Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
To:     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-kernel@vger.kernel.org, netdev@vger.kernel.org,
        bpf@vger.kernel.org, clang-built-linux@googlegroups.com,
        ilias.apalodimas@linaro.org, sergei.shtylyov@cogentembedded.com,
        Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Subject: [PATCH v5 bpf-next 01/15] samples/bpf: fix HDR_PROBE "echo"
Date:   Fri, 11 Oct 2019 03:27:54 +0300
Message-Id: <20191011002808.28206-2-ivan.khoronzhuk@linaro.org>
In-Reply-To: <20191011002808.28206-1-ivan.khoronzhuk@linaro.org>
References: <20191011002808.28206-1-ivan.khoronzhuk@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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

Acked-by: Andrii Nakryiko <andriin@fb.com>
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 a11d7270583d..4f61725b1d86 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -201,7 +201,7 @@ 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