linux-kernel - [PATCH 2/2] selftests/nolibc: error out on linker warnings

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Message-Id: <20251122-nolibc-lld-v1-2-5e181e228c6a@weissschuh.net>
Date: Sat, 22 Nov 2025 12:01:58 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 2/2] selftests/nolibc: error out on linker warnings

If the linker emits warnings these should abort the build.
Otherwise they will be swallowed by run-tests.sh and not shown.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/testing/selftests/nolibc/run-tests.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/nolibc/run-tests.sh b/tools/testing/selftests/nolibc/run-tests.sh
index e8af1fb505cf..bbe8afbabd3a 100755
--- a/tools/testing/selftests/nolibc/run-tests.sh
+++ b/tools/testing/selftests/nolibc/run-tests.sh
@@ -169,7 +169,7 @@ test_arch() {
 	cross_compile=$(realpath "${download_location}gcc-${crosstool_version}-nolibc/${ct_arch}-${ct_abi}/bin/${ct_arch}-${ct_abi}-")
 	build_dir="${build_location}/${arch}"
 	if [ "$werror" -ne 0 ]; then
-		CFLAGS_EXTRA="$CFLAGS_EXTRA -Werror"
+		CFLAGS_EXTRA="$CFLAGS_EXTRA -Werror -Wl,--fatal-warnings"
 	fi
 	MAKE=(make -f Makefile.nolibc -j"${nproc}" XARCH="${arch}" CROSS_COMPILE="${cross_compile}" LLVM="${llvm}" O="${build_dir}")
 

-- 
2.52.0