| [6370fa6] | 1 | <sect1 id="ch05-introduction">
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| 2 | <title>Introduction</title>
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| [75043c22] | 3 | <?dbhtml filename="introduction.html" dir="chapter05"?>
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| [6370fa6] | 4 |
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| [b822811] | 5 | <para>In the following chapters we will install all the software that belongs
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| 6 | to a basic Linux system. After you're done with this and the next chapter,
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| [607c7370] | 7 | you'll have a fully working Linux system. The remaining chapters deal
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| 8 | with creating the boot scripts, making the LFS system bootable and
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| [b822811] | 9 | setting up basic networking.</para>
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| [6370fa6] | 10 |
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| [2f5db45b] | 11 | <para>The software in this chapter will be linked statically and will be
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| 12 | reinstalled in the next chapter and linked dynamically. The
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| [6370fa6] | 13 | reason for the static version first is that there is a chance that our
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| [72033583] | 14 | normal Linux system and the LFS system aren't using the same C
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| [6370fa6] | 15 | Library versions. If the programs in the first part are linked against
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| 16 | an older C library version, those programs might not work well on the
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| [2f5db45b] | 17 | LFS system. Another reason is to resolve circular dependencies. An
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| 18 | example of such a dependency is that you need a compiler to install a
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| 19 | compiler, and you're going to need a shell to install a shell and that
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| [d8897c2] | 20 | compiler.</para>
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| [6370fa6] | 21 |
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| [2a761d4] | 22 | <para>The key to learning what makes Linux tick is to know exactly what packages
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| [72033583] | 23 | are used for and why a user or the system needs them. Descriptions
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| [6370fa6] | 24 | of the package content are provided after the Installation subsection of each
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| [b822811] | 25 | package and in Appendix A as well.</para>
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| [6370fa6] | 26 |
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| [b822811] | 27 | <para>During the installation of various packages, you will more than likely see
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| [607c7370] | 28 | all kinds of compiler warnings scrolling by on the screen. These are
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| 29 | normal and can be safely ignored. They are just that, warnings (mostly
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| 30 | about improper use of the C or C++ syntax, but not illegal use. It's just
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| 31 | that, often, C standards changed and packages still use the old standard
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| [b822811] | 32 | which is not a problem).</para>
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| 33 |
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| 34 | <para>Before we start, make sure the LFS environment variable is setup
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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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| [607c7370] | 41 |
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| [6370fa6] | 42 | </sect1>
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| 43 |
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