[fcc02767] | 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-system-flex" role="wrap">
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| 9 | <?dbhtml filename="flex.html"?>
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| 10 |
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| 11 | <sect1info condition="script">
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| 12 | <productname>flex</productname>
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| 13 | <productnumber>&flex-version;</productnumber>
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| 14 | <address>&flex-url;</address>
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| 15 | </sect1info>
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| 16 |
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| 17 | <title>Flex-&flex-version;</title>
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| 18 |
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| 19 | <indexterm zone="ch-system-flex">
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| 20 | <primary sortas="a-Flex">Flex</primary>
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| 21 | </indexterm>
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| 22 |
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| 23 | <sect2 role="package">
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| 24 | <title/>
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| 25 |
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| 26 | <para>The Flex package contains a utility for generating programs that
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| 27 | recognize patterns in text.</para>
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| 28 |
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| 29 | <segmentedlist>
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| 30 | <segtitle>&buildtime;</segtitle>
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| 31 | <segtitle>&diskspace;</segtitle>
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| 32 |
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| 33 | <seglistitem>
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[fb386e0] | 34 | <seg>&flex-fin-sbu;</seg>
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| 35 | <seg>&flex-fin-du;</seg>
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[fcc02767] | 36 | </seglistitem>
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| 37 | </segmentedlist>
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| 38 |
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| 39 | </sect2>
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| 40 |
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| 41 | <sect2 role="installation">
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| 42 | <title>Installation of Flex</title>
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| 43 |
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| 44 | <!--
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| 45 | <para>First, fix a problem introduced with glibc-2.26:</para>
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| 46 |
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| 47 | <screen><userinput remap="pre">sed -i "/math.h/a #include <malloc.h>" src/flexdef.h</userinput></screen>
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| 48 |
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| 49 | <para>The build procedure assumes the <application>help2man</application>
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| 50 | program is available to create a man page from the executable - -help option.
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| 51 | This is not present, so we use an environment variable to skip this process.
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| 52 | Now, prepare Flex for compilation:</para> -->
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| 53 |
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| 54 | <para>Prepare Flex for compilation:</para>
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| 55 |
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[cd152f22] | 56 | <screen><userinput remap="configure">./configure --prefix=/usr \
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| 57 | --docdir=/usr/share/doc/flex-&flex-version; \
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| 58 | --disable-static</userinput></screen>
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[fcc02767] | 59 |
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| 60 | <para>Compile the package:</para>
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| 61 |
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| 62 | <screen><userinput remap="make">make</userinput></screen>
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| 63 |
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| 64 | <para>To test the results (about 0.5 SBU), issue:</para>
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| 65 |
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| 66 | <screen><userinput remap="test">make check</userinput></screen>
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| 67 |
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| 68 | <para>Install the package:</para>
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| 69 |
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| 70 | <screen><userinput remap="install">make install</userinput></screen>
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| 71 |
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| 72 | <para>A few programs do not know about <command>flex</command> yet and
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| 73 | try to run its predecessor, <command>lex</command>. To support those
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| 74 | programs, create a symbolic link named <filename>lex</filename> that
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| 75 | runs <filename>flex</filename> in <command>lex</command> emulation
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| 76 | mode:</para>
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| 77 |
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| 78 | <screen><userinput remap="install">ln -sv flex /usr/bin/lex</userinput></screen>
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| 79 |
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| 80 | </sect2>
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| 81 |
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| 82 | <sect2 id="contents-flex" role="content">
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| 83 | <title>Contents of Flex</title>
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| 84 |
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| 85 | <segmentedlist>
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| 86 | <segtitle>Installed programs</segtitle>
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| 87 | <segtitle>Installed libraries</segtitle>
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| 88 | <segtitle>Installed directory</segtitle>
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| 89 |
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| 90 | <seglistitem>
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| 91 | <seg>flex, flex++ (link to flex), and lex (link to flex)</seg>
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| 92 | <seg>libfl.so</seg>
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| 93 | <seg>/usr/share/doc/flex-&flex-version;</seg>
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| 94 | </seglistitem>
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| 95 | </segmentedlist>
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| 96 |
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| 97 | <variablelist>
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| 98 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 99 | <?dbfo list-presentation="list"?>
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| 100 | <?dbhtml list-presentation="table"?>
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| 101 |
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| 102 | <varlistentry id="flex">
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| 103 | <term><command>flex</command></term>
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| 104 | <listitem>
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| 105 | <para>A tool for generating programs that recognize patterns in text;
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| 106 | it allows for the versatility to specify the rules for pattern-finding,
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| 107 | eradicating the need to develop a specialized program</para>
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| 108 | <indexterm zone="ch-system-flex flex">
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| 109 | <primary sortas="b-flex">flex</primary>
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| 110 | </indexterm>
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| 111 | </listitem>
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| 112 | </varlistentry>
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| 113 |
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| 114 | <varlistentry id="flexpp">
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| 115 | <term><command>flex++</command></term>
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| 116 | <listitem>
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| 117 | <para>An extension of flex, is used for generating C++ code
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| 118 | and classes. It is a symbolic link to <command>flex</command></para>
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| 119 | <indexterm zone="ch-system-flex flexpp">
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| 120 | <primary sortas="b-flex++">flex++</primary>
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| 121 | </indexterm>
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| 122 | </listitem>
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| 123 | </varlistentry>
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| 124 |
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| 125 | <varlistentry id="lex">
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| 126 | <term><command>lex</command></term>
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| 127 | <listitem>
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| 128 | <para>A symbolic link that runs <command>flex</command> in
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| 129 | <command>lex</command> emulation mode</para>
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| 130 | <indexterm zone="ch-system-flex lex">
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| 131 | <primary sortas="b-lex">lex</primary>
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| 132 | </indexterm>
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| 133 | </listitem>
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| 134 | </varlistentry>
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| 135 |
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| 136 | <varlistentry id="libfl">
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| 137 | <term><filename class="libraryfile">libfl</filename></term>
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| 138 | <listitem>
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| 139 | <para>The <filename class="libraryfile">flex</filename> library</para>
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| 140 | <indexterm zone="ch-system-flex libfl">
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| 141 | <primary sortas="c-libfl">libfl</primary>
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| 142 | </indexterm>
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| 143 | </listitem>
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| 144 | </varlistentry>
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| 145 |
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| 146 | </variablelist>
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| 147 |
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| 148 | </sect2>
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| 149 |
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| 150 | </sect1>
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