From 1e47d4549b16c7a921f637aa235d9d7d98efd444 Mon Sep 17 00:00:00 2001
From: Rene Ladan <rene@FreeBSD.org>
Date: Mon, 12 Dec 2016 20:53:11 +0000
Subject: [PATCH] If KERN_DEBUGDIR happens to be empty, the port would try to
 install files twice to the same location leading to make(1) warnings.

Reported by:	marino
Pointy hat:	rene (r428333)
---
 Mk/Uses/kmod.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Mk/Uses/kmod.mk b/Mk/Uses/kmod.mk
index 28c18e63805b..a7c56f3c5766 100644
--- a/Mk/Uses/kmod.mk
+++ b/Mk/Uses/kmod.mk
@@ -41,12 +41,16 @@ KERN_DEBUGDIR?=	${DEBUGDIR}
 _INCLUDE_USES_KMOD_POST_MK=	yes
 
 _USES_install+=	290:${STAGEDIR}${KMODDIR}
+.if !empty(KERN_DEBUGDIR)
 _USES_install+=	291:${STAGEDIR}${KERN_DEBUGDIR}${KMODDIR}
+.endif
 
 ${STAGEDIR}${KMODDIR}:
 	@${MKDIR} ${.TARGET}
 
+.if !empty(KERN_DEBUGDIR)
 ${STAGEDIR}${KERN_DEBUGDIR}${KMODDIR}:
 	@${MKDIR} ${.TARGET}
+.endif
 
 .endif