place to store the tarballs and patches and as a working
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directory. By using this directory, the required elements will be
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located on the LFS partition and will be available during all stages
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of the building process.</para>
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<para>To create this directory, execute the following command, as user
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<systemitem class="username">root</systemitem>, before starting the download
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session:</para>
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<screen role="nodump"><userinput>mkdir -v $LFS/sources</userinput></screen>
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<para>Make this directory writable and sticky. <quote>Sticky</quote>
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means that even if multiple users have write permission on a
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directory, only the owner of a file can delete the file within a
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sticky directory. The following command will enable the write and
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sticky modes:</para>
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<screen role="nodump"><userinput>chmod -v a+wt $LFS/sources</userinput></screen>
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<para>An easy way to download all of the packages and patches is by using
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<ulink url="../wget-list">wget-list</ulink> as an input to
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<command>wget</command>. For example:</para>
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<screen role="nodump"><userinput>wget --input-file=wget-list --continue --directory-prefix=$LFS/sources</userinput></screen>
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<para>Additionally, starting with LFS-7.0, there is a separate file,
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<ulink url="../md5sums">md5sums</ulink>, which can be used to verify that all
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the correct packages are available before proceeding. Place that file in
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<filename class="directory">$LFS/sources</filename> and run:</para>
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<screen role="nodump"><userinput>pushd $LFS/sources
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md5sum -c md5sums
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popd</userinput></screen>
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</sect1>
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