@@ -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
@@ -18,6 +18,14 @@
 
 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