linux-kernel - Re: [PATCH 1/2] perf: add per-feature check flags

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Date:	Tue, 26 Nov 2013 18:56:47 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Jean Pihet <jean.pihet@...aro.org>
Cc:	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	Will Deacon <will.deacon@....com>,
	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo <acme@...stprotocols.net>, patches@...aro.org
Subject: Re: [PATCH 1/2] perf: add per-feature check flags


* Jean Pihet <jean.pihet@...aro.org> wrote:

> Add CFLAGS and LDFLAGS for each feature to be checked. This allows
> to pass flags and parameters to the feature checks compilation.
> Also simplifies the feature check makefile, to come in a subsequent patch.
> 
> Signed-off-by: Jean Pihet <jean.pihet@...aro.org>
> ---
>  tools/perf/config/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
> index f7d11a8..c551495 100644
> --- a/tools/perf/config/Makefile
> +++ b/tools/perf/config/Makefile
> @@ -102,7 +102,7 @@ endif
>  
>  feature_check = $(eval $(feature_check_code))
>  define feature_check_code
> -  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS="$(LDFLAGS)" LIBUNWIND_LIBS="$(LIBUNWIND_LIBS)" -C config/feature-checks test-$1 >/dev/null 2>/dev/null && echo 1 || echo 0)
> +  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" LIBUNWIND_LIBS="$(LIBUNWIND_LIBS)" -C config/feature-checks test-$1 >/dev/null 2>/dev/null && echo 1 || echo 0)
>  endef

Acked-by: Ingo Molnar <mingo@...nel.org>

Thanks,

	Ingo
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