[PATCH 5.4 094/224] tools build: Align warning options with perf

Greg Kroah-Hartman
2025-10-27T18:42:51Z

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

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

From: Leo Yan <leo.yan@arm.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@arm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-1-4305590795b2@arm.com
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: linux-riscv@lists.infradead.org
Cc: llvm@lists.linux.dev
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-perf-users@vger.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.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 8104e505efde6..f5b7b1489e1fc 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -258,10 +258,10 @@ $(OUTPUT)test-sync-compare-and-swap.bin:
$(BUILD)

$(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