From fbb74b0ee7332ad6c41d21814b18240e48265704 Mon Sep 17 00:00:00 2001
From: Bryan Drewery <bdrewery@FreeBSD.org>
Date: Thu, 2 Nov 2017 04:05:03 +0000
Subject: [PATCH] Don't propagate MAKEOBJDIRPREFIX changes to environment.

A makefile may use this variable later for its own reasons,
don't infect sub-makes with that value.

Sponsored by:	Dell EMC Isilon
---
 share/mk/src.sys.obj.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/share/mk/src.sys.obj.mk b/share/mk/src.sys.obj.mk
index b5b27c36bfa..b2eeb3336cd 100644
--- a/share/mk/src.sys.obj.mk
+++ b/share/mk/src.sys.obj.mk
@@ -43,7 +43,8 @@ MAKEOBJDIRPREFIX:=	${MAKEOBJDIRPREFIX}${TARGET:D/${TARGET}.${TARGET_ARCH}}
 # put things approximately where they want
 OBJROOT:=	${MAKEOBJDIRPREFIX}${SRCTOP}/
 MAKEOBJDIRPREFIX=
-.export MAKEOBJDIRPREFIX
+# export but do not track
+.export-env MAKEOBJDIRPREFIX
 .endif
 .if empty(MAKEOBJDIR)
 # OBJTOP set below