1 | <sect2>
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2 | <title>Command explanations</title>
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3 |
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4 | <para><userinput>make mrproper:</userinput> This will ensure that the kernel
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5 | tree is absolutely clean. We do this because the kernel team recommend
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6 | that this is done prior to <emphasis>each</emphasis> kernel compilation,
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7 | and that we shouldn't rely on the source tree being automatically clean
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8 | after untarring.</para>
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9 |
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10 | <para><userinput>yes "" | make config:</userinput> This runs make config and
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11 | answers with the default answer to every question the config script asks
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12 | the user (it does this by simply doing the equivalent of hitting the
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13 | Enter key, thus accepting the default Y and N answers to the questions).
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14 | We're not configuring the real kernel here, we just need to have some sort
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15 | of configure file created so that we can run make dep next that will
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16 | create a few header files in <filename>include/linux</filename>, like
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17 | version.h, among others, that we will need to compile Glibc and other
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18 | packages later in chroot.</para>
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19 |
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20 | <para><userinput>make dep:</userinput> make dep checks dependencies and sets
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21 | up the dependencies file. We don't really care about the dependency
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22 | checks, but what we do care about is that make dep creates those
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23 | aforementioned files in <filename>include/linux</filename> we will be
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24 | needing later on.</para>
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25 |
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26 | <para><userinput>mkdir $LFS/usr/include/asm</userinput>
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27 | and <userinput>cp include/asm/* $LFS/usr/include/asm</userinput>:
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28 | This copies the platform-specific assembler kernel header files to
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29 | <filename>$LFS/usr/include/asm</filename>.</para>
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30 |
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31 | <para><userinput>cp -R include/linux $LFS/usr/include</userinput>:
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32 | This command copies the cross-platform kernel header files to
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33 | <filename>$LFS/usr/include</filename>.</para>
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34 |
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35 | </sect2>
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36 |
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