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Increased verbosity of command explanations for kernel install.

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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2327 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
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Timothy Bauscher 2003-01-15 06:50:48 +00:00
parent 5d0e2ab613
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chapter08/kernel-inst.xml
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@ -3,31 +3,10 @@
<sect2>
<title>Installation of the kernel</title>
<para>Building the kernel involves a few steps: configuring it and compiling
it. There are a few ways to configure the kernel. If you don't like the
way this book does it, read the <filename>README</filename> that comes
with the kernel source tree, and find out what the other options are.</para>
<para>Something you could do, is take the <filename>.config</filename>
file from your host distribution's kernel source tree and copy it to
<filename class="directory">$LFS/usr/src/linux-&kernel-version;</filename>.
This way you don't have to configure the entire kernel from scratch and
can use your current values. If you choose to do this, first run the
<userinput>make mrproper</userinput> command below, then copy the
<filename>.config</filename> file over, then run
<userinput>make menuconfig</userinput> followed by the rest of the commands
(<userinput>make oldconfig</userinput> may be better in some situations.
See the <filename>README</filename> file for more details when to use
<userinput>make oldconfig</userinput>).</para>
<para>If you intend to use kernel modules, you will need an
<filename>/etc/modules.conf</filename> file. Information pertaining
to modules and to kernel configuration in general may be found in the
kernel documentation, which is stored stored in
<filename>/usr/src/linux-&kernel-version;/Documentation</filename>. The
modules.conf man page and the kernel HOWTO at
<ulink url="&tldp-root;HOWTO/Kernel-HOWTO.html"/> may also be of
interest to you.</para>
<para>Building the kernel involves a few steps: configuration,
compilation, and installation. If you don't like the way this
book configures the kernel, view the <filename>README</filename>
file in the kernel source tree for alternative methods.</para>
<para>Prepare for compilation by running the following command:</para>
@ -38,18 +17,60 @@ team recommends that this command be issued prior to
<emphasis>each</emphasis> kernel compilation. You shouldn't rely
on the source tree being clean after untarring.</para>
<para><screen><userinput>make menuconfig &amp;&amp;
make dep &amp;&amp;
make bzImage &amp;&amp;
make modules &amp;&amp;
make modules_install</userinput></screen></para>
<para>Configure the kernel via a menu-driven interface:</para>
<para>Kernel compilation has finished, but the files created are still
in the source tree. The path to the kernel file,
<filename>arch/i386/boot/bzImage</filename> below, may vary depending
on the platform you're using.</para>
<para><screen><userinput>make menuconfig</userinput></screen></para>
<para><screen><userinput>cp arch/i386/boot/bzImage /boot/lfskernel &amp;&amp;
cp System.map /boot</userinput></screen></para>
<para><userinput>make oldconfig</userinput> may be more appropriate
in some situations. See the <filename>README</filename> file for
more information.</para>
<para>If you wish, you may skip kernel configuration by copying the
kernel config file, <filename>.config</filename>, from your host
system to the
<filename class="directory">$LFS/usr/src/linux-&kernel-version;</filename>
directory.</para>
<para>Verify dependencies and create dependency information files:</para>
<para><screen><userinput>make dep</userinput></screen></para>
<para>Compile the kernel image:</para>
<para><screen><userinput>make bzImage</userinput></screen></para>
<para>Compile the drivers which have been configured as modules:</para>
<para><screen><userinput>make modules</userinput></screen></para>
<para>If you intend to use kernel modules, you will need an
<filename>/etc/modules.conf</filename> file. Information pertaining
to modules and to kernel configuration in general may be found in the
kernel documentation, which is stored stored in
<filename>/usr/src/linux-&kernel-version;/Documentation</filename>. The
modules.conf man page and the kernel HOWTO at
<ulink url="&tldp-root;HOWTO/Kernel-HOWTO.html"/> may also be of
interest to you.</para>
<para>Install the modules:</para>
<para><screen><userinput>make modules_install</userinput></screen></para>
<para>Kernel compilation has finished, but some of the files created
still reside in the source tree. To complete the installation, two
files should to be copied to the <filename>/boot</filename>
directory.</para>
<para>The path to the kernel file may vary depending on the platform
you're using. Issue the following command to install the kernel:</para>
<para><screen><userinput>cp arch/i386/boot/bzImage /boot/lfskernel</userinput></screen></para>
<para><filename>System.map</filename> is a symbol file for the kernel.
It maps the function entrypoints of every function in the kernel API,
as well as the addresses of the kernel data structures for the running
kernel. Issue the following command to install the map file:</para>
<para><screen><userinput>cp System.map /boot</userinput></screen></para>
</sect2>