From 489b536f7f1621aa008157252ed710ac6502c031 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Thu, 5 Oct 2017 16:40:50 +0000
Subject: [PATCH] Document KERNBUILDDIR.

Sponsored by: Netflix
---
 sys/conf/kmod.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/conf/kmod.mk b/sys/conf/kmod.mk
index e2e63032ef19..6c391e2b1d14 100644
--- a/sys/conf/kmod.mk
+++ b/sys/conf/kmod.mk
@@ -44,6 +44,10 @@
 #
 # DESTDIR	The tree where the module gets installed. [not set]
 #
+# KERNBUILDDIR
+#		Set to the location of the kernel build directory where
+#		the opt_*.h files, .o's and kernel winds up.
+#
 # +++ targets +++
 #
 # 	install: