1 | <sect1 id="ch05-introduction">
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2 | <title>Introduction</title>
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3 | <?dbhtml filename="introduction.html" dir="chapter05"?>
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4 |
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5 | <para>In this chapter we will compile and install a minimal
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6 | Linux system. This system will contain just enough tools to be able
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7 | to start constructing the final LFS system in the next chapter.</para>
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8 |
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9 | <para>The software in this chapter will be linked statically, because
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10 | there is a possibility that your host Linux system uses a different
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11 | version of the C library than the version you downloaded for
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12 | use in your LFS system. If we were to link the programs in this
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13 | chapter against that older C library, these programs might work
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14 | incorrectly, or not at all, when we change to the LFS system.</para>
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15 |
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16 | <para>The files compiled in this chapter will be installed under the
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17 | <filename class="directory">$LFS/static</filename> directory,
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18 | to keep them separate from the files installed in the next chapter.
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19 | As everything done here is only temporarily, we don't want
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20 | these files to pollute the to-be LFS system.</para>
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21 |
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22 | <para>The key to learning what makes a Linux system work is to know
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23 | exactly what each package is used for, and why the user or the system
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24 | needs it. For this purpose a short description of the content of each
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25 | package is given right after the installation instructions.</para>
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26 |
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27 | <para>During the installation of several packages you will probably
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28 | see all kinds of compiler warnings scroll by on your screen. These are
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29 | normal and can be safely ignored. They are just what they say they are:
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30 | warnings -- mostly about improper, but not illegal, use of the C or C++
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31 | syntax. It's just that C standards have changed rather often and some
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32 | packages still use the older standard, which is not really a problem.</para>
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33 |
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34 | <para>Before you start, make sure the LFS environment variable is set up
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35 | properly if you decided to make use of it. Run the following:</para>
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36 |
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37 | <para><screen><userinput>echo $LFS</userinput></screen></para>
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38 |
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39 | <para>Check to make sure the output contains the correct directory to the LFS
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40 | partition's mount point (/mnt/lfs for example).</para>
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41 |
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42 | </sect1>
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43 |
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