source: BOOK/final-system/common/flex.xml @ 0115862

clfs-3.0.0-systemdsystemd
Last change on this file since 0115862 was 0115862, checked in by Chris Staub <chris@…>, 7 years ago

Don't need M4 var

  • Property mode set to 100644
File size: 4.5 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3  "http://www.oasis-open.org/docbook/xml/4.5/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="a">Prepare Flex for compilation:</para>
29
30<screen os="b"><userinput>./configure --prefix=/usr --docdir=/usr/share/doc/flex-&flex-version;</userinput></screen>
31
32    <para os="c">Compile the package:</para>
33
34<screen os="d"><userinput>make</userinput></screen>
35
36    <para os="e">To test the results, issue:</para>
37
38<screen os="e2"><userinput remap="test">make check</userinput></screen>
39
40    <para os="e3">The test suite will report 3 failures for tests that
41    use <command>bison</command>, which is not installed yet. For full
42    test coverage, you can run Flex's test suite again after Bison
43    is installed.</para>
44
45    <para os="f">Install the package:</para>
46
47<screen os="g"><userinput>make install</userinput></screen>
48
49    <para os="h">A few programs do not know about <command>flex</command> yet and
50    try to run its predecessor, <command>lex</command>. To support those
51    programs, create a wrapper script named <filename>lex</filename> that
52    calls <filename>flex</filename> in <command>lex</command> emulation
53    mode:</para>
54
55<screen os="i"><userinput>cat &gt; /usr/bin/lex &lt;&lt; "EOF"
56<literal>#!/bin/sh
57# Begin /usr/bin/lex
58
59exec /usr/bin/flex -l "$@"
60
61# End /usr/bin/lex</literal>
62EOF
63chmod -v 755 /usr/bin/lex</userinput></screen>
64
65  </sect2>
66
67  <sect2 id="contents-flex" role="content">
68    <title>Contents of Flex</title>
69
70    <segmentedlist>
71      <segtitle>Installed programs</segtitle>
72      <segtitle>Installed libraries</segtitle>
73      <segtitle>Installed directory</segtitle>
74
75      <seglistitem>
76        <seg>flex, flex++ (link to flex), lex</seg>
77        <seg>libfl.[a,so], libfl_pic.[a,so]</seg>
78        <seg>/usr/share/doc/flex-&flex-version;</seg>
79      </seglistitem>
80    </segmentedlist>
81
82    <variablelist>
83      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
84      <?dbfo list-presentation="list"?>
85      <?dbhtml list-presentation="table"?>
86
87      <varlistentry id="flex">
88        <term><command>flex</command></term>
89        <listitem>
90          <para>A tool for generating programs that recognize patterns in text;
91          it allows for the versatility to specify the rules for pattern-finding,
92          eradicating the need to develop a specialized program</para>
93          <indexterm zone="ch-system-flex flex">
94            <primary sortas="b-flex">flex</primary>
95          </indexterm>
96        </listitem>
97      </varlistentry>
98
99      <varlistentry id="flexpp">
100        <term><command>flex++</command></term>
101        <listitem>
102          <para>Link to <command>flex</command> which makes it generate C++
103          scanner classes</para>
104          <indexterm zone="ch-system-flex flexpp">
105            <primary sortas="b-flex++">flex++</primary>
106          </indexterm>
107        </listitem>
108      </varlistentry>
109
110      <varlistentry id="lex">
111        <term><command>lex</command></term>
112        <listitem>
113          <para>A script that runs <command>flex</command> in
114          <command>lex</command> emulation mode</para>
115          <indexterm zone="ch-system-flex lex">
116            <primary sortas="b-lex">lex</primary>
117          </indexterm>
118        </listitem>
119      </varlistentry>
120
121      <varlistentry id="libfl">
122        <term><filename class="libraryfile">libfl</filename></term>
123        <listitem>
124          <para>The <filename class="libraryfile">flex</filename> library</para>
125          <indexterm zone="ch-system-flex libfl">
126            <primary sortas="c-libfl">libfl</primary>
127          </indexterm>
128        </listitem>
129      </varlistentry>
130
131      <varlistentry id="libfl_pic">
132        <term><filename class="libraryfile">libfl_pic</filename></term>
133        <listitem>
134          <para>The <filename class="libraryfile">flex</filename> library</para>
135          <indexterm zone="ch-system-flex libfl_pic">
136            <primary sortas="c-libfl">libfl_pic</primary>
137          </indexterm>
138        </listitem>
139      </varlistentry>
140
141    </variablelist>
142
143  </sect2>
144
145</sect1>
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