| 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-cross-tools-file" role="wrap">
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| 9 | <?dbhtml filename="file.html"?>
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| 10 |
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| 11 | <title>File-&file-version;</title>
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| 12 |
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| 13 | <indexterm zone="ch-cross-tools-file">
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| 14 | <primary sortas="a-File">File</primary>
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| 15 | <secondary>cross tools</secondary>
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| 16 | </indexterm>
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| 17 |
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| 18 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 19 | href="../../final-system/common/file.xml"
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| 20 | xpointer="xpointer(//*[@role='package'])"/>
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| 21 |
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| 22 | <sect2 role="installation">
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| 23 | <title>Installation of File</title>
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| 24 |
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| 25 | <para>One method that <command>file</command> uses for identifying a given
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| 26 | file is to run <quote>magic tests</quote>, where it compares the file's
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| 27 | contents to data in <quote>magic files</quote>, which contain information
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| 28 | about a number of standard file formats. When File is compiled, it will run
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| 29 | <command>file -C</command> to combine the information from the
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| 30 | magic files in its source tree into a single <filename>magic.mgc</filename>
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| 31 | file, which it will use after it is installed. When we build File in
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| 32 | <xref linkend="chapter-temp-system"/>, it will be cross-compiled, so it
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| 33 | will not be able to run the <command>file</command> program that it just
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| 34 | built, which means that we need one that will run on the host system.</para>
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| 35 |
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| 36 | <para>Prepare File for compilation:</para>
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| 37 |
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| 38 | <screen><userinput>./configure \
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| 39 | --prefix=/cross-tools</userinput></screen>
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| 40 |
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| 41 | <variablelist>
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| 42 | <title>The meaning of the configure options:</title>
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| 43 |
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| 44 | <varlistentry>
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| 45 | <term><parameter>--prefix=/cross-tools</parameter></term>
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| 46 | <listitem>
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| 47 | <para>This tells the configure script to prepare to install the
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| 48 | package in the <filename class="directory">/cross-tools</filename>
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| 49 | directory.</para>
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| 50 | </listitem>
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| 51 | </varlistentry>
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| 52 |
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| 53 | </variablelist>
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| 54 |
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| 55 | <para>Compile the package:</para>
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| 56 |
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| 57 | <screen><userinput>make</userinput></screen>
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| 58 |
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| 59 | <para>Install the package:</para>
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| 60 |
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| 61 | <screen><userinput>make install</userinput></screen>
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| 62 |
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| 63 | </sect2>
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| 64 |
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| 65 | <sect2 role="content">
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| 66 | <title/>
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| 67 |
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| 68 | <para>Details on this package are located in <xref
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| 69 | linkend="contents-file" role="."/></para>
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| 70 |
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| 71 | </sect2>
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| 72 |
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| 73 | </sect1>
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