linux-kernel - Re: [PATCH 0/5] perf build: nondistro build tidyups

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Message-ID: <aV2KM5yEAoLWT8rx@x1>
Date: Tue, 6 Jan 2026 19:18:27 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: James Clark <james.clark@...aro.org>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>, Leo Yan <leo.yan@....com>,
	Justin Stitt <justinstitt@...gle.com>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	Roberto Sassu <roberto.sassu@...wei.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Andres Freund <andres@...razel.de>,
	Andrii Nakryiko <andrii@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Nick Terrell <terrelln@...com>, Song Liu <song@...nel.org>,
	bpf@...r.kernel.org, llvm@...ts.linux.dev,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Quentin Monnet <qmo@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>
Subject: Re: [PATCH 0/5] perf build: nondistro build tidyups

On Tue, Dec 23, 2025 at 05:00:23PM +0000, James Clark wrote:
> nondistro builds now require a specific version of libbfd, so this adds
> an error when doing an explicit BUILD_NONDISTRO build and some other
> related tidyups.
> 
> I'm not sure if the intention is to skip build-tests if something is
> missing, but I see it was done for libbpf versions, so I added the same
> for libbfd. This is the main thing that I hit, that build-test all of a
> sudden stopped working for me.
> 
> The first commit is also a cherry pick of an old commit that seemed to
> have been accidentally reverted in the unrelated change linked in the
> trailers.

Thanks, applied to perf-tools-next,

- Arnaldo
 
> ---
> James Clark (4):
>       perf build: Do all non-distro feature checks in one go
>       perf build: Remove unused libbfd-buildid feature test
>       perf build: Feature test for libbfd thread safety API
>       perf build: Skip nondistro build test if libbfd is old
> 
> Roberto Sassu (1):
>       perf build: Remove FEATURE_CHECK_LDFLAGS-disassembler-{four-args,init-styled} setting
> 
>  tools/build/Makefile.feature                 |  2 +-
>  tools/build/feature/Makefile                 |  4 +--
>  tools/build/feature/test-libbfd-buildid.c    |  8 -----
>  tools/build/feature/test-libbfd-threadsafe.c | 18 ++++++++++
>  tools/perf/Makefile.config                   | 54 ++++++++++------------------
>  tools/perf/tests/make                        |  5 +++
>  6 files changed, 45 insertions(+), 46 deletions(-)
> ---
> base-commit: cbd41c6d4c26c161a2b0e70ad411d3885ff13507
> change-id: 20251223-james-libbfd-feat-check-e0cd09d2c1e1
> 
> Best regards,
> -- 
> James Clark <james.clark@...aro.org>