Disable deprecated mpx code in gcc

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11457 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter01/changelog.xml

@@ -42,6 +42,15 @@
     <listitem revision="sysv"> or <listitem revision="systemd"> as
     appropriate for the entry or if needed the entire day's listitem.
 -->
+    <listitem>
+      <para>2018-08-25</para>
+      <itemizedlist>
+        <listitem>
+          <para>[bdubbs] - Disable deprecated mpx code in gcc.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem revision="sysv">
       <para>2018-08-20</para>
       <itemizedlist>

chapter06/gcc.xml

@@ -68,6 +68,7 @@ cd       build</userinput></screen>
              --enable-languages=c,c++ \
              --disable-multilib       \
              --disable-bootstrap      \
+             --disable-libmpx         \
              --with-system-zlib</userinput></screen>
 
     <para>Note that for other languages, there are some prerequisites that
@@ -86,6 +87,15 @@ cd       build</userinput></screen>
         </listitem>
       </varlistentry>
  
+      <varlistentry>
+        <term><parameter>--disable-libmpx</parameter></term>
+        <listitem>
+          <para>This switch tells GCC to not build mpx (Memory Protection
+          Extensions) that can cause problems on some processors. It has
+          been removed from the next version of gcc.</para>
+        </listitem>
+      </varlistentry>
+
       <varlistentry>
         <term><parameter>--with-system-zlib</parameter></term>
         <listitem>