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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../general.ent">
%general-entities;
]>
<sect1 id="ch-system-zlib" role="wrap">
<?dbhtml filename="zlib.html"?>
<sect1info condition="script">
<productname>zlib</productname>
<productnumber>&zlib-version;</productnumber>
<address>&zlib-url;</address>
</sect1info>
<title>Zlib-&zlib-version;</title>
<indexterm zone="ch-system-zlib">
<primary sortas="a-Zlib">Zlib</primary>
</indexterm>
<sect2 role="package">
<title/>
<para>The Zlib package contains compression and decompression routines used by
some programs.</para>
<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem>
<seg>&zlib-ch6-sbu;</seg>
<seg>&zlib-ch6-du;</seg>
</seglistitem>
</segmentedlist>
</sect2>
<sect2 role="installation">
<title>Installation of Zlib</title>
<para>First, fix a typo in the package header file:</para>
<screen><userinput remap="pre">sed -i 's/ifdef _LARGEFILE64_SOURCE/ifndef _LARGEFILE64_SOURCE/' zlib.h</userinput></screen>
<para>Prepare Zlib for compilation:</para>
<screen><userinput remap="configure">CFLAGS='-mstackrealign -fPIC -O3' ./configure --prefix=/usr</userinput></screen>
<variablelist>
<title>The meaning of the new configure environment variable:</title>
<varlistentry>
<term><envar>CFLAGS='-mstackrealign -fPIC -O3'</envar></term>
<listitem>
<para>Setting CFLAGS overrides the default optimization in the
package to prevent some run time errors. Note that the -mstackrealign
may cause build failures in non-Intel architecture systems.</para>
</listitem>
</varlistentry>
</variablelist>
<para>Compile the package:</para>
<screen><userinput remap="make">make</userinput></screen>
<para>To test the results, issue:</para>
<screen><userinput remap="test">make check</userinput></screen>
<para>Install the package:</para>
<screen><userinput remap="install">make install</userinput></screen>
<para>The shared library needs to be moved to
<filename class="directory">/lib</filename>, and as a result the
<filename class="extension">.so</filename> file in
<filename class="directory">/usr/lib</filename> will need to be recreated:</para>
<screen><userinput remap="install">mv -v /usr/lib/libz.so.* /lib
ln -sfv ../../lib/libz.so.&zlib-version; /usr/lib/libz.so</userinput></screen>
</sect2>
<sect2 id="contents-zlib" role="content">
<title>Contents of Zlib</title>
<segmentedlist>
<segtitle>Installed libraries</segtitle>
<seglistitem>
<seg>libz.{a,so}</seg>
</seglistitem>
</segmentedlist>
<variablelist>
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>
<varlistentry id="libz">
<term><filename class="libraryfile">libz</filename></term>
<listitem>
<para>Contains compression and decompression functions used by
some programs</para>
<indexterm zone="ch-system-zlib libz">
<primary sortas="c-libz">libz</primary>
</indexterm>
</listitem>
</varlistentry>
</variablelist>
</sect2>
</sect1>
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