source: BOOK/final-system/common/flex.xml @ fb40919

clfs-1.2clfs-2.1clfs-3.0.0-systemdclfs-3.0.0-sysvinitsystemdsysvinit
Last change on this file since fb40919 was e1153ea, checked in by Jim Gifford <clfs@…>, 18 years ago

r3371@server (orig r1554): chris | 2006-05-10 14:03:44 -0700
Removed dependency info from individual package instructions

  • Property mode set to 100644
File size: 3.7 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
4  <!ENTITY % general-entities SYSTEM "../../general.ent">
5  %general-entities;
6]>
7
8<sect1 id="ch-system-flex" role="wrap">
9  <?dbhtml filename="flex.html"?>
10
11  <title>Flex-&flex-version;</title>
12
13  <indexterm zone="ch-system-flex">
14    <primary sortas="a-Flex">Flex</primary>
15  </indexterm>
16
17  <sect2 role="package">
18    <title/>
19
20    <para>The Flex package contains a utility for generating programs that
21    recognize patterns in text.</para>
22
23  </sect2>
24
25  <sect2 role="installation">
26    <title>Installation of Flex</title>
27
28    <para os="e">Prepare Flex for compilation:</para>
29
30<screen os="f"><userinput>./configure --prefix=/usr</userinput></screen>
31
32    <para os="g">Compile the package:</para>
33
34<screen os="h"><userinput>make</userinput></screen>
35
36    <para os="i">To test the results, issue:
37    <userinput>make check</userinput>.</para>
38
39    <para os="j">Install the package:</para>
40
41<screen os="k"><userinput>make install</userinput></screen>
42
43    <para os="l">There are some packages that expect to find the
44    <filename class="libraryfile">lex</filename> library in <filename
45    class="directory">/usr/lib</filename>. Create a symlink to account for
46    this:</para>
47
48<screen os="m"><userinput>ln -sv libfl.a /usr/lib/libl.a</userinput></screen>
49
50    <para os="n">A few programs do not know about <command>flex</command> yet and
51    try to run its predecessor, <command>lex</command>. To support those
52    programs, create a wrapper script named <filename>lex</filename> that
53    calls <filename>flex</filename> in <command>lex</command> emulation
54    mode:</para>
55
56<screen os="o"><userinput>cat &gt; /usr/bin/lex &lt;&lt; "EOF"
57<literal>#!/bin/sh
58# Begin /usr/bin/lex
59
60exec /usr/bin/flex -l "$@"
61
62# End /usr/bin/lex</literal>
63EOF
64chmod -v 755 /usr/bin/lex</userinput></screen>
65
66  </sect2>
67
68  <sect2 id="contents-flex" role="content">
69    <title>Contents of Flex</title>
70
71    <segmentedlist>
72      <segtitle>Installed programs</segtitle>
73      <segtitle>Installed library</segtitle>
74
75      <seglistitem>
76        <seg>flex and lex</seg>
77        <seg>libfl.a</seg>
78      </seglistitem>
79    </segmentedlist>
80
81    <variablelist>
82      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
83      <?dbfo list-presentation="list"?>
84      <?dbhtml list-presentation="table"?>
85
86      <varlistentry id="flex">
87        <term><command>flex</command></term>
88        <listitem>
89          <para>A tool for generating programs that recognize patterns in text;
90          it allows for the versatility to specify the rules for pattern-finding,
91          eradicating the need to develop a specialized program</para>
92          <indexterm zone="ch-system-flex flex">
93            <primary sortas="b-flex">flex</primary>
94          </indexterm>
95        </listitem>
96      </varlistentry>
97
98      <varlistentry id="lex">
99        <term><command>lex</command></term>
100        <listitem>
101          <para>A script that runs <command>flex</command> in
102          <command>lex</command> emulation mode</para>
103          <indexterm zone="ch-system-flex lex">
104            <primary sortas="b-lex">lex</primary>
105          </indexterm>
106        </listitem>
107      </varlistentry>
108
109      <varlistentry id="libfl.a">
110        <term><filename class="libraryfile">libfl.a</filename></term>
111        <listitem>
112          <para>The <filename class="libraryfile">flex</filename> library</para>
113          <indexterm zone="ch-system-flex libfl.a">
114            <primary sortas="c-libfl.a">libfl.a</primary>
115          </indexterm>
116        </listitem>
117      </varlistentry>
118
119    </variablelist>
120
121  </sect2>
122
123</sect1>
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