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kbuild: unify W=e and CONFIG_WERROR

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The two mechanisms have the same effect, unify their implementation.

Also avoid spurious rebuilds when switching between the two.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Link: https://lore.kernel.org/r/20250814-kbuild-werror-v2-2-c01e596309d2@linutronix.de
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
This commit is contained in:
Thomas Weißschuh
2025-08-14 11:21:07 -07:00
committed by Nathan Chancellor
parent f852ce052a
commit e7a10929c5
1 changed files with 2 additions and 4 deletions
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scripts/Makefile.extrawarn
+2 -4
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@@ -25,8 +25,6 @@ ifneq ($(CONFIG_FRAME_WARN),0)
KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN)
endif
KBUILD_CPPFLAGS-$(CONFIG_WERROR) += -Werror
KBUILD_CPPFLAGS += $(KBUILD_CPPFLAGS-y)
KBUILD_CFLAGS-$(CONFIG_CC_NO_ARRAY_BOUNDS) += -Wno-array-bounds
ifdef CONFIG_CC_IS_CLANG
@@ -214,9 +212,9 @@ KBUILD_CFLAGS += -Wno-unused-parameter
endif
#
# W=e - error out on warnings
# W=e and CONFIG_WERROR - error out on warnings
#
ifneq ($(findstring e, $(KBUILD_EXTRA_WARN)),)
ifneq ($(findstring e, $(KBUILD_EXTRA_WARN))$(CONFIG_WERROR),)
KBUILD_CPPFLAGS += -Werror