linux-kernel - Re: [PATCH 05/10] libperf: Add _GNU

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Date:   Fri, 18 Oct 2019 15:07:38 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Stephane Eranian <eranian@...gle.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>
Subject: Re: [PATCH 05/10] libperf: Add _GNU_SOURCE define to compilation


Why?


Em Thu, Oct 17, 2019 at 12:59:13PM +0200, Jiri Olsa escreveu:
> Link: http://lkml.kernel.org/n/tip-m7t1e9kgea4jc3piyvjju7ps@git.kernel.org
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/perf/lib/Makefile       | 1 +
>  tools/perf/lib/tests/Makefile | 2 ++
>  2 files changed, 3 insertions(+)
> 
> diff --git a/tools/perf/lib/Makefile b/tools/perf/lib/Makefile
> index 0f233638ef1f..20396f68fcad 100644
> --- a/tools/perf/lib/Makefile
> +++ b/tools/perf/lib/Makefile
> @@ -73,6 +73,7 @@ override CFLAGS += -Werror -Wall
>  override CFLAGS += -fPIC
>  override CFLAGS += $(INCLUDES)
>  override CFLAGS += -fvisibility=hidden
> +override CFLAGS += -D_GNU_SOURCE
>  
>  all:
>  
> diff --git a/tools/perf/lib/tests/Makefile b/tools/perf/lib/tests/Makefile
> index a43cd08c5c03..78c3d8c83c53 100644
> --- a/tools/perf/lib/tests/Makefile
> +++ b/tools/perf/lib/tests/Makefile
> @@ -12,6 +12,8 @@ else
>    CFLAGS := -g -Wall
>  endif
>  
> +CFLAGS += -D_GNU_SOURCE
> +
>  all:
>  
>  include $(srctree)/tools/scripts/Makefile.include
> -- 
> 2.21.0

-- 

- Arnaldo