[src/trunk]: src build without -u does not work because of the dependencies a...

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

details:   https://anonhg.NetBSD.org/src/rev/705ddcc6a625
branches:  trunk
changeset: 828685:705ddcc6a625
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Dec 26 20:04:03 2017 +0000

description:
build without -u does not work because of the dependencies and the stale
files. Be more explicit with instructions.

diffstat:

 UPDATING |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (23 lines):

diff -r 4fa9ed474d53 -r 705ddcc6a625 UPDATING
--- a/UPDATING  Tue Dec 26 18:44:52 2017 +0000
+++ b/UPDATING  Tue Dec 26 20:04:03 2017 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.288 2017/12/26 11:40:47 martin Exp $
+$NetBSD: UPDATING,v 1.289 2017/12/26 20:04:03 christos 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
@@ -22,9 +22,11 @@
 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
+       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.
+       For architectures that support multiple "compat" binary targets,
+       you'll need to cleanup both the regular libc directory and the
+       compat one.
 
 20171010:
        a change to the build structure of external/bsd/acpica/bin/iasl