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[linux_from_scratch.git] / BOOK / chapter06 / pcre.xml
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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 ]>
8 <sect1 id="ch-system-pcre" role="wrap">
9   <?dbhtml filename="pcre.html"?>
11   <sect1info condition="script">
12     <productname>pcre</productname>
13     <productnumber>&pcre-version;</productnumber>
14     <address>&pcre-url;</address>
15   </sect1info>
17   <title>PCRE-&pcre-version;</title>
19   <indexterm zone="ch-system-pcre">
20     <primary sortas="a-PCRE">PCRE</primary>
21   </indexterm>
23   <sect2 role="package">
24     <title/>
26     <para>The PCRE package contains Perl Compatible Regular Expression
27     libraries. These are useful for implementing regular expression pattern
28     matching using the same syntax and semantics as Perl 5.</para>
30     <segmentedlist>
31       <segtitle>&buildtime;</segtitle>
32       <segtitle>&diskspace;</segtitle>
34       <seglistitem>
35         <seg>&pcre-ch6-sbu;</seg>
36         <seg>&pcre-ch6-du;</seg>
37       </seglistitem>
38     </segmentedlist>
40   </sect2>
42   <sect2 role="installation">
43     <title>Installation of PCRE</title>
45     <para>Prepare PCRE for compilation:</para>
47 <screen><userinput remap="configure">./configure --prefix=/usr \
48             --docdir=/usr/share/doc/pcre-&pcre-version; \
49             --enable-utf8 \
50             --enable-unicode-properties \
51             --enable-pcregrep-libz \
52             --enable-pcregrep-libbz2</userinput></screen>
54     <variablelist>
55       <title>The meaning of the configure options:</title>
57       <varlistentry>
58         <term><parameter>--enable-utf8</parameter></term>
59         <listitem>
60           <para>This switch includes the code for handling UTF-8 character
61                 strings in the library.</para>
62         </listitem>
63       </varlistentry>
64       <varlistentry>
65         <term><parameter>--enable-unicode-properties</parameter></term>
66         <listitem>
67           <para>This switch enables Unicode properties support.</para>
68         </listitem>
69       </varlistentry>
70       <varlistentry>
71         <term><parameter>--enable-pcregrep-lib*</parameter></term>
72         <listitem>
73           <para>These switches enable the PCRE library to read files compressed
74           with <command>gzip</command> and <command>bzip2</command>.</para>
75         </listitem>
76       </varlistentry>
77     </variablelist>
79     <para>Compile the package:</para>
81 <screen><userinput remap="make">make</userinput></screen>
83     <para>To test the results, issue:</para>
85 <screen><userinput remap="test">make check</userinput></screen>
87     <para>Install the package:</para>
89 <screen><userinput remap="install">make install</userinput></screen>
91     <para>The <command>grep</command> binary will be installed in <filename class="directory">/bin</filename> and will link against the PCRE library; as such,
92 move the library to <filename class="directory">/lib</filename>:</para>
94 <screen><userinput remap="install">mv -v /usr/lib/libpcre.so.* /lib/
95 ln -v -sf ../../lib/libpcre.so.0 /usr/lib/libpcre.so</userinput></screen>
97   </sect2>
99   <sect2 id="contents-pcre" role="content">
100     <title>Contents of PCRE</title>
102     <segmentedlist>
103       <segtitle>Installed programs</segtitle>
104       <segtitle>Installed libraries</segtitle>
105       <segtitle>Installed directories</segtitle>
107       <seglistitem>
108         <seg>pcregrep, pcretest, and pcre-config</seg>
109         <seg>libpcre.{a,so}, libpcrecpp.{a,so} and libpcreposix.{a,so}</seg>
110         <seg>/usr/share/doc/pcre-&pcre-version;</seg>
111       </seglistitem>
112     </segmentedlist>
114     <variablelist>
115       <bridgehead renderas="sect3">Short Descriptions</bridgehead>
116       <?dbfo list-presentation="list"?>
117       <?dbhtml list-presentation="table"?>
119       <varlistentry id="pcregrep">
120         <term><command>pcregrep</command></term>
121         <listitem>
122           <para>A grep that understands Perl compatible regular
123           expressions.</para>
124           <indexterm zone="ch-system-pcre pcregrep">
125             <primary sortas="b-pcre">pcregrep</primary>
126           </indexterm>
127         </listitem>
128       </varlistentry>
130       <varlistentry id="pcretest">
131         <term><command>pcretest</command></term>
132         <listitem>
133           <para>Tests a Perl compatible regular expression</para>
134           <indexterm zone="ch-system-pcre pcretest">
135             <primary sortas="b-pcretest">pcretest</primary>
136           </indexterm>
137         </listitem>
138       </varlistentry>
140       <varlistentry id="pcre-config">
141         <term><command>pcre-config</command></term>
142         <listitem>
143           <para>Used during the compilation process of programs linking to the
144           PCRE libraries</para>
145           <indexterm zone="ch-system-pcre pcre-config">
146             <primary sortas="b-pcre-config">pcre-config</primary>
147           </indexterm>
148         </listitem>
149       </varlistentry>
151       <varlistentry id="libpcre">
152         <term><filename class="libraryfile">libpcre</filename></term>
153         <listitem>
154           <para>Provides functions useful for working with regular
155           expressions</para>
156           <indexterm zone="ch-system-pcre libpcre">
157             <primary sortas="c-libpcre">libpcre</primary>
158           </indexterm>
159         </listitem>
160       </varlistentry>
162       <varlistentry id="libpcrecpp">
163         <term><filename class="libraryfile">libpcrecpp</filename></term>
164         <listitem>
165           <para>Provides C++ wrapper functions for the libpcre library</para>
166           <indexterm zone="ch-system-pcre libpcrecpp">
167             <primary sortas="c-libpcrecpp">libpcrecpp</primary>
168           </indexterm>
169         </listitem>
170       </varlistentry>
172       <varlistentry id="libpcreposix">
173         <term><filename class="libraryfile">libpcreposix</filename></term>
174         <listitem>
175           <para>Provides wrapper functions based on the POSIX regular expression
176           API</para>
177           <indexterm zone="ch-system-pcre libpcreposix">
178             <primary sortas="c-libpcreposix">libpcreposix</primary>
179           </indexterm>
180         </listitem>
181       </varlistentry>
183     </variablelist>
185   </sect2>
187 </sect1>