[3c63868] | 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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[2ca8941] | 13 | <para>When building packages there are several assumptions made within
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[3c63868] | 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 | </listitem>
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| 37 |
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| 38 | <listitem>
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| 39 | <para>Check one last time that the <envar>LFS</envar> environment variable
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| 40 | is set up properly:</para>
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| 41 |
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| 42 | <screen role="nodump"><userinput>echo $LFS</userinput></screen>
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| 43 |
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| 44 | <para>Make sure the output shows the path to the LFS partition's mount
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| 45 | point, which is <filename class="directory">/mnt/lfs</filename>, using our
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| 46 | example.</para>
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| 47 | </listitem>
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| 48 |
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| 49 | <listitem>
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| 50 |
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[16471f8] | 51 | <para>Finally, two last important items must be emphasized:</para>
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| 52 |
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| 53 | <important>
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[79bfd82] | 54 |
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| 55 | <para>The build instructions assume that the <xref
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| 56 | linkend='pre-hostreqs'/>, including symbolic links, have been set
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| 57 | properly:</para>
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[2ca8941] | 58 |
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[79bfd82] | 59 | <itemizedlist role='important'>
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| 60 |
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| 61 | <listitem override='bullet'><para><command>bash</command> is the shell
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| 62 | in use.</para></listitem>
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[2ca8941] | 63 |
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[79bfd82] | 64 | <listitem override='bullet'><para><command>sh</command> is a symbolic
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| 65 | link to <command>bash</command>.</para></listitem>
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| 66 |
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| 67 | <listitem override='bullet'><para><command>/usr/bin/awk</command> is a
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| 68 | symbolic link to <command>gawk</command>.</para></listitem>
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| 69 |
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| 70 | <listitem override='bullet'><para><command>/usr/bin/yacc</command> is a
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| 71 | symbolic link to <command>bison</command> or a small script that
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| 72 | executes bison.</para></listitem>
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| 73 |
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| 74 | </itemizedlist>
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[16471f8] | 75 | </important>
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[3c63868] | 76 |
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| 77 | <important>
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[4df26333] | 78 | <para>To re-emphasize the build process:</para>
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| 79 |
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| 80 | <orderedlist numeration="arabic" spacing="compact">
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| 81 | <listitem>
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| 82 | <para>Place all the sources and patches in a directory that will be
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| 83 | accessible from the chroot environment such as
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| 84 | <filename class="directory">/mnt/lfs/sources/</filename>. Do
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| 85 | <emphasis>not</emphasis> put sources in
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| 86 | <filename class="directory">/mnt/lfs/tools/</filename>.</para>
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| 87 | </listitem>
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| 88 | <listitem>
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| 89 | <para>Change to the sources directory.</para>
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| 90 | </listitem>
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[3380af3] | 91 | <listitem id='buildinstr' xreflabel='Package build instructions'>
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[4df26333] | 92 | <para>For each package:</para>
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| 93 | <orderedlist numeration="loweralpha" spacing="compact">
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| 94 | <listitem>
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| 95 | <para>Using the <command>tar</command> program, extract the package
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[2ca8941] | 96 | to be built. In Chapter 5, ensure you are the <emphasis>lfs</emphasis>
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[4df26333] | 97 | user when extracting the package.</para>
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| 98 | </listitem>
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| 99 | <listitem>
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| 100 | <para>Change to the directory created when the package was
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| 101 | extracted.</para>
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| 102 | </listitem>
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| 103 | <listitem>
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| 104 | <para>Follow the book's instructions for building the package.</para>
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| 105 | </listitem>
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| 106 | <listitem>
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| 107 | <para>Change back to the sources directory.</para>
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| 108 | </listitem>
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| 109 | <listitem>
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[f1dd547] | 110 | <para>Delete the extracted source directory unless instructed otherwise.</para>
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[4df26333] | 111 | </listitem>
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| 112 | </orderedlist>
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| 113 | </listitem>
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| 114 | </orderedlist>
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[3c63868] | 115 | </important>
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| 116 | </listitem>
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| 117 |
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| 118 | </itemizedlist>
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| 119 |
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| 120 | </sect1>
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