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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>, Rob Herring <robh@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.4 45/57] scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting
Date:   Mon,  5 Oct 2020 17:26:57 +0200
Message-Id: <20201005142111.974361953@linuxfoundation.org>
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From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

[ Upstream commit efe84d408bf41975db8506d3a1cc02e794e2309c ]

When building with

	$ HOST_EXTRACFLAGS=-g make

the expectation is that host tools are built with debug informations.
This however doesn't happen if the Makefile assigns a new value to the
HOST_EXTRACFLAGS instead of appending to it. So use += instead of := for
the first assignment.

Fixes: e3fd9b5384f3 ("scripts/dtc: consolidate include path options in Makefile")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 scripts/dtc/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index b5a5b1c548c9b..c2dac994896b4 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -9,7 +9,7 @@ dtc-objs	:= dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
 dtc-objs	+= dtc-lexer.lex.o dtc-parser.tab.o
 
 # Source files need to get at the userspace version of libfdt_env.h to compile
-HOST_EXTRACFLAGS := -I $(srctree)/$(src)/libfdt
+HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
 
 ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
 ifneq ($(CHECK_DTBS),)
-- 
2.25.1