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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../general.ent">
%general-entities;
]>
<sect1 id="ch-intro-how">
<?dbhtml filename="how.html"?>
<title>How to Build an LFS System</title>
<para>The LFS system will be built by using an already installed
Linux distribution (such as Debian, OpenMandriva, Fedora, or openSUSE). This
existing Linux system (the host) will be used as a starting point to
provide necessary programs, including a compiler, linker, and shell,
to build the new system. Select the <quote>development</quote> option
during the distribution installation to include these
tools.</para>
<note><para>There are many ways to install a Linux distribution and
the defaults are usually not optimal for building an LFS system.
For suggestions on setting up a commercial distribution see:
<ulink url="&lfs-root;hints/downloads/files/partitioning-for-lfs.txt"/>.</para></note>
<para>As an alternative to installing a separate distribution on your
machine, you may wish to use a LiveCD from a commercial distribution.</para>
<!--
<note>
<para>The LFS LiveCD might not work on newer hardware configurations,
failing to boot or failing to detect some devices such as some SATA hard
drives.</para>
</note> -->
<para><xref linkend="chapter-partitioning"/> of this book describes how
to create a new Linux native partition and file system,
where the new LFS system will be compiled and installed. <xref
linkend="chapter-getting-materials"/> explains which packages and
patches must be downloaded to build an LFS system, and how to store
them on the new file system. <xref linkend="chapter-final-preps"/>
discusses the setup of an appropriate working environment. Please read
<xref linkend="chapter-final-preps"/> carefully as it explains several
important issues you should be aware of before you begin to
work your way through <xref linkend="chapter-cross-tools"/> and beyond.</para>
<para><xref linkend="chapter-cross-tools"/> explains the installation of
the initial tool chain, (binutils, gcc, and glibc) using cross-compilation
techniques to isolate the new tools from the host system.</para>
<para><xref linkend="chapter-temporary-tools"/> shows you how to
cross-compile basic utilities using the just built cross-toolchain.</para>
<para><xref linkend="chapter-chroot-temporary-tools"/> then enters a
"chroot" environment, where we use the new tools to build all
the rest of the tools needed to create the LFS system.</para>
<para>This effort to isolate the new system from the host distribution may
seem excessive. A full technical explanation as to why this is done is
provided in <xref linkend="ch-tools-toolchaintechnotes"/>.</para>
<para>In <xref linkend="chapter-building-system"/> the
full-blown LFS system is built. Another advantage provided by the chroot
environment is that it allows you to continue using the host system
while LFS is being built. While waiting for package compilations to
complete, you can continue using your computer as usual.</para>
<para>To finish the installation, the basic system configuration is set up in
<xref linkend="chapter-config"/>, and the kernel and boot loader are created
in <xref linkend="chapter-bootable"/>. <xref linkend="chapter-finalizing"/>
contains information on continuing the LFS experience beyond this book.
After the steps in this chapter have been implemented, the computer is
ready to boot into the new LFS system.</para>
<para>This is the process in a nutshell. Detailed information on each
step is presented in the following chapters.
Items that seem complicated now will be clarified, and everything will
fall into place as you commence your LFS adventure.</para>
</sect1>
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