Module Name:    src
Committed By:   sjg
Date:           Thu Nov 14 19:30:13 UTC 2024

Modified Files:
        src/usr.bin/make: make.1

Log Message:
make.1 clarify use of MAKEOBJDIRPREFIX

Note that MAKEOBJDIRPREFIX should be an absolute path.
Also that MAKEOBJDIRPREFIX and MAKEOBJDIR *can* be set
via makefile variables, but that care is needed to avoid
unwanted side effects.


To generate a diff of this commit:
cvs rdiff -u -r1.380 -r1.381 src/usr.bin/make/make.1

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/usr.bin/make/make.1
diff -u src/usr.bin/make/make.1:1.380 src/usr.bin/make/make.1:1.381
--- src/usr.bin/make/make.1:1.380	Sun Nov 10 02:39:14 2024
+++ src/usr.bin/make/make.1	Thu Nov 14 19:30:13 2024
@@ -1,4 +1,4 @@
-.\"	$NetBSD: make.1,v 1.380 2024/11/10 02:39:14 sjg Exp $
+.\"	$NetBSD: make.1,v 1.381 2024/11/14 19:30:13 sjg 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 November 10, 2024
+.Dd November 14, 2024
 .Dt MAKE 1
 .Os
 .Sh NAME
@@ -1165,6 +1165,7 @@ to help debug.
 .It Va MAKEOBJDIRPREFIX
 Used to create files in a separate directory, see
 .Va .OBJDIR .
+It should be an absolute path.
 .It Va .MAKE.OS
 The name of the operating system, see
 .Xr uname 1 .
@@ -2641,12 +2642,18 @@ and
 .Ev MAKEOBJDIRPREFIX
 and
 .Ev MAKEOBJDIR
-may only be set in the environment or on the command line to
+should be set in the environment or on the command line to
 .Nm
 and not as makefile variables;
 see the description of
 .Sq Va .OBJDIR
 for more details.
+It is possible to set these via makefile variables but unless done
+very early and the
+.Sq Ic .OBJDIR
+target is used to reset
+.Sq Va .OBJDIR ,
+there may be unexpected side effects.
 .Sh FILES
 .Bl -tag -width /usr/share/mk -compact
 .It .depend

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