Additions the the building guide

[Volker Stolz]

Objections?
-- 
Volker Stolz * http://www-i2.informatik.rwth-aachen.de/stolz/ * PGP * S/MIME

Index: building.sgml
===================================================================
RCS file: /home/cvs/root/fptools/docs/building/building.sgml,v
retrieving revision 1.50
diff -u -r1.50 building.sgml
--- building.sgml       13 May 2003 08:17:13 -0000      1.50
+++ building.sgml       28 May 2003 08:44:21 -0000
@@ -456,6 +456,10 @@
           <literal>hslibs</literal> and <literal>libraries</literal>
           modules (for a full list of the projects available, see
           <xref linkend="projects">).</para>
+
+         <para>Remeber that if you do not have <literal>happy</literal>
+          installed, you need to check it out as well.</para>
+
        </listitem>
       </itemizedlist>
     </sect2>
@@ -1211,6 +1215,12 @@
           boxes&mdash;you may need to fiddle with GHC's
           <option>-monly-N-regs</option> option; see the User's
           Guide)</para>
+
+         <para>It is currently not possible to build GHC with GCC 3.3
+          because of sustantial changes to the preprocessor
+          <literal>cpp</literal> (most notably the new feature of
+          stripping newlines in multi-line arguments to macros, which of
+          course is the death of Haskell's layout based syntax).</para>
        </listitem>
       </varlistentry>