linux-kernel - [PATCH v1 1/1] Makefile.extrawarn: Turn off -Werror when extra warnings are enabled

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Date:   Fri, 25 Mar 2022 15:13:48 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH v1 1/1] Makefile.extrawarn: Turn off -Werror when extra warnings are enabled

When `make W=1 ...` is executed the level 1 warnings become errors,
due to recent change in some of the defconfigs, and fail the build.
Since there are a lot of warnings on the level 1 are still present
in the defconfigs at least for x86, let disable -Werror in such case.

Fixes: b9080ba4a6ec ("x86/defconfig: Enable WERROR")
Suggested-by: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 scripts/Makefile.extrawarn | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 650d0b8ceec3..c81d74ef6c90 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -94,3 +94,10 @@ KBUILD_CFLAGS += $(call cc-option, -Wpacked-bitfield-compat)
 KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN3
 
 endif
+
+#
+# Turn off -Werror when extra warnings are enabled
+#
+ifneq ($(KBUILD_EXTRA_WARN),)
+	KBUILD_CFLAGS += -Wno-error
+endif
-- 
2.35.1