Re: [PATCH stable 6.1 v2 5/5] perf build: Remove -Wno-unused-but-set-variable from the flex flags when building with clang < 13.0.0

[Greg KH]

On Wed, May 20, 2026 at 09:35:02AM -0700, Florian Fainelli wrote:
> On 5/20/26 09:33, Florian Fainelli wrote:
> > From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> > 
> > clang < 13.0.0 doesn't grok -Wno-unused-but-set-variable, so just remove
> > it to avoid:
> > 
> >    error: unknown warning option '-Wno-unused-but-set-variable'; did you mean '-Wno-unused-const-variable'? [-Werror,-Wunknown-warning-option]
> >    make[4]: *** [/git/perf-6.5.0-rc4/tools/build/Makefile.build:128: /tmp/build/perf/util/pmu-flex.o] Error 1
> >    make[4]: *** Waiting for unfinished jobs....
> > 
> > Fixes: ddc8e4c966923ad1 ("perf build: Disable fewer bison warnings")
> > Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
> > Cc: Ian Rogers <irogers@xxxxxxxxxx>
> > Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
> > Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
> > Link: https://lore.kernel.org/lkml/ZNUSWr52jUnVaaa%2F@xxxxxxxxxx/
> > Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> > Signed-off-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
> > Change-Id: I8db8a372d1e83d26fbe8beda2bcf4d1a871a2b80
> 
> Argh, sorry the Change-Id snuck in there, let me know if you need me to
> resubmit.

I got it, no worries.