lfs/chapter06/linux-libc-headers.xml

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  <!ENTITY % general-entities SYSTEM "../general.ent">
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  %general-entities;
  %patches-entities;
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<sect1 id="ch-system-linux-libc-headers" role="wrap">
<title>Linux-Libc-Headers-&linux-libc-headers-version;</title>
<?dbhtml filename="linux-libc-headers.html"?>

<indexterm zone="ch-system-linux-libc-headers">
<primary sortas="a-Linux-Libc-Headers">Linux-Libc-Headers</primary>
</indexterm>

<sect2 role="package"><title/>
<para>The Linux-Libc-Headers package contains the
<quote>sanitized</quote> kernel headers.</para>

<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem><seg>0.1 SBU</seg><seg>26.9 MB</seg></seglistitem>
</segmentedlist>

<segmentedlist>
<segtitle>&dependencies;</segtitle>
<seglistitem><seg>Coreutils</seg></seglistitem>
</segmentedlist>

</sect2>

<sect2 role="installation">
<title>Installation of Linux-Libc-Headers</title>

<para>For years it has been common practice to use <quote>raw</quote>
kernel headers (straight from a kernel tarball) in <filename
class="directory">/usr/include</filename>, but over the last few
years, the kernel developers have taken a strong stance that this
should not be done. This gave birth to the Linux-Libc-Headers Project,
which was designed to maintain an API stable version of the Linux
headers.</para>

<para>Install the header files:</para>

<screen><userinput>cp -Rv include/asm-i386 /usr/include/asm
cp -Rv include/linux /usr/include</userinput></screen>

<para>Ensure that all the headers are owned by root:</para>

<screen><userinput>chown -Rv root:root /usr/include/{asm,linux}</userinput></screen>

<para>Make sure the users can read the headers:</para>

<screen><userinput>find /usr/include/{asm,linux} -type d -exec chmod -v 755 {} \;
find /usr/include/{asm,linux} -type f -exec chmod -v 644 {} \;</userinput></screen>

</sect2>


<sect2 id="contents-linux-libc-headers" role="content"><title>Contents of Linux-Libc-Headers</title>

<segmentedlist>
<segtitle>Installed headers</segtitle>
<seglistitem><seg>/usr/include/{asm,linux}/*.h</seg></seglistitem>
</segmentedlist>

<variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>

<varlistentry id="linux-libc-headers">
<term><filename class="headerfile">/usr/include/{asm,linux}/*.h</filename></term>
<listitem>
<para>The Linux API headers</para>
<indexterm zone="ch-system-linux-libc-headers linux-libc-headers"><primary sortas="e-/usr/include/{asm,linux}/*.h">/usr/include/{asm,linux}/*.h</primary></indexterm>
</listitem>
</varlistentry>
</variablelist>

</sect2>

</sect1>