linux-kernel - Re: [PATCH 3/3] raid6/test: replace echo -e with printf

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Date:	Thu, 22 Aug 2013 17:09:11 +0200
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Max Filippov <jcmvbkbc@...il.com>, linux-kernel@...r.kernel.org
CC:	Sam Ravnborg <sam@...nborg.org>,
	Guenter Roeck <linux@...ck-us.net>, NeilBrown <neilb@...e.de>,
	Jim Kukunas <james.t.kukunas@...ux.intel.com>,
	Yuanhan Liu <yuanhan.liu@...ux.intel.com>
Subject: Re: [PATCH 3/3] raid6/test: replace echo -e with printf

Acked-by: H. Peter Anvin <hpa@...or.com>

Max Filippov <jcmvbkbc@...il.com> wrote:
>-e is a non-standard echo option, echo output is
>implementation-dependent when it is used. Replace echo -e with printf
>as
>suggested by POSIX echo manual.
>
>Cc: NeilBrown <neilb@...e.de>
>Cc: Jim Kukunas <james.t.kukunas@...ux.intel.com>
>Cc: "H. Peter Anvin" <hpa@...or.com>
>Cc: Yuanhan Liu <yuanhan.liu@...ux.intel.com>
>Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
>---
> lib/raid6/test/Makefile |    2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
>diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
>index 087332d..73b0151 100644
>--- a/lib/raid6/test/Makefile
>+++ b/lib/raid6/test/Makefile
>@@ -28,7 +28,7 @@ ifeq ($(IS_X86),yes)
>                     gcc -c -x assembler - >&/dev/null &&	\
>                     rm ./-.o && echo -DCONFIG_AS_AVX2=1)
> else
>-        HAS_ALTIVEC := $(shell echo -e '\#include <altivec.h>\nvector
>int a;' |\
>+        HAS_ALTIVEC := $(shell printf '\#include <altivec.h>\nvector
>int a;\n' |\
>                          gcc -c -x c - >&/dev/null && \
>                          rm ./-.o && echo yes)
>         ifeq ($(HAS_ALTIVEC),yes)

-- 
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