[3f8be484] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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[aa18ac0] | 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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[3f8be484] | 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-system-flex" role="wrap"> |
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| 9 | <?dbhtml filename="flex.html"?> |
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| 10 | |
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| 11 | <title>Flex-&flex-version;</title> |
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| 12 | |
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| 13 | <indexterm zone="ch-system-flex"> |
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| 14 | <primary sortas="a-Flex">Flex</primary> |
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| 15 | </indexterm> |
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| 16 | |
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| 17 | <sect2 role="package"> |
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| 18 | <title/> |
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| 19 | |
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| 20 | <para>The Flex package contains a utility for generating programs that |
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| 21 | recognize patterns in text.</para> |
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| 22 | |
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| 23 | </sect2> |
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| 24 | |
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| 25 | <sect2 role="installation"> |
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| 26 | <title>Installation of Flex</title> |
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| 27 | |
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[4bb4b626] | 28 | <para os="a">Prepare Flex for compilation:</para> |
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[3f8be484] | 29 | |
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[9784318] | 30 | <screen os="b"><userinput>./configure --prefix=/usr --docdir=/usr/share/doc/flex-&flex-version;</userinput></screen> |
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[3f8be484] | 31 | |
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[4bb4b626] | 32 | <para os="c">Compile the package:</para> |
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[3f8be484] | 33 | |
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[4bb4b626] | 34 | <screen os="d"><userinput>make</userinput></screen> |
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[3f8be484] | 35 | |
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[686839b] | 36 | <para os="e">To test the results, issue:</para> |
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| 37 | |
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| 38 | <screen os="e2"><userinput remap="test">make check</userinput></screen> |
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[3f8be484] | 39 | |
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[41a5f16] | 40 | <para os="e3">The test suite will report 3 failures for tests that |
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| 41 | use <command>bison</command>, which is not installed yet. For full |
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| 42 | test coverage, you can run Flex's test suite again after Bison |
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| 43 | is installed.</para> |
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| 44 | |
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[4bb4b626] | 45 | <para os="f">Install the package:</para> |
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[3f8be484] | 46 | |
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[4bb4b626] | 47 | <screen os="g"><userinput>make install</userinput></screen> |
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[3f8be484] | 48 | |
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[a62153d] | 49 | <para os="h">A few programs do not know about <command>flex</command> yet and |
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[3f8be484] | 50 | try to run its predecessor, <command>lex</command>. To support those |
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| 51 | programs, create a wrapper script named <filename>lex</filename> that |
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| 52 | calls <filename>flex</filename> in <command>lex</command> emulation |
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| 53 | mode:</para> |
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| 54 | |
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[a62153d] | 55 | <screen os="i"><userinput>cat > /usr/bin/lex << "EOF" |
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[3f8be484] | 56 | <literal>#!/bin/sh |
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| 57 | # Begin /usr/bin/lex |
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| 58 | |
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| 59 | exec /usr/bin/flex -l "$@" |
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| 60 | |
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| 61 | # End /usr/bin/lex</literal> |
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| 62 | EOF |
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[94e6142] | 63 | chmod -v 755 /usr/bin/lex</userinput></screen> |
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[3f8be484] | 64 | |
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| 65 | </sect2> |
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| 66 | |
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| 67 | <sect2 id="contents-flex" role="content"> |
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| 68 | <title>Contents of Flex</title> |
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| 69 | |
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| 70 | <segmentedlist> |
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| 71 | <segtitle>Installed programs</segtitle> |
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[f5e37b2] | 72 | <segtitle>Installed libraries</segtitle> |
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[c873165] | 73 | <segtitle>Installed directory</segtitle> |
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[3f8be484] | 74 | |
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| 75 | <seglistitem> |
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[c2102b28] | 76 | <seg>flex, flex++ (link to flex), lex</seg> |
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| 77 | <seg>libfl.[a,so], libfl_pic.[a,so]</seg> |
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[c873165] | 78 | <seg>/usr/share/doc/flex-&flex-version;</seg> |
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[3f8be484] | 79 | </seglistitem> |
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| 80 | </segmentedlist> |
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| 81 | |
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| 82 | <variablelist> |
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| 83 | <bridgehead renderas="sect3">Short Descriptions</bridgehead> |
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| 84 | <?dbfo list-presentation="list"?> |
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| 85 | <?dbhtml list-presentation="table"?> |
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| 86 | |
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| 87 | <varlistentry id="flex"> |
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| 88 | <term><command>flex</command></term> |
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| 89 | <listitem> |
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| 90 | <para>A tool for generating programs that recognize patterns in text; |
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| 91 | it allows for the versatility to specify the rules for pattern-finding, |
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| 92 | eradicating the need to develop a specialized program</para> |
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| 93 | <indexterm zone="ch-system-flex flex"> |
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| 94 | <primary sortas="b-flex">flex</primary> |
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| 95 | </indexterm> |
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| 96 | </listitem> |
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| 97 | </varlistentry> |
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| 98 | |
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[2b220db9] | 99 | <varlistentry id="flexpp"> |
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| 100 | <term><command>flex++</command></term> |
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| 101 | <listitem> |
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| 102 | <para>Link to <command>flex</command> which makes it generate C++ |
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| 103 | scanner classes</para> |
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| 104 | <indexterm zone="ch-system-flex flexpp"> |
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| 105 | <primary sortas="b-flex++">flex++</primary> |
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| 106 | </indexterm> |
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| 107 | </listitem> |
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| 108 | </varlistentry> |
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| 109 | |
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[3f8be484] | 110 | <varlistentry id="lex"> |
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| 111 | <term><command>lex</command></term> |
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| 112 | <listitem> |
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| 113 | <para>A script that runs <command>flex</command> in |
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| 114 | <command>lex</command> emulation mode</para> |
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| 115 | <indexterm zone="ch-system-flex lex"> |
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| 116 | <primary sortas="b-lex">lex</primary> |
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| 117 | </indexterm> |
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| 118 | </listitem> |
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| 119 | </varlistentry> |
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| 120 | |
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[06c4516] | 121 | <varlistentry id="libfl"> |
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| 122 | <term><filename class="libraryfile">libfl</filename></term> |
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[3f8be484] | 123 | <listitem> |
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| 124 | <para>The <filename class="libraryfile">flex</filename> library</para> |
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[06c4516] | 125 | <indexterm zone="ch-system-flex libfl"> |
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| 126 | <primary sortas="c-libfl">libfl</primary> |
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[3f8be484] | 127 | </indexterm> |
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| 128 | </listitem> |
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| 129 | </varlistentry> |
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| 130 | |
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[06c4516] | 131 | <varlistentry id="libfl_pic"> |
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| 132 | <term><filename class="libraryfile">libfl_pic</filename></term> |
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[8053eec] | 133 | <listitem> |
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| 134 | <para>The <filename class="libraryfile">flex</filename> library</para> |
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[06c4516] | 135 | <indexterm zone="ch-system-flex libfl_pic"> |
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| 136 | <primary sortas="c-libfl">libfl_pic</primary> |
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[8053eec] | 137 | </indexterm> |
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| 138 | </listitem> |
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| 139 | </varlistentry> |
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| 140 | |
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[3f8be484] | 141 | </variablelist> |
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| 142 | |
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| 143 | </sect2> |
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| 144 | |
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| 145 | </sect1> |
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