rewrote bzip2 installation page

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2309 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

1 files changed, 23 insertions, 2 deletions

diff --git a/chapter05/bzip2-inst.xml b/chapter05/bzip2-inst.xml
index d913d4ad8..f6f8183c2 100644
--- a/chapter05/bzip2-inst.xml
+++ b/chapter05/bzip2-inst.xml
@@ -1,10 +1,31 @@
+<sect2><title>&nbsp;</title><para>&nbsp;</para></sect2>
+
 <sect2>
 <title>Installation of Bzip2</title>
 
-<para>Install Bzip2 by running the following commands:</para>
+<para>Since the Bzip2 package has no configure script we can't prepare it
+for compilation. Instead we just run the <userinput>make</userinput>
+program and start compiling, with a few variables changed to suit our
+environment:</para>
 
-<para><screen><userinput>make CC="gcc -static -s" &amp;&amp;
+<para><screen><userinput>make CC="gcc -static -s"
 make PREFIX=$LFS/static install</userinput></screen></para>
 
+<para>The meaning of the make options are:</para>
+
+<itemizedlist>
+
+<listitem><para><userinput>CC="gcc -static -s":</userinput> The Bzip2 package
+does not honour the <emphasis>LDFLAGS</emphasis> variable, so instead we set
+the <emphasis>CC</emphasis> variable which defines which compiler to use.
+The <emphasis>-static</emphasis> option tells the compiler to link all
+programs statically.</para></listitem>
+
+<listitem><para><userinput>PREFIX=$LFS/static:</userinput> Instead of
+passing a <emphasis>--prefix=$LFS/static</emphasis> to a configure script,
+we set the <emphasis>PREFIX</emphasis> variable to accomplish the same goal
+(since there is no configure script present).</para></listitem>
+</itemizedlist>
+
 </sect2>