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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34 | <seg>&flex-fin-sbu;</seg>
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35 | <seg>&flex-fin-du;</seg>
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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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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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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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