[src/trunk]: src Add a generic note about GCC's error on changed variables an...

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

details:   https://anonhg.NetBSD.org/src/rev/4592b3c90b1f
branches:  trunk
changeset: 764034:4592b3c90b1f
user:      joerg <joerg%NetBSD.org@localhost>
date:      Sun Apr 10 20:22:32 2011 +0000

description:
Add a generic note about GCC's error on changed variables and a specific
entry for the sysroot related changes breaking MKUPDATE.

diffstat:

 UPDATING |  11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diffs (29 lines):

diff -r afe8b64628a6 -r 4592b3c90b1f UPDATING
--- a/UPDATING  Sun Apr 10 16:52:36 2011 +0000
+++ b/UPDATING  Sun Apr 10 20:22:32 2011 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.222 2011/04/10 08:29:31 plunky Exp $
+$NetBSD: UPDATING,v 1.223 2011/04/10 20:22:32 joerg 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 +15,11 @@
 
 Recent changes:
 ^^^^^^^^^^^^^^^
+20110410:
+       The configuration of src/tools/gcc has changed. Update builds
+       have to remove the stale content explicitly. See the note toward
+       the end of the file for details.
+
 20110328:
        Building the Xorg binary was moved into a subdirectory to fix
        ordering issues with "make all". It may be necessary to remove
@@ -540,3 +545,7 @@
 
 Symptom:lint does not understand the '-X' option
 Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
+
+Symptom:Update build fails in src/tools/gcc complaining that a variable
+       (e.g. CPPFLAGS) has changed since the previous run.
+Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.