lfs-book-zh_CN/chapter06/bzip2.xml

<sect1 id="ch06-bzip2" xreflabel="Bzip2">
<title>Installing Bzip2-&bzip2-version;</title>
<?dbhtml filename="bzip2.html" dir="chapter06"?>

<para>The Bzip2 package contains programs for compressing and decompressing
files. On text files they achieve a much better compression than the
traditional <userinput>gzip</userinput>.</para>

<screen>&buildtime; &bzip2-time;
&diskspace; &bzip2-compsize;</screen>

&aa-bzip2-down;
&aa-bzip2-dep;

<sect2><title>&nbsp;</title><para>&nbsp;</para></sect2>

<sect2>
<title>Installation of Bzip2</title>

<para>Prepare Bzip2 for compilation with:</para>

<screen><userinput>make -f Makefile-libbz2_so
make clean</userinput></screen>

<para>The <emphasis>-f</emphasis> flag will cause Bzip2 to be built
using a different <filename>Makefile</filename> file, in this case the
<filename>Makefile-libbz2_so</filename> file, which creates a dynamic
<filename>libbz2.so</filename> library and links the Bzip2 utilities
against it.</para>

<para>Compile the package:</para>

<screen><userinput>make</userinput></screen>

<para>If you are reinstalling Bzip2, you will now first have to do
<userinput>rm -f /usr/bin/bz*</userinput>, otherwise the following
<userinput>make install</userinput> will fail.</para>

<para>Install the programs:</para>

<screen><userinput>make install</userinput></screen>

<para>And install the shared <userinput>bzip2</userinput> binary into the
<filename class="directory">/bin</filename> directory, then make some
necessary symbolic links, and clean up:</para>

<screen><userinput>cp bzip2-shared /bin/bzip2
cp -a libbz2.so* /lib
ln -s ../../lib/libbz2.so.1.0 /usr/lib/libbz2.so
rm /usr/bin/{bunzip2,bzcat,bzip2}
mv /usr/bin/{bzip2recover,bzless,bzmore} /bin
ln -s bzip2 /bin/bunzip2
ln -s bzip2 /bin/bzcat</userinput></screen>

</sect2>

&aa-bzip2-shortdesc;
&aa-bzip2-desc;

</sect1>