From: Namhyung Kim <namhyung@kernel.org>
To: Leo Yan <leo.yan@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
James Clark <james.clark@linaro.org>,
Trevor Allison <tallison@redhat.com>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] perf build: Fix static build of dlfilters
Date: Mon, 13 Jul 2026 10:38:41 -0700 [thread overview]
Message-ID: <alUioShYpMSzbmf2@google.com> (raw)
In-Reply-To: <20260713-perf_fix_static_build-v1-1-460be1f9e4d6@arm.com>
Hi Leo,
On Mon, Jul 13, 2026 at 11:23:01AM +0100, Leo Yan wrote:
> Commit e1065ed188cf ("perf build: Add LDFLAGS to dlfilters .so link")
> passes LDFLAGS when linking dlfilter shared objects. That breaks static
> builds because LDFLAGS can contain -static, leading to an invalid link
> command.
>
> dlfilters are always built as shared objects, even for a static perf
> binary. Filter out -static for the dlfilter .so link while preserving
> the rest of LDFLAGS.
>
> Fixes: e1065ed188cf ("perf build: Add LDFLAGS to dlfilters .so link")
> Signed-off-by: Leo Yan <leo.yan@arm.com>
Actually I posted the same patch. Can I get your Tested-by?
https://lore.kernel.org/r/20260707000357.823509-1-namhyung@kernel.org
Thanks,
Namhyung
> ---
> tools/perf/Makefile.perf | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 2b53d9e0c73b3382724b1f776880aaa8fa505f59..0031112c036e830e50711d5cb0b3867cba36e374 100644
> --- a/tools/perf/Makefile.perf
> +++ b/tools/perf/Makefile.perf
> @@ -680,7 +680,7 @@ $(OUTPUT)dlfilters/%.o: dlfilters/%.c include/perf/perf_dlfilter.h
> .SECONDARY: $(DLFILTERS:.so=.o)
>
> $(OUTPUT)dlfilters/%.so: $(OUTPUT)dlfilters/%.o
> - $(QUIET_LINK)$(CC) $(LDFLAGS) $(EXTRA_CFLAGS) -shared -o $@ $<
> + $(QUIET_LINK)$(CC) $(filter-out -static,$(LDFLAGS)) $(EXTRA_CFLAGS) -shared -o $@ $<
>
> ifndef NO_JVMTI
> LIBJVMTI_IN := $(OUTPUT)jvmti/jvmti-in.o
>
> ---
> base-commit: ef3af1df4f3372bd8ad47619452a283048b3bc8d
> change-id: 20260713-perf_fix_static_build-6db03942fee1
>
> Best regards,
> --
> Leo Yan <leo.yan@arm.com>
>
next prev parent reply other threads:[~2026-07-13 17:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-13 10:23 [PATCH] perf build: Fix static build of dlfilters Leo Yan
2026-07-13 17:38 ` Namhyung Kim [this message]
2026-07-13 18:14 ` Leo Yan
2026-07-13 20:54 ` Namhyung Kim
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