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From:   Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
To:     linux@armlinux.org.uk, ast@kernel.org, daniel@iogearbox.net,
        yhs@fb.com, davem@davemloft.net, jakub.kicinski@netronome.com,
        hawk@kernel.org, john.fastabend@gmail.com
Cc:     linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org, bpf@vger.kernel.org,
        clang-built-linux@googlegroups.com,
        Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Subject: [PATCH RFC bpf-next 06/10] samples: bpf: makefile: fix HDR_PROBE
Date:   Fri, 30 Aug 2019 03:50:33 +0300
Message-Id: <20190830005037.24004-7-ivan.khoronzhuk@linaro.org>
In-Reply-To: <20190830005037.24004-1-ivan.khoronzhuk@linaro.org>
References: <20190830005037.24004-1-ivan.khoronzhuk@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

echo should be replace on echo -e to handle \n correctly, but instead,
replace it on printf as some systems can't handle echo -e.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
---
 samples/bpf/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 9232efa2b1b3..043f9cc14cdd 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -208,7 +208,7 @@ endif
 
 # Don't evaluate probes and warnings if we need to run make recursively
 ifneq ($(src),)
-HDR_PROBE := $(shell echo "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
+HDR_PROBE := $(shell printf "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
 	$(HOSTCC) $(KBUILD_HOSTCFLAGS) -x c - -o /dev/null 2>/dev/null && \
 	echo okay)
 
-- 
2.17.1