[24380c7] | 1 | <sect1 id="ch06-zlib">
|
---|
| 2 | <title>Installing Zlib-&zlib-version;</title>
|
---|
| 3 | <?dbhtml filename="zlib.html" dir="chapter06"?>
|
---|
| 4 |
|
---|
| 5 | <screen>Estimated build time: &zlib-time;
|
---|
| 6 | Estimated required disk space: &zlib-compsize;</screen>
|
---|
| 7 |
|
---|
[4ce8193] | 8 | &aa-zlib-shortdesc;
|
---|
[24380c7] | 9 | &aa-zlib-dep;
|
---|
[73aedd1d] | 10 |
|
---|
| 11 | <sect2><title> </title><para> </para></sect2>
|
---|
| 12 |
|
---|
| 13 | <sect2>
|
---|
| 14 | <title>Installation of Zlib</title>
|
---|
| 15 |
|
---|
| 16 | <para>Zlib has a potential buffer overflow in its
|
---|
| 17 | <emphasis>gzprintf()</emphasis> function, that, though difficult to take
|
---|
| 18 | advantage of, should be taken care of by applying this patch:</para>
|
---|
| 19 |
|
---|
| 20 | <screen><userinput>patch -Np1 -i ../&zlib-patch;</userinput></screen>
|
---|
| 21 |
|
---|
| 22 | <para>Now prepare Zlib for compilation:</para>
|
---|
| 23 |
|
---|
| 24 | <screen><userinput>./configure --prefix=/usr --shared</userinput></screen>
|
---|
| 25 |
|
---|
| 26 | <para>Note: Zlib is known to build its shared library incorrectly if a CFLAGS
|
---|
| 27 | is specified in the environment. If you are using your own CFLAGS variables,
|
---|
| 28 | ensure you add the <emphasis role="strong">-fPIC</emphasis> directive during
|
---|
| 29 | this stage, and remove it afterwards.</para>
|
---|
| 30 |
|
---|
| 31 | <para>Compile the package:</para>
|
---|
| 32 |
|
---|
| 33 | <screen><userinput>make</userinput></screen>
|
---|
| 34 |
|
---|
| 35 | <para>Install the shared libraries:</para>
|
---|
| 36 |
|
---|
| 37 | <screen><userinput>make install</userinput></screen>
|
---|
| 38 |
|
---|
| 39 | <para>Now also build the non-shared libraries:</para>
|
---|
| 40 | <screen><userinput>make clean
|
---|
| 41 | ./configure --prefix=/usr
|
---|
| 42 | make</userinput></screen>
|
---|
| 43 |
|
---|
| 44 | <para>This package has a test suite available which can perform a number of
|
---|
| 45 | checks to ensure it built correctly. Should you choose to run it, the
|
---|
| 46 | following command will do so:</para>
|
---|
| 47 |
|
---|
| 48 | <screen><userinput>make test</userinput></screen>
|
---|
| 49 |
|
---|
| 50 | <para>And install the package:</para>
|
---|
| 51 |
|
---|
| 52 | <screen><userinput>make install</userinput></screen>
|
---|
| 53 |
|
---|
| 54 | <para>The shared Zlib library should be installed in the
|
---|
| 55 | <filename>/lib</filename> directory. That way, in the event
|
---|
| 56 | that you must boot without the <filename>/usr</filename>
|
---|
| 57 | directory, vital system programs will still have access to
|
---|
| 58 | the library:</para>
|
---|
| 59 |
|
---|
| 60 | <screen><userinput>mv /usr/lib/libz.so.* /lib</userinput></screen>
|
---|
| 61 |
|
---|
| 62 | <para>The <filename>/usr/lib/libz.so</filename> symlink is
|
---|
| 63 | linked to a file which no longer exists, because we moved
|
---|
| 64 | it. Create a symbolic link to the new location of the
|
---|
| 65 | library:</para>
|
---|
| 66 |
|
---|
| 67 | <screen><userinput>ln -sf ../../lib/libz.so.1 /usr/lib/libz.so</userinput></screen>
|
---|
| 68 |
|
---|
| 69 | <para>Zlib does not install its manual page. Issue the
|
---|
| 70 | following command to install this documentation:</para>
|
---|
| 71 |
|
---|
| 72 | <screen><userinput>cp zlib.3 /usr/share/man/man3</userinput></screen>
|
---|
| 73 |
|
---|
| 74 | </sect2>
|
---|
[24380c7] | 75 |
|
---|
| 76 | </sect1>
|
---|
| 77 |
|
---|