[src/trunk]: src/usr.bin/make explain how to use .PARSEDIR and .PARSEFILE

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

details:   https://anonhg.NetBSD.org/src/rev/708cc6b84b1f
branches:  trunk
changeset: 771058:708cc6b84b1f
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Nov 06 19:50:46 2011 +0000

description:
explain how to use .PARSEDIR and .PARSEFILE

diffstat:

 usr.bin/make/make.1 |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 16f7bdbb8733 -r 708cc6b84b1f usr.bin/make/make.1
--- a/usr.bin/make/make.1       Sun Nov 06 19:46:56 2011 +0000
+++ b/usr.bin/make/make.1       Sun Nov 06 19:50:46 2011 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: make.1,v 1.195 2011/08/28 03:54:07 sjg Exp $
+.\"    $NetBSD: make.1,v 1.196 2011/11/06 19:50:46 christos Exp $
 .\"
 .\" Copyright (c) 1990, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"    from: @(#)make.1        8.4 (Berkeley) 3/19/94
 .\"
-.Dd August 28, 2011
+.Dd November 6, 2011
 .Dt MAKE 1
 .Os
 .Sh NAME
@@ -922,6 +922,9 @@
 are both set only while the
 .Ql Pa Makefiles
 are being parsed.
+If you want to retain their current values, assign them to a variable
+using assignment with expansion:
+.Pq Ql Cm \&:= .
 .It Va .PATH
 A variable that represents the list of directories that
 .Nm