linux-kernel - Re: [PATCH v1] tools build: Make libperl opt-in rather than opt-out, deprecate

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Message-ID: <aM2p2up90BM0zwEz@x1>
Date: Fri, 19 Sep 2025 16:07:06 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Michael Petlan <mpetlan@...hat.com>,
	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>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	"Steven Rostedt (Google)" <rostedt@...dmis.org>,
	James Clark <james.clark@...aro.org>,
	Tomas Glozar <tglozar@...hat.com>, Yuzhuo Jing <yuzhuo@...gle.com>,
	Quentin Monnet <qmo@...nel.org>, Leo Yan <leo.yan@....com>,
	Charlie Jenkins <charlie@...osinc.com>,
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v1] tools build: Make libperl opt-in rather than opt-out,
 deprecate

On Mon, Sep 08, 2025 at 11:19:18AM -0700, Ian Rogers wrote:
> If libperl is installed then the perf tool build will build against
> it. There appears to be limited interest in the scripting support for
> perl so let's make it opt-in and deprecate it.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>

Applied, after the slight change below, to keep the tip for fedora/rhel
systems.

Thanks,

- Arnaldo

diff --git a/tools/perf/builtin-check.c b/tools/perf/builtin-check.c
index 5457762f7dd59425..7fd054760e47847b 100644
--- a/tools/perf/builtin-check.c
+++ b/tools/perf/builtin-check.c
@@ -49,7 +49,7 @@ struct feature_status supported_features[] = {
 	FEATURE_STATUS("libelf", HAVE_LIBELF_SUPPORT),
 	FEATURE_STATUS("libnuma", HAVE_LIBNUMA_SUPPORT),
 	FEATURE_STATUS("libopencsd", HAVE_CSTRACE_SUPPORT),
-	FEATURE_STATUS_TIP("libperl", HAVE_LIBPERL_SUPPORT, "Deprecated, use LIBPERL=1 and install libperl-dev to build with it"),
+	FEATURE_STATUS_TIP("libperl", HAVE_LIBPERL_SUPPORT, "Deprecated, use LIBPERL=1 and install perl-ExtUtils-Embed/libperl-dev to build with it"),
 	FEATURE_STATUS("libpfm4", HAVE_LIBPFM),
 	FEATURE_STATUS("libpython", HAVE_LIBPYTHON_SUPPORT),
 	FEATURE_STATUS("libslang", HAVE_SLANG_SUPPORT),