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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</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 and dependencies lying around
from previous activity:</para>
<screen><userinput remap="pre">make mrproper</userinput></screen>
<para>Now test and extract the user-visible kernel headers from the source.
They are placed in an intermediate local directory and copied to the needed
location because the extraction process removes any existing files in
the target directory.</para>
<screen><userinput remap="make">make headers_check
make INSTALL_HDR_PATH=dest headers_install
</userinput><userinput remap="install">cp -rv dest/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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