From 987c375f87b704da469341f0ea6dfbda7cb85fcf Mon Sep 17 00:00:00 2001
From: Bryan Drewery <bdrewery@FreeBSD.org>
Date: Fri, 3 Jun 2016 21:35:19 +0000
Subject: [PATCH] WITH_META_MODE: Avoid "building" .depend if there is nothing
 to do.

This avoids 'Building /path/.depend' when it will not actually produce a
file.

Sponsored by:	EMC / Isilon Storage Division
---
 share/mk/bsd.dep.mk | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/share/mk/bsd.dep.mk b/share/mk/bsd.dep.mk
index 0d53d4b4bb0..c371171512f 100644
--- a/share/mk/bsd.dep.mk
+++ b/share/mk/bsd.dep.mk
@@ -246,7 +246,9 @@ DPSRCS+= ${SRCS}
 # beforedepend/_EXTRADEPEND/afterdepend.  The target is kept
 # to allow 'make depend' to generate files.
 ${DEPENDFILE}: ${DPSRCS}
-.if !empty(.MAKE.MODE:Mmeta) || exists(${.OBJDIR}/${DEPENDFILE})
+.if exists(${.OBJDIR}/${DEPENDFILE}) || \
+    ((commands(beforedepend) || commands(_EXTRADEPEND) || \
+    commands(afterdepend)) && !empty(.MAKE.MODE:Mmeta))
 	rm -f ${DEPENDFILE}
 .endif
 .if target(_EXTRADEPEND)