[src/trunk]: src Note that update builds are broken if MKDTRACE got enabled f...

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

details:   https://anonhg.NetBSD.org/src/rev/4cd93c91502d
branches:  trunk
changeset: 813355:4cd93c91502d
user:      martin <martin%NetBSD.org@localhost>
date:      Mon Jan 25 09:24:29 2016 +0000

description:
Note that update builds are broken if MKDTRACE got enabled for your
platform.

diffstat:

 UPDATING |  10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diffs (24 lines):

diff -r 40f380b1b61e -r 4cd93c91502d UPDATING
--- a/UPDATING  Mon Jan 25 04:24:24 2016 +0000
+++ b/UPDATING  Mon Jan 25 09:24:29 2016 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.263 2015/09/19 18:31:41 dholland Exp $
+$NetBSD: UPDATING,v 1.264 2016/01/25 09:24:29 martin 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
@@ -19,6 +19,14 @@
 Recent changes:
 ^^^^^^^^^^^^^^^
 
+20160125:
+       Dtrace has been enabled by default on some architectures.
+       When doing an update build, make sure to clean the etc/mtree
+       object directory before starting the build - otherwise the
+       needed directories in destdir will not be created.
+       An easy way to do this is:
+          cd src/etc/mtree && $TOOLDIR/bin/nbmake-$arch cleandir
+
 20150818:
        New acpica requires "make cleandir" in src/external/bsd/acpica
        again.