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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3116 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
79 lines
2.5 KiB
XML
79 lines
2.5 KiB
XML
<sect1 id="ch06-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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<screen>Estimated build time: &zlib-time;
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Estimated required disk space: &zlib-compsize;</screen>
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&aa-zlib-shortdesc;
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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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<para>Zlib has a potential buffer overflow in its
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<emphasis>gzprintf()</emphasis> function, that, though difficult to take
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advantage of, should be taken care of by applying this patch:</para>
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<screen><userinput>patch -Np1 -i ../&zlib-patch;</userinput></screen>
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<para>Now prepare Zlib for compilation:</para>
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<screen><userinput>./configure --prefix=/usr --shared</userinput></screen>
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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 role="strong">-fPIC</emphasis> directive to your
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CFLAGS for the duration of the above command, then remove it
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afterwards.</para></note>
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<para>Compile the package:</para>
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<screen><userinput>make</userinput></screen>
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<para>Install the shared libraries:</para>
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<screen><userinput>make install</userinput></screen>
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<para>Now also build the non-shared libraries:</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>This package has a test suite available which can perform a number of
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checks to ensure it built correctly. Should you choose to run it, the
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following command will do so:</para>
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<screen><userinput>make test</userinput></screen>
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<para>And install the package:</para>
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<screen><userinput>make install</userinput></screen>
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<para>The shared Zlib library should be installed in the
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<filename>/lib</filename> directory. That way, in the event
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that you must boot without the <filename>/usr</filename>
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directory, vital system programs will still have access to
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the library:</para>
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<screen><userinput>mv /usr/lib/libz.so.* /lib</userinput></screen>
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<para>The <filename>/usr/lib/libz.so</filename> symlink is
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linked to a file which no longer exists, because we moved
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it. Create a symbolic link to the new location of the
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library:</para>
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<screen><userinput>ln -sf ../../lib/libz.so.1 /usr/lib/libz.so</userinput></screen>
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<para>Zlib does not install its manual page. Issue the
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following command to install this documentation:</para>
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<screen><userinput>cp zlib.3 /usr/share/man/man3</userinput></screen>
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</sect2>
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</sect1>
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