1 | <sect2>
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2 | <title>Installation of the kernel headers</title>
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3 |
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4 | <para>We won't be compiling a new kernel yet -- we'll do that when we have
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5 | finished the installation of all the packages. But as some packages need the
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6 | kernel header files, we're going to unpack the kernel archive now, set it up,
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7 | and copy the header files to where they will be found by these packages.</para>
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8 |
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9 | <para>It is important to note that the files in the kernel source directory
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10 | are not owned by root. Whenever you unpack a package as user root (like we
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11 | do here inside chroot), the files end up having the user and group ID's of
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12 | whatever they were on the packager's computer. This is usually not a
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13 | problem for any other package you install because you remove the source
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14 | tree after the installation. But the Linux kernel source tree is often kept
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15 | around for a long time, so there's a chance whatever userid was used will
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16 | be assigned to somebody on your machine, and that person would get write
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17 | access to the kernel source.</para>
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18 |
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19 | <para>In light of this, you might want to run <userinput>chown
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20 | 0.0</userinput> on the linux-&kernel-version; directory to ensure all files
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21 | are owned by user <emphasis>root</emphasis>.</para>
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22 |
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23 | <para>The kernel headers are installed by running the following
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24 | commands:</para>
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25 |
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26 | <para><screen><userinput>ln -s /static/bin/pwd /bin/pwd &&
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27 | make mrproper &&
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28 | make include/linux/version.h &&
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29 | make symlinks &&
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30 | cp -HR include/asm /usr/include &&
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31 | cp -R include/asm-generic /usr/include &&
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32 | cp -R include/linux /usr/include &&
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33 | touch /usr/include/linux/autoconf.h &&
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34 | rm /bin/pwd</userinput></screen></para>
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35 |
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36 | </sect2>
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37 |
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