linux-kernel - [PATCH 6.12 058/277] tools build: Align warning options with perf

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Message-ID: <20251017145149.262900452@linuxfoundation.org>
Date: Fri, 17 Oct 2025 16:51:05 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: stable@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	patches@...ts.linux.dev,
	Leo Yan <leo.yan@....com>,
	Ian Rogers <irogers@...gle.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	James Clark <james.clark@...aro.org>,
	linux-riscv@...ts.infradead.org,
	llvm@...ts.linux.dev,
	Paul Walmsley <paul.walmsley@...ive.com>,
	linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.12 058/277] tools build: Align warning options with perf

6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Leo Yan <leo.yan@....com>

[ Upstream commit 53d067feb8c4f16d1f24ce3f4df4450bb18c555f ]

The feature test programs are built without enabling '-Wall -Werror'
options. As a result, a feature may appear to be available, but later
building in perf can fail with stricter checks.

Make the feature test program use the same warning options as perf.

Fixes: 1925459b4d92 ("tools build: Fix feature Makefile issues with 'O='")
Signed-off-by: Leo Yan <leo.yan@....com>
Reviewed-by: Ian Rogers <irogers@...gle.com>
Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-1-4305590795b2@arm.com
Cc: Palmer Dabbelt <palmer@...belt.com>
Cc: Albert Ou <aou@...s.berkeley.edu>
Cc: Alexandre Ghiti <alex@...ti.fr>
Cc: Nick Desaulniers <nick.desaulniers+lkml@...il.com>
Cc: Justin Stitt <justinstitt@...gle.com>
Cc: Bill Wendling <morbo@...gle.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Nathan Chancellor <nathan@...nel.org>
Cc: James Clark <james.clark@...aro.org>
Cc: linux-riscv@...ts.infradead.org
Cc: llvm@...ts.linux.dev
Cc: Paul Walmsley <paul.walmsley@...ive.com>
Cc: linux-kernel@...r.kernel.org
Cc: linux-perf-users@...r.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/build/feature/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 1658596188bf8..592ca17b4b74a 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -327,10 +327,10 @@ $(OUTPUT)test-libcapstone.bin:
 	$(BUILD) # -lcapstone provided by $(FEATURE_CHECK_LDFLAGS-libcapstone)
 
 $(OUTPUT)test-compile-32.bin:
-	$(CC) -m32 -o $@ test-compile.c
+	$(CC) -m32 -Wall -Werror -o $@ test-compile.c
 
 $(OUTPUT)test-compile-x32.bin:
-	$(CC) -mx32 -o $@ test-compile.c
+	$(CC) -mx32 -Wall -Werror -o $@ test-compile.c
 
 $(OUTPUT)test-zlib.bin:
 	$(BUILD) -lz
-- 
2.51.0