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51 lines
1.7 KiB
XML
51 lines
1.7 KiB
XML
<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 gzprintf() function,
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that, though difficult to take advantage of, should be taken care of. Do
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so by applying this patch:</para>
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<para><screen><userinput>patch -Np1 -i ../zlib-&zlib-patch-version;.patch</userinput></screen></para>
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<para>Prepare Zlib to be compiled:</para>
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<para><screen><userinput>CFLAGS="$CFLAGS -fPIC" \
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./configure --prefix=/usr --shared</userinput></screen></para>
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<para>The <emphasis>-fPIC</emphasis> flag helps to assure
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quality in the dynamic zlib library.</para>
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<para><screen><userinput>make</userinput></screen></para>
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<para>Install the libraries:</para>
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<para><screen><userinput>make install &&
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make clean &&
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./configure --prefix=/usr &&
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make &&
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make install</userinput></screen></para>
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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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<para><screen><userinput>mv /usr/lib/libz.so.* /lib</userinput></screen></para>
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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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<para><screen><userinput>ln -sf ../../lib/libz.so.1 /usr/lib/libz.so</userinput></screen></para>
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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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<para><screen><userinput>cp zlib.3 /usr/share/man/man3</userinput></screen></para>
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</sect2>
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