linux-kernel - Re: [PATCH v3 5/7] selftests/timers: Use implicit rules

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Date:	Mon, 09 Mar 2015 17:17:11 -0600
From:	Shuah Khan <shuahkh@....samsung.com>
To:	Michael Ellerman <mpe@...erman.id.au>
CC:	linux-kernel@...r.kernel.org, davej@...emonkey.org.uk,
	mmarek@...e.cz, linux-api@...r.kernel.org
Subject: Re: [PATCH v3 5/7] selftests/timers: Use implicit rules

On 03/04/2015 03:41 AM, Michael Ellerman wrote:
> There's no need to open-code the build rules, use the implicit ones.
> 
> This has the nice side effect of enabling cross compilation.
> 
> Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
> ---
>  tools/testing/selftests/timers/Makefile | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile
> index 149cee3b7b8a..87340405e4b3 100644
> --- a/tools/testing/selftests/timers/Makefile
> +++ b/tools/testing/selftests/timers/Makefile
> @@ -1,9 +1,9 @@
> -all:
> -	gcc posix_timers.c -o posix_timers -lrt
> -
>  TEST_PROGS := posix_timers
> +LDLIBS += -lrt
> +
> +all: $(TEST_PROGS)

I can't take this patch. This breaks make kselftest
run. With this change timers test fails to build

make[2]: Nothing to be done for 'all'.
make[2]: *** No rule to make target 'posix_timers', needed by 'all'.  Stop.


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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