[src/trunk]: src Note build fallout from vadvise removal.

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

details:   https://anonhg.NetBSD.org/src/rev/90cb1b771b34
branches:  trunk
changeset: 828674:90cb1b771b34
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Dec 26 11:40:47 2017 +0000

description:
Note build fallout from vadvise removal.

diffstat:

 UPDATING |  9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diffs (23 lines):

diff -r 68b3c9e4b821 -r 90cb1b771b34 UPDATING
--- a/UPDATING  Tue Dec 26 08:30:57 2017 +0000
+++ b/UPDATING  Tue Dec 26 11:40:47 2017 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.287 2017/10/13 07:04:58 kre Exp $
+$NetBSD: UPDATING,v 1.288 2017/12/26 11:40:47 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 +19,13 @@
 Recent changes:
 ^^^^^^^^^^^^^^^
 
+20171225:
+       removal of the vadvise syscall requires manual removal of all
+       associated files from the libc build object directory (including
+       the .depend files) - a command like
+               cd $OBJ && find . -type d -name libc | xargs rm -rf
+       or a one time build without -u will do.
+
 20171010:
        a change to the build structure of external/bsd/acpica/bin/iasl
        means that its objdir (or *.d and .depend at least) might need