linux-kernel - Re: [PATCHv2 1/9] perf tools: Add build id shell test

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Message-ID: <CAM9d7cgoaU4wcid46+uScFcZtMZZQR+fijuE7XO1mjC2cLwX-A@mail.gmail.com>
Date:   Tue, 6 Oct 2020 10:37:45 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Ian Rogers <irogers@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCHv2 1/9] perf tools: Add build id shell test

On Sat, Oct 3, 2020 at 4:29 AM Jiri Olsa <jolsa@...hat.com> wrote:
>
> On Fri, Oct 02, 2020 at 10:34:51AM -0700, Ian Rogers wrote:
>
> SNIP
>
> > > > +
> > > >  LIBJVMTI = libperf-jvmti.so
> > > >
> > > >  ifndef NO_JVMTI
> > > > @@ -756,6 +763,13 @@ $(OUTPUT)perf-read-vdsox32: perf-read-vdso.c util/find-map.c
> > > >         $(QUIET_CC)$(CC) -mx32 $(filter -static,$(LDFLAGS)) -Wall -Werror -o $@ perf-read-vdso.c
> > > >  endif
> > > >
> > > > +ifndef NO_BUILDID_EX
> > > > +$(OUTPUT)buildid-ex-sha1:
> > > > +       $(QUIET_LINK)echo 'int main(void) { return 0; }' | $(CC) -Wl,--build-id=sha1 -o $@ -x c -
> > > > +$(OUTPUT)buildid-ex-md5:
> > > > +       $(QUIET_LINK)echo 'int main(void) { return 0; }' | $(CC) -Wl,--build-id=md5 -o $@ -x c -
> > > > +endif
> > >
> > > Can we just build them in the test shell script instead?
>
> it would solve the build-directory/install-directory
> lookup search.. but it'd need to do detect compiler
> and depend on it as Ian said
>
> do you have some other reason to compile it in test?

No I just wanted to make it easy to find the binaries
and assumed a compiler is available in the test machine
(which is not true for my company setup.... :-/)

But otherwise we should keep the binaries somewhere
in the install directory..

Thanks
Namhyung