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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3234 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
86 lines
2.7 KiB
XML
86 lines
2.7 KiB
XML
<sect1 id="ch-system-zlib" xreflabel="Zlib">
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<title>Installing Zlib-&zlib-version;</title>
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<?dbhtml filename="zlib.html" dir="chapter06"?>
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<para>The Zlib package contains compression and uncompression routines used by
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some programs.</para>
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<screen>&buildtime; &zlib-time;
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&diskspace; &zlib-compsize;</screen>
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&aa-zlib-down;
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&aa-zlib-dep;
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<sect2><title> </title><para> </para></sect2>
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<sect2>
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<title>Installation of Zlib</title>
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<note><para>Zlib is known to build its shared library incorrectly if CFLAGS is
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specified in the environment. If you are using your own CFLAGS variable, be
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sure to add the <emphasis>-fPIC</emphasis> directive to your CFLAGS for the
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duration of the below <command>configure</command> command, then remove it
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afterwards.</para></note>
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<para>Prepare Zlib for compilation:</para>
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<screen><userinput>./configure --prefix=/usr --shared</userinput></screen>
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<para>Compile the package:</para>
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<screen><userinput>make</userinput></screen>
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<para>To have the results tested, issue:
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<userinput>make check</userinput>.</para>
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<screen><userinput>make check</userinput></screen>
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<para>Install the shared library:</para>
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<screen><userinput>make install</userinput></screen>
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<para>Now also build the non-shared (static) library:</para>
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<screen><userinput>make clean
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./configure --prefix=/usr
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make</userinput></screen>
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<para>To have the results tested, issue:
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<userinput>make check</userinput>.</para>
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<para>Install the static library:</para>
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<screen><userinput>make install</userinput></screen>
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<para>And fix the permissions on the static library:</para>
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<screen><userinput>chmod 644 /usr/lib/libz.a</userinput></screen>
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<para>It is good policy and common practice to place important libraries into
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the <filename class="directory">/lib</filename> directory. This matters most
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in scenarios where <filename class="directory">/usr</filename> is on a
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separate partition. Essentially, the run-time components of any libraries
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depended upon by programs in <filename class="directory">/bin</filename> or
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<filename class="directory">/sbin</filename> should reside in
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<filename class="directory">/lib</filename> so that they are on the root
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partition and available in the event of
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<filename class="directory">/usr</filename> being inaccessible.</para>
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<para>Therefore we move the run-time components of the shared Zlib into
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<filename class="directory">/lib</filename> by issuing the following
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command:</para>
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<screen><userinput>mv /usr/lib/libz.so.* /lib</userinput></screen>
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<para>Now we need to fix up the <filename>/usr/lib/libz.so</filename> symlink
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because we just moved the location of the file it points to:</para>
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<screen><userinput>ln -sf ../../lib/libz.so.1 /usr/lib/libz.so</userinput></screen>
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</sect2>
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&aa-zlib-shortdesc;
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&aa-zlib-desc;
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</sect1>
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