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  1. <sect1 id="ch05-introduction">
    2. 

  2. <title>Introduction</title>
    3. 

  3. <?dbhtml filename="introduction.html" dir="chapter05"?>
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  4. 

  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
    7. 

  7. to start constructing the final LFS system in the next chapter.</para>
    8. 

  8. 

  9. <para>The files compiled in this chapter will be installed under the
    10. 

  10. <filename class="directory">$LFS/static</filename> directory,
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  11. to keep them separate from the files installed in the next chapter.
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  12. Since the packages compiled here are merely temporary, we don't want
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  13. them to pollute the soon-to-be LFS system.</para>
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  14. 

  15. <para>The key to learning what makes a Linux system work is to know
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  16. exactly what each package is used for, and why the user or the system
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  17. needs it. For this purpose a short description of the content of each
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  18. package is given right after the installation instructions.</para>
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  19. 

  20. <para>Several of the packages are patched before compilation, but only when
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  21. the patch is needed to circumvent a problem. Often the patch is needed in
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  22. both this and the next chapter, but sometimes in only one of them. So, don't
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  23. worry when instructions for a downloaded patch seem to be missing.</para>
    24. 

  24. 

  25. <para>During the installation of most packages you will
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  26. see all kinds of compiler warnings scroll by on your screen. These are
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  27. normal and can be safely ignored. They are just what they say they are:
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  28. warnings -- mostly about improper, but not illegal, use of the C or C++
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  29. syntax. It's just that C standards have changed rather often and some
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  30. packages still use the older standard, which is not really a problem.</para>
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  31. 

  32. <para>Before continuing, make sure the LFS environment variable is set up
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  33. properly (if you decided to make use of it) by executing the following:</para>
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  34. 

  35. <para><screen><userinput>echo $LFS</userinput></screen></para>
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  36. 

  37. <para>Make sure the output shows the path to your LFS partition's mount
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  38. point, which is <filename class="directory">/mnt/lfs</filename> if you
    39. 

  39. followed our example.</para>
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  40. 

  41. </sect1>
    42. 

  42.