remove the "-unreg" flag and the unregisterised way, see #1008

[ghc-hetmet.git] / docs / users_guide / debugging.xml

diff --git a/docs/users_guide/debugging.xml b/docs/users_guide/debugging.xml
index 4ab4379..0f1fd18 100644 (file)
--- a/docs/users_guide/debugging.xml
+++ b/docs/users_guide/debugging.xml
@@ -601,21 +601,9 @@ Main.skip2{-r1L6-} =
     of platform-specific code that needs to be written in order to get
     unregisterised compilation going is usually fairly small.</para>
 
-    <variablelist>
-      <varlistentry>
-       <term>
-          <option>-unreg</option>:
-          <indexterm><primary><option>-unreg</option></primary></indexterm>
-        </term>
-       <listitem>
-         <para>Compile via vanilla ANSI C only, turning off
-         platform-specific optimisations.  NOTE: in order to use
-         <option>-unreg</option>, you need to have a set of libraries
-         (including the RTS) built for unregisterised compilation.
-         This amounts to building GHC with way "u" enabled.</para>
-       </listitem>
-      </varlistentry>
-    </variablelist>
+   <para>Unregisterised compilation cannot be selected at
+   compile-time; you have to build GHC with the appropriate options
+   set.  Consult the GHC Building Guide for details.</para>
   </sect2>
 
 </sect1>