linux-kernel - Re: [PATCH] perf tools: Fix static building

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Date:   Tue, 30 Aug 2016 09:21:30 -0700
From:   Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:     Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Wang Nan <wangnan0@...wei.com>, Jiri Olsa <jolsa@...nel.org>,
        He Kuang <hekuang@...wei.com>,
        Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Zefan Li <lizefan@...wei.com>,
        "pi3orama@....com" <pi3orama@....com>
Subject: Re: [PATCH] perf tools: Fix static building

On 08/22/2016 10:35 AM, Alexey Brodkin wrote:
> With commit e3d09ec8126f ("tools lib traceevent: Export dynamic symbols
> used by traceevent plugins") we started to add "--dynamic-list" in
> LDFLAGS. One side-effect of that was inability to build really
> statically-linked perf.
>
> I.e. even if "LDFLAGS=-static" were passed on perf building command-line
> it had no effect and perf was built dynamically.
>
> This change disables setup of "--dynamic-list" if LDFLAGS contains
> "-static" option.
>
> Signed-off-by: Alexey Brodkin <abrodkin@...opsys.com>
> Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
> Cc: Vineet Gupta <vgupta@...opsys.com>
> Cc: Wang Nan <wangnan0@...wei.com>
> Cc: Jiri Olsa <jolsa@...nel.org>
> Cc: He Kuang <hekuang@...wei.com>
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Cc: Zefan Li <lizefan@...wei.com>
> Cc: pi3orama@....com
> ---
>  tools/perf/Makefile.perf | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 2d908750..e9acc7c 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -236,7 +236,9 @@ LIBTRACEEVENT = $(TE_PATH)libtraceevent.a
>  export LIBTRACEEVENT
>  
>  LIBTRACEEVENT_DYNAMIC_LIST = $(TE_PATH)libtraceevent-dynamic-list
> +ifeq ($(filter -static,$(LDFLAGS)),)
>  LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS = -Xlinker --dynamic-list=$(LIBTRACEEVENT_DYNAMIC_LIST)
> +endif
>  
>  LIBAPI = $(API_PATH)libapi.a
>  export LIBAPI

Gentle Ping while Alexey is away on vacation !
Arnaldo are you ok with this patch.

Thx,
-Vineet