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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../general.ent">
%general-entities;
]>
<sect1 id="ch-tools-linux-headers" role="wrap">
<?dbhtml filename="linux-headers.html"?>
<sect1info condition="script">
<productname>linux-headers</productname>
<productnumber>&linux-version;</productnumber>
<address>&linux-url;</address>
</sect1info>
<title>Linux-&linux-version; API Headers</title>
<indexterm zone="ch-tools-linux-headers">
<primary sortas="a-Linux">Linux</primary>
<secondary>tools, API headers</secondary>
</indexterm>
<sect2 role="package">
<title/>
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
href="../chapter06/linux-headers.xml"
xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem>
<seg>&linux-headers-ch5-sbu;</seg>
<seg>&linux-headers-ch5-du;</seg>
</seglistitem>
</segmentedlist>
</sect2>
<sect2 role="installation">
<title>Installation of Linux API Headers</title>
<para>The Linux kernel needs to expose an Application Programming Interface
(API) for the system's C library (Glibc in LFS) to use. This is done
by way of sanitizing various C header files that are shipped in the Linux
kernel source tarball.</para>
<para>Make sure there are no stale files embedded in the package:</para>
<screen><userinput remap="pre">make mrproper</userinput></screen>
<para>Now extract the user-visible kernel headers from the source.
The recommended make target <quote>headers_install</quote> cannot be
used, because it requires <application>rsync</application>, which may not
be available. The headers are first placed in
<filename class="directory">./usr</filename>, then copied to the needed
location.</para>
<screen><userinput remap="make">make headers
</userinput><userinput remap="install">cp -rv usr/include/* /tools/include</userinput></screen>
</sect2>
<sect2 role="content">
<title/>
<para>Details on this package are located in
<xref linkend="contents-linux-headers" role="."/></para>
</sect2>
</sect1>
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