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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"?>
<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>
<note>
<para>Zlib is known to build its shared library incorrectly if
<envar>CFLAGS</envar> is specified in the environment. If using
a specified <envar>CFLAGS</envar> variable, be sure to add the
<parameter>-fPIC</parameter> directive to the <envar>CFLAGS</envar>
variable for the duration of the configure command below, then
remove it afterwards.</para>
</note>
<para>Prepare Zlib for compilation:</para>
<screen><userinput>./configure --prefix=/usr --shared --libdir=/lib</userinput></screen>
<para>Compile the package:</para>
<screen><userinput>make</userinput></screen>
<para>To test the results, issue:
<userinput>make check</userinput>.</para>
<para>Install the shared library:</para>
<screen><userinput>make install</userinput></screen>
<para>The previous command installed a <filename
class="extension">.so</filename> file in <filename
class="directory">/lib</filename>. We will remove it and relink it into
<filename class="directory">/usr/lib</filename>:</para>
<screen><userinput>rm -v /lib/libz.so
ln -sfv ../../lib/libz.so.&zlib-version; /usr/lib/libz.so</userinput></screen>
<para>Build the static library:</para>
<screen><userinput>make clean
./configure --prefix=/usr
make</userinput></screen>
<para>To test the results again, issue:
<userinput>make check</userinput>.</para>
<para>Install the static library:</para>
<screen><userinput>make install</userinput></screen>
<para>Fix the permissions on the static library:</para>
<screen><userinput>chmod -v 644 /usr/lib/libz.a</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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