[src/trunk]: src/include move P_tmpdir from "/var/tmp/" to "/tmp/".

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

details:   https://anonhg.NetBSD.org/src/rev/3cd687dc6fc4
branches:  trunk
changeset: 847166:3cd687dc6fc4
user:      mrg <mrg%NetBSD.org@localhost>
date:      Fri Dec 13 20:25:16 2019 +0000

description:
move P_tmpdir from "/var/tmp/" to "/tmp/".

the main effect of this is to make GCC and other libiberty using
tools use /tmp instead of /var/tmp for compiler temp files,
which can be a bottleneck on larger systems.

a survey of other platforms shows only OSX also uses /var/tmp,
everyone else has switched to /tmp long ago.


cons:  some smaller systems may have a smaller /tmp than /var/tmp,
and this may cause builds to fail with out of space earlier.
point the build to /var/tmp using TMPDIR in this case.

one can argue that setting TMPDIR would work around this, but we
want to have the effect for all users without having special setup.

diffstat:

 include/stdio.h |  4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diffs (18 lines):

diff -r 9e97e94487b6 -r 3cd687dc6fc4 include/stdio.h
--- a/include/stdio.h   Fri Dec 13 20:10:21 2019 +0000
+++ b/include/stdio.h   Fri Dec 13 20:25:16 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: stdio.h,v 1.97 2016/03/17 00:42:49 christos Exp $      */
+/*     $NetBSD: stdio.h,v 1.98 2019/12/13 20:25:16 mrg Exp $   */
 
 /*-
  * Copyright (c) 1990, 1993
@@ -193,7 +193,7 @@
 
 /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
-#define        P_tmpdir        "/var/tmp/"
+#define        P_tmpdir        "/tmp/"
 #endif
 #define        L_tmpnam        1024    /* XXX must be == PATH_MAX */
 /* Always ensure that this is consistent with <limits.h> */