source: BOOK/final-system/common/flex.xml@ e0f8d57

clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since e0f8d57 was 686839b, checked in by William Harrington <kb0iic@…>, 11 years ago

Add screen tags around userinput test commands and remap userinput for test commands as remap="test".

  • 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</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="f">Install the package:</para>
41
42<screen os="g"><userinput>make install</userinput></screen>
43
44 <para os="h">There are some packages that expect to find the
45 <filename class="libraryfile">lex</filename> library in <filename
46 class="directory">/usr/lib</filename>. Create a symlink to account for
47 this:</para>
48
49<screen os="i"><userinput>ln -sv libfl.a /usr/lib/libl.a</userinput></screen>
50
51 <para os="j">A few programs do not know about <command>flex</command> yet and
52 try to run its predecessor, <command>lex</command>. To support those
53 programs, create a wrapper script named <filename>lex</filename> that
54 calls <filename>flex</filename> in <command>lex</command> emulation
55 mode:</para>
56
57<screen os="k"><userinput>cat &gt; /usr/bin/lex &lt;&lt; "EOF"
58<literal>#!/bin/sh
59# Begin /usr/bin/lex
60
61exec /usr/bin/flex -l "$@"
62
63# End /usr/bin/lex</literal>
64EOF
65chmod -v 755 /usr/bin/lex</userinput></screen>
66
67 </sect2>
68
69 <sect2 id="contents-flex" role="content">
70 <title>Contents of Flex</title>
71
72 <segmentedlist>
73 <segtitle>Installed programs</segtitle>
74 <segtitle>Installed libraries</segtitle>
75
76 <seglistitem>
77 <seg>flex and lex</seg>
78 <seg>libfl.a and libfl_pic.a</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.a">
122 <term><filename class="libraryfile">libfl.a</filename></term>
123 <listitem>
124 <para>The <filename class="libraryfile">flex</filename> library</para>
125 <indexterm zone="ch-system-flex libfl.a">
126 <primary sortas="c-libfl.a">libfl.a</primary>
127 </indexterm>
128 </listitem>
129 </varlistentry>
130
131 <varlistentry id="libfl_pic.a">
132 <term><filename class="libraryfile">libfl_pic.a</filename></term>
133 <listitem>
134 <para>The <filename class="libraryfile">flex</filename> library</para>
135 <indexterm zone="ch-system-flex libfl_pic.a">
136 <primary sortas="c-libfl.a">libfl_pic.a</primary>
137 </indexterm>
138 </listitem>
139 </varlistentry>
140
141 </variablelist>
142
143 </sect2>
144
145</sect1>
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