| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="ch-tools-linux-headers" role="wrap">
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| 9 | <?dbhtml filename="linux-headers.html"?>
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| 10 |
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| 11 | <sect1info condition="script">
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| 12 | <productname>linux-headers</productname>
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| 13 | <productnumber>&linux-version;</productnumber>
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| 14 | <address>&linux-url;</address>
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| 15 | </sect1info>
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| 16 |
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| 17 | <title>Linux-&linux-version; API Headers</title>
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| 18 |
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| 19 | <indexterm zone="ch-tools-linux-headers">
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| 20 | <primary sortas="a-Linux">Linux</primary>
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| 21 | <secondary>tools, API headers</secondary>
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| 22 | </indexterm>
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| 23 |
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| 24 | <sect2 role="package">
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| 25 | <title/>
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| 26 |
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| 27 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 28 | href="../chapter06/linux-headers.xml"
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| 29 | xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
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| 30 |
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| 31 | <segmentedlist>
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| 32 | <segtitle>&buildtime;</segtitle>
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| 33 | <segtitle>&diskspace;</segtitle>
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| 34 |
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| 35 | <seglistitem>
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| 36 | <seg>&linux-headers-ch5-sbu;</seg>
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| 37 | <seg>&linux-headers-ch5-du;</seg>
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| 38 | </seglistitem>
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| 39 | </segmentedlist>
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| 40 |
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| 41 | </sect2>
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| 42 |
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| 43 | <sect2 role="installation">
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| 44 | <title>Installation of Linux API Headers</title>
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| 45 |
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| 46 | <para>The Linux kernel needs to expose an Application Programming Interface
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| 47 | (API) for the system's C library (Glibc in LFS) to use. This is done
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| 48 | by way of sanitizing various C header files that are shipped in the Linux
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| 49 | kernel source tarball.</para>
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| 50 |
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| 51 | <para>Make sure there are no stale files embedded in the package:</para>
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| 52 |
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| 53 | <screen><userinput remap="pre">make mrproper</userinput></screen>
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| 54 |
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| 55 | <para>Now extract the user-visible kernel headers from the source.
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| 56 | The recommended make target <quote>headers_install</quote> cannot be
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| 57 | used, because it requires <application>rsync</application>, which may not
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| 58 | be available. The headers are first placed in
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| 59 | <filename class="directory">./usr</filename>, then copied to the needed
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| 60 | location.</para>
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| 61 |
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| 62 | <screen><userinput remap="make">make headers
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| 63 | </userinput><userinput remap="install">cp -rv usr/include/* /tools/include</userinput></screen>
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| 64 |
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| 65 | </sect2>
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| 66 |
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| 67 | <sect2 role="content">
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| 68 | <title/>
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| 69 |
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| 70 | <para>Details on this package are located in
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| 71 | <xref linkend="contents-linux-headers" role="."/></para>
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| 72 |
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| 73 | </sect2>
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| 74 |
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| 75 | </sect1>
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