| 1 | <sect1 id="ch05-introduction">
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| 2 | <title>Introduction</title>
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| 3 |
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| 4 | <para>In the following chapters we will install all the software that belongs
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| 5 | to a basic Linux system. After you're done with this and the next chapter,
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| 6 | you'll have a fully working Linux system. The remaining chapters deal
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| 7 | with creating the boot scripts, making the LFS system bootable and
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| 8 | setting up basic networking.</para>
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| 9 |
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| 10 | <para>The software in this chapter will be linked statically and will be
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| 11 | reinstalled in the next chapter and linked dynamically. The
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| 12 | reason for the static version first is that there is a chance that our
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| 13 | normal Linux system and the LFS system aren't using the same C
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| 14 | Library versions. If the programs in the first part are linked against
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| 15 | an older C library version, those programs might not work well on the
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| 16 | LFS system. Another reason is to resolve circular dependencies. An
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| 17 | example of such a dependency is that you need a compiler to install a
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| 18 | compiler, and you're going to need a shell to install a shell and that
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| 19 | compiler.</para>
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| 20 |
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| 21 | <para>The key to learning what makes Linux tick is to know exactly what packages
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| 22 | are used for and why a user or the system needs them. Descriptions
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| 23 | of the package content are provided after the Installation subsection of each
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| 24 | package and in Appendix A as well.</para>
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| 25 |
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| 26 | <para>During the installation of various packages, you will more than likely see
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| 27 | all kinds of compiler warnings scrolling by on the screen. These are
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| 28 | normal and can be safely ignored. They are just that, warnings (mostly
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| 29 | about improper use of the C or C++ syntax, but not illegal use. It's just
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| 30 | that, often, C standards changed and packages still use the old standard
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| 31 | which is not a problem).</para>
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| 32 |
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| 33 | <para>Before we start, make sure the LFS environment variable is setup
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| 34 | properly if you decided to make use of it. Run the following:</para>
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| 35 |
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| 36 | <para><screen><userinput>echo $LFS</userinput></screen></para>
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| 37 |
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| 38 | <para>Check to make sure the output contains the correct directory to the LFS
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| 39 | partition's mount point (/mnt/lfs for example).</para>
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| 40 |
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| 41 | </sect1>
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| 42 |
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