1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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5 | %general-entities;
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6 | ]>
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7 |
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8 | <sect1 id="ch-tools-generalinstructions">
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9 | <?dbhtml filename="generalinstructions.html"?>
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10 |
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11 | <title>General Compilation Instructions</title>
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12 |
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13 | <para>When building packages there are several assumptions made within
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14 | the instructions:</para>
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15 |
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16 | <itemizedlist>
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17 |
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18 | <listitem>
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19 | <para>Several of the packages are patched before compilation, but only when
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20 | the patch is needed to circumvent a problem. A patch is often needed in
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21 | both this and the next chapter, but sometimes in only one or the other.
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22 | Therefore, do not be concerned if instructions for a downloaded patch seem
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23 | to be missing. Warning messages about <emphasis>offset</emphasis> or
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24 | <emphasis>fuzz</emphasis> may also be encountered when applying a patch. Do
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25 | not worry about these warnings, as the patch was still successfully
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26 | applied.</para>
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27 | </listitem>
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28 |
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29 | <listitem>
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30 | <para>During the compilation of most packages, there will be several
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31 | warnings that scroll by on the screen. These are normal and can safely be
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32 | ignored. These warnings are as they appear—warnings about
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33 | deprecated, but not invalid, use of the C or C++ syntax. C standards change
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34 | fairly often, and some packages still use the older standard. This is not a
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35 | problem, but does prompt the warning.</para>
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36 |
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37 | <important>
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38 | <para>After installing each package, delete its source and build
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39 | directories, unless specifically instructed otherwise. Deleting the
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40 | sources prevents mis-configuration when the same package is reinstalled
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41 | later.</para>
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42 | </important>
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43 | </listitem>
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44 |
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45 | <listitem>
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46 | <para>Check one last time that the <envar>LFS</envar> environment variable
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47 | is set up properly:</para>
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48 |
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49 | <screen role="nodump"><userinput>echo $LFS</userinput></screen>
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50 |
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51 | <para>Make sure the output shows the path to the LFS partition's mount
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52 | point, which is <filename class="directory">/mnt/lfs</filename>, using our
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53 | example.</para>
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54 | </listitem>
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55 |
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56 | <listitem>
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57 |
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58 | <para>Finally, two last important items must be emphasized:</para>
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59 |
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60 | <important>
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61 | <para>The build instructions assume that the <command>bash</command>
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62 | shell is in use.</para>
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63 | </important>
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64 |
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65 | <important>
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66 | <para>Before issuing the build instructions for a package, the package
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67 | should be unpacked as user <systemitem class="username">lfs</systemitem>,
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68 | and a <command>cd</command> into the created directory should be
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69 | performed.</para>
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70 | </important>
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71 | </listitem>
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72 |
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73 | </itemizedlist>
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74 |
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75 | <para>To re-emphasize the build process:</para>
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76 |
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77 | <screen role="nodump">
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78 | 1. Place all the sources and patches in a directory that will be accessible from the
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79 | chroot envronment such as /mnt/lfs/sources/. Do <emphasis>not</emphasis> put sources in /mnt/lfs/tools/.
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80 | 2. Change to the sources directory.
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81 | 3. For each package:
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82 | a. Using the tar program, extract the package to be built.
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83 | b. Change to the directory created when the package was extracted.
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84 | c. Follow the book's instructions for building the package.
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85 | d. Change back to the sources directory.
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86 | e. Delete the extracted source directory and any <package>-build
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87 | directories that were created in the build process.</screen>
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88 |
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89 | </sect1>
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