From 5ccf6ce169cb3b492c7ec9ee9d13f8b285cc262f Mon Sep 17 00:00:00 2001
From: Peter Grehan <grehan@FreeBSD.org>
Date: Sun, 10 Apr 2016 05:58:19 +0000
Subject: [PATCH] Allow the location of the kernel source tree to be
 overridden. This makes it easier for the bhyve executable to be built out of
 the tree.

---
 usr.sbin/bhyve/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/bhyve/Makefile b/usr.sbin/bhyve/Makefile
index 0e1a85ed5a37..37e1c6710161 100644
--- a/usr.sbin/bhyve/Makefile
+++ b/usr.sbin/bhyve/Makefile
@@ -8,6 +8,8 @@ DEBUG_FLAGS= -g -O0
 
 MAN=	bhyve.8
 
+SYSDIR?=${.CURDIR}/../..
+
 SRCS=	\
 	atkbdc.c		\
 	acpi.c			\
@@ -42,7 +44,7 @@ SRCS=	\
 	xmsr.c			\
 	spinup_ap.c
 
-.PATH:	${.CURDIR}/../../sys/amd64/vmm
+.PATH:  ${SYSDIR}/sys/amd64/vmm
 SRCS+=	vmm_instruction_emul.c
 
 LIBADD=	vmmapi md pthread