linux-kernel - Re: [Linux v5.19-rc1] tools/perf/a.out remains after make -C tools/perf clean

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Date:   Tue, 28 Jun 2022 11:39:16 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Sedat Dilek <sedat.dilek@...il.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Linux v5.19-rc1] tools/perf/a.out remains after make -C
 tools/perf clean

Em Sun, Jun 26, 2022 at 12:31:05PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Jun 15, 2022 at 12:11:48AM +0200, Sedat Dilek escreveu:
> >                   bpf: [ on  ]  # HAVE_LIBBPF_SUPPORT
> >                   aio: [ on  ]  # HAVE_AIO_SUPPORT
> >                  zstd: [ on  ]  # HAVE_ZSTD_SUPPORT
> >               libpfm4: [ OFF ]  # HAVE_LIBPFM
> > 
> > Tried `make distclean`.
> > Tried `make tools/ clean` but tools/tracing/rtla produces errors (rm clean).
> > Still exists: tools/perf/a.out.
> 
> I started seeing this here, will investigate and re-read your reports,
> thanks for sending them!

This is only happening when I use CC=clang, here I have clang 13, just
making a note, seems related to a feature check,
tools/build/feature/test-hello.c.

- Arnaldo