[src/trunk]: src add a note about cleaning the tree for GCC 4.5.

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3b4d4fb84486
branches:  trunk
changeset: 768039:3b4d4fb84486
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sat Aug 06 23:07:14 2011 +0000

description:
add a note about cleaning the tree for GCC 4.5.

diffstat:

 UPDATING |  8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diffs (22 lines):

diff -r e83996ecbb82 -r 3b4d4fb84486 UPDATING
--- a/UPDATING  Sat Aug 06 20:46:42 2011 +0000
+++ b/UPDATING  Sat Aug 06 23:07:14 2011 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.225 2011/08/04 03:48:11 matt Exp $
+$NetBSD: UPDATING,v 1.226 2011/08/06 23:07:14 mrg Exp $
 
 This file (UPDATING) is intended to be a brief reference to recent
 changes that might cause problems in the build process, and a guide for
@@ -15,6 +15,12 @@
 
 Recent changes:
 ^^^^^^^^^^^^^^^
+20110805:
+       The update to GCC 4.5.3 requires a non-trivial portion of
+       the tree to be cleaned.  Best to delete both objdir and
+       DESTDIR before running this update.  So far, only the
+       sparc64, mips and powerpc platforms have changed.
+
 20110803:
        The layout of external/public-domain/xz has changed. To do an
        update build you will have to remove the contents of the OBJDIR