linux-kernel - Re: [PATCH 05/32] perf kbuild: fix recursive invocation of config/features-checks

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Message-ID: <538E7B77.6010700@gmail.com>
Date:	Tue, 03 Jun 2014 19:50:47 -0600
From:	David Ahern <dsahern@...il.com>
To:	Alexis Berlemont <alexis.berlemont@...il.com>,
	linux-kernel@...r.kernel.org
CC:	jolsa@...hat.com, mingo@...nel.org, sam@...nborg.org,
	mmarek@...e.cz
Subject: Re: [PATCH 05/32] perf kbuild: fix recursive invocation of config/features-checks

you are missing a commit message as to why the below change is needed. 
What happens without this patch. What happens with this patch.

David

On 6/3/14, 4:05 PM, Alexis Berlemont wrote:
> ---
>   tools/perf/Makefile.kbuild | 2 +-
>   tools/perf/config/Makefile | 4 ++--
>   2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/tools/perf/Makefile.kbuild b/tools/perf/Makefile.kbuild
> index 1e3621f..b2d0d08 100644
> --- a/tools/perf/Makefile.kbuild
> +++ b/tools/perf/Makefile.kbuild
> @@ -90,7 +90,7 @@ VPATH += $(src-perf)
>
>   export src-perf obj-perf
>
> -OUTPUT := $(obj-perf)
> +OUTPUT := $(obj-perf)/
>
>   export OUTPUT
>
> diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
> index 78ee62d..1760f57 100644
> --- a/tools/perf/config/Makefile
> +++ b/tools/perf/config/Makefile
> @@ -135,7 +135,7 @@ endif
>
>   feature_check = $(eval $(feature_check_code))
>   define feature_check_code
> -  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C config/feature-checks test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
> +  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(src-perf)/config/feature-checks test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
>   endef
>
>   feature_set = $(eval $(feature_set_code))
> @@ -234,7 +234,7 @@ ifeq ($(feature-all), 1)
>     #
>     $(foreach feat,$(CORE_FEATURE_TESTS),$(call feature_set,$(feat)))
>   else
> -  $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS=$(LDFLAGS) -i -j -C config/feature-checks $(addsuffix .bin,$(CORE_FEATURE_TESTS)) >/dev/null 2>&1)
> +  $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS=$(LDFLAGS) -i -j -C $(src-perf)/config/feature-checks $(addsuffix .bin,$(CORE_FEATURE_TESTS)) >/dev/null 2>&1)
>     $(foreach feat,$(CORE_FEATURE_TESTS),$(call feature_check,$(feat)))
>   endif
>
>

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