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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2323 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
56 lines
2.5 KiB
XML
56 lines
2.5 KiB
XML
<sect2><title> </title><para> </para></sect2>
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<sect2>
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<title>Installation of the kernel</title>
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<para>Building the kernel involves a few steps: configuring it and compiling
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it. There are a few ways to configure the kernel. If you don't like the
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way this book does it, read the <filename>README</filename> that comes
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with the kernel source tree, and find out what the other options are.</para>
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<para>Something you could do, is take the <filename>.config</filename>
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file from your host distribution's kernel source tree and copy it to
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<filename class="directory">$LFS/usr/src/linux-&kernel-version;</filename>.
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This way you don't have to configure the entire kernel from scratch and
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can use your current values. If you choose to do this, first run the
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<userinput>make mrproper</userinput> command below, then copy the
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<filename>.config</filename> file over, then run
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<userinput>make menuconfig</userinput> followed by the rest of the commands
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(<userinput>make oldconfig</userinput> may be better in some situations.
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See the <filename>README</filename> file for more details when to use
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<userinput>make oldconfig</userinput>).</para>
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<para>If you intend to use kernel modules, you will need an
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<filename>/etc/modules.conf</filename> file. Information pertaining
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to modules and to kernel configuration in general may be found in the
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kernel documentation, which is stored stored in
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<filename>/usr/src/linux-&kernel-version;/Documentation</filename>. The
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modules.conf man page and the kernel HOWTO at
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<ulink url="&tldp-root;HOWTO/Kernel-HOWTO.html"/> may also be of
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interest to you.</para>
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<para>Prepare for compilation by running the following command:</para>
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<para><screen><userinput>make mrproper</userinput></screen></para>
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<para>This ensures that the kernel tree is absolutely clean. The kernel
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team recommends that this command be issued prior to
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<emphasis>each</emphasis> kernel compilation. You shouldn't rely
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on the source tree being clean after untarring.</para>
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<para><screen><userinput>make menuconfig &&
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make dep &&
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make bzImage &&
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make modules &&
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make modules_install</userinput></screen></para>
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<para>Kernel compilation has finished, but the files created are still
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in the source tree. The path to the kernel file,
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<filename>arch/i386/boot/bzImage</filename> below, may vary depending
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on the platform you're using.</para>
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<para><screen><userinput>cp arch/i386/boot/bzImage /boot/lfskernel &&
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cp System.map /boot</userinput></screen></para>
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</sect2>
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