Make GCC use the system-wide copy of Zlib rather than its bundled version. Fixes #2718.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9344 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter01/changelog.xml

@@ -40,6 +40,11 @@
     <listitem>
       <para>2010-07-26</para>
       <itemizedlist>
+         <listitem>
+           <para>[matthew] - Make GCC use the system-wide copy of Zlib rather
+           than its bundled version. Fixes
+           <ulink url="&lfs-ticket-root;2718">#2718</ulink>.</para>
+         </listitem>
          <listitem>
            <para>[matthew] - Upgrade to Psmisc-22.12.  Fixes
            <ulink url="&lfs-ticket-root;2717">#2717</ulink>.</para>

chapter06/gcc.xml

@@ -78,12 +78,24 @@ cd ../gcc-build</userinput></screen>
     --libexecdir=/usr/lib --enable-shared \
     --enable-threads=posix --enable-__cxa_atexit \
     --enable-clocale=gnu --enable-languages=c,c++ \
-    --disable-multilib --disable-bootstrap</userinput></screen>
+    --disable-multilib --disable-bootstrap --with-system-zlib</userinput></screen>
 
     <para>Note that for other languages, there are some prerequisites that
     are not available. See the BLFS Book for instructions on how to
     build all the GCC supported languages.</para>
 
+    <variablelist>
+      <title>The meaning of the new configure option:</title>
+
+      <varlistentry>
+        <term><parameter>--with-system-zlib</parameter></term>
+        <listitem>
+          <para>This switch tells GCC to link to the system installed copy of
+          the Zlib library, rather than its own internl copy.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+
     <para>Compile the package:</para>
 
 <screen><userinput remap="make">make</userinput></screen>