linux-kernel - Re: [PATCH 6/6] selftests: Set CC using CROSS

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Message-ID: <54B93E30.3060002@osg.samsung.com>
Date:	Fri, 16 Jan 2015 09:37:04 -0700
From:	Shuah Khan <shuahkh@....samsung.com>
To:	Michael Ellerman <mpe@...erman.id.au>, linux-kernel@...r.kernel.org
CC:	mmarek@...e.cz, gregkh@...uxfoundation.org,
	akpm@...ux-foundation.org, rostedt@...dmis.org, mingo@...hat.com,
	davem@...emloft.net, keescook@...omium.org, tranmanphong@...il.com,
	cov@...eaurora.org, dh.herrmann@...il.com, hughd@...gle.com,
	bobby.prani@...il.com, serge.hallyn@...ntu.com,
	ebiederm@...ssion.com, tim.bird@...ymobile.com,
	josh@...htriplett.org, koct9i@...il.com,
	linux-kbuild@...r.kernel.org, linux-api@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 6/6] selftests: Set CC using CROSS_COMPILE once in lib.mk

On 01/09/2015 02:06 AM, Michael Ellerman wrote:

Missing commit log. Please make sure your future include
a meaningful commit log that describes what the patch does.

> Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
> ---
>  tools/testing/selftests/efivarfs/Makefile | 1 -
>  tools/testing/selftests/exec/Makefile     | 1 -
>  tools/testing/selftests/kcmp/Makefile     | 1 -
>  tools/testing/selftests/lib.mk            | 6 ++++++
>  tools/testing/selftests/net/Makefile      | 1 -
>  tools/testing/selftests/powerpc/Makefile  | 3 +--
>  tools/testing/selftests/size/Makefile     | 2 --
>  tools/testing/selftests/vm/Makefile       | 1 -
>  8 files changed, 7 insertions(+), 9 deletions(-)
> 
> diff --git a/tools/testing/selftests/efivarfs/Makefile b/tools/testing/selftests/efivarfs/Makefile
> index 3052d0bda24b..d683486a859b 100644
> --- a/tools/testing/selftests/efivarfs/Makefile
> +++ b/tools/testing/selftests/efivarfs/Makefile
> @@ -1,4 +1,3 @@
> -CC = $(CROSS_COMPILE)gcc
>  CFLAGS = -Wall
>  
>  test_objs = open-unlink create-read
> diff --git a/tools/testing/selftests/exec/Makefile b/tools/testing/selftests/exec/Makefile
> index 886cabe307b1..4edb7d0da29b 100644
> --- a/tools/testing/selftests/exec/Makefile
> +++ b/tools/testing/selftests/exec/Makefile
> @@ -1,4 +1,3 @@
> -CC = $(CROSS_COMPILE)gcc
>  CFLAGS = -Wall
>  BINARIES = execveat
>  DEPS = execveat.symlink execveat.denatured script subdir
> diff --git a/tools/testing/selftests/kcmp/Makefile b/tools/testing/selftests/kcmp/Makefile
> index 0eecd183058c..2ae7450a9a89 100644
> --- a/tools/testing/selftests/kcmp/Makefile
> +++ b/tools/testing/selftests/kcmp/Makefile
> @@ -1,4 +1,3 @@
> -CC := $(CROSS_COMPILE)$(CC)
>  CFLAGS += -I../../../../usr/include/
>  
>  all: kcmp_test
> diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
> index 7bd3dabe2846..abae16396c43 100644
> --- a/tools/testing/selftests/lib.mk
> +++ b/tools/testing/selftests/lib.mk
> @@ -1,3 +1,9 @@
> +# When we're called from kbuild $(CC) already contains $(CROSS_COMPILE), so
> +# here we need to use "cc", otherwise we'll get $(CROSS_COMPILE) twice. The
> +# only downside is it breaks someone overriding $(CC), but that's probably OK,
> +# they can probably cope by changing their path.

I don't want to see the compiles broken and users needing to
work-around. Pleas find a way to not break the compiles.

thanks,
-- Shuah

-- 
Shuah Khan
Sr. Linux Kernel Developer
Open Source Innovation Group
Samsung Research America (Silicon Valley)
shuahkh@....samsung.com | (970) 217-8978
--
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