linux-kernel - Re: [PATCH 2/4] perf tests: Fix static build test

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Message-ID: <20190901154618.GA10402@krava>
Date:   Sun, 1 Sep 2019 17:46:18 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>, 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>
Subject: Re: [PATCH 2/4] perf tests: Fix static build test

On Sun, Sep 01, 2019 at 12:15:28PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sun, Sep 01, 2019 at 02:48:20PM +0200, Jiri Olsa escreveu:
> > Link: http://lkml.kernel.org/n/tip-ibdgg163291sx5m5xkojx5sq@git.kernel.org
> 
> 
> Can you explain why this is needed? Wat is the problem with building
> statically with those features? What happens when one tries to do it
> that way?
> 
> I.e. what is this fixing?

sry, I have to disable VDSO and JVMTI for static build,
because they are shared libraries and just won't pass
with -static in LDFLAGS.. I wanted to throw it out,
because I'm confused that the test is passing for you
just like it is right now ;-)

I'll send out version with changelog

jirka

> 
> - Arnaldo
> 
> > Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> > ---
> >  tools/perf/tests/make | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/tools/perf/tests/make b/tools/perf/tests/make
> > index 70c48475896d..17ee3facfd4d 100644
> > --- a/tools/perf/tests/make
> > +++ b/tools/perf/tests/make
> > @@ -100,7 +100,7 @@ make_install_info   := install-info
> >  make_install_pdf    := install-pdf
> >  make_install_prefix       := install prefix=/tmp/krava
> >  make_install_prefix_slash := install prefix=/tmp/krava/
> > -make_static         := LDFLAGS=-static
> > +make_static         := LDFLAGS=-static NO_PERF_READ_VDSO32=1 NO_JVMTI=1
> >  
> >  # all the NO_* variable combined
> >  make_minimal        := NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1
> > -- 
> > 2.21.0
> 
> -- 
> 
> - Arnaldo