Index: htdocs/contribute.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/contribute.html,v
retrieving revision 1.73
diff -u -r1.73 contribute.html
--- htdocs/contribute.html	4 Aug 2009 05:37:10 -0000	1.73
+++ htdocs/contribute.html	24 Jun 2010 11:30:51 -0000
@@ -235,7 +235,10 @@
 If your version of diff does not support these options, then get the 
 latest version of GNU diff.  Patches against current development (SVN trunk) 
 are preferred to patches against releases, unless your patch is intended
-as a candidate for the release branch.
+as a candidate for the release branch.  The patch should not include generated
+files like <code>configure.in</code>, <code>Makefile.in</code>, etc.  The
+person who eventually commits the patch will take care of regenerating these
+files with the appropriate tool.
 </dd>
 
 </dl>