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Remove legacy 'cc-disable-warning' use from the generic build scripts

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This just converts the 'cc-disable-warning' uses in the generic makefile
extrawarn script to use the plain 'cc-option' form instead.  Partly to
clean things up, and partly just to have the new form get some proper
test coverage.

I'll leave the various random other uses of 'cc-disable-warning' alone
and let subsystem maintainers decide if they want to convert to the new
unified model.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2025-05-27 14:40:30 -07:00
parent 550ccb178d
commit bad14b5d2c
1 changed files with 16 additions and 16 deletions
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32
scripts/Makefile.extrawarn
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@ -16,8 +16,8 @@ KBUILD_CFLAGS += -Werror=return-type
KBUILD_CFLAGS += -Werror=strict-prototypes
KBUILD_CFLAGS += -Wno-format-security
KBUILD_CFLAGS += -Wno-trigraphs
KBUILD_CFLAGS += $(call cc-disable-warning, frame-address)
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
KBUILD_CFLAGS += $(call cc-option, -Wno-frame-address)
KBUILD_CFLAGS += $(call cc-option, -Wno-address-of-packed-member)
KBUILD_CFLAGS += -Wmissing-declarations
KBUILD_CFLAGS += -Wmissing-prototypes
@ -35,8 +35,8 @@ KBUILD_CFLAGS += -Wno-gnu
# Clang checks for overflow/truncation with '%p', while GCC does not:
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111219
KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow-non-kprintf)
KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation-non-kprintf)
KBUILD_CFLAGS += $(call cc-option, -Wno-format-overflow-non-kprintf)
KBUILD_CFLAGS += $(call cc-option, -Wno-format-truncation-non-kprintf)
# Clang may emit a warning when a const variable, such as the dummy variables
# in typecheck(), or const member of an aggregate type are not initialized,
@ -48,7 +48,7 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation-non-kprintf)
# disabled with this same switch, there should not be too much coverage lost
# because -Wuninitialized will still flag when an uninitialized const variable
# is used.
KBUILD_CFLAGS += $(call cc-disable-warning, default-const-init-unsafe)
KBUILD_CFLAGS += $(call cc-option, -Wno-default-const-init-unsafe)
else
# gcc inanely warns about local variables called 'main'
@ -56,7 +56,7 @@ KBUILD_CFLAGS += -Wno-main
endif
# These result in bogus false positives
KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer)
KBUILD_CFLAGS += $(call cc-option, -Wno-dangling-pointer)
# Variable Length Arrays (VLAs) should not be used anywhere in the kernel
KBUILD_CFLAGS += -Wvla
@ -70,11 +70,11 @@ KBUILD_CFLAGS += -Wno-pointer-sign
KBUILD_CFLAGS += $(call cc-option, -Wcast-function-type)
# Currently, disable -Wstringop-overflow for GCC 11, globally.
KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW) += $(call cc-disable-warning, stringop-overflow)
KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW) += $(call cc-option, -Wno-stringop-overflow)
KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) += $(call cc-option, -Wstringop-overflow)
# Currently, disable -Wunterminated-string-initialization as broken
KBUILD_CFLAGS += $(call cc-disable-warning, unterminated-string-initialization)
KBUILD_CFLAGS += $(call cc-option, -Wno-unterminated-string-initialization)
# The allocators already balk at large sizes, so silence the compiler
# warnings for bounds checks involving those possible values. While
@ -120,14 +120,14 @@ else
# Some diagnostics enabled by default are noisy.
# Suppress them by using -Wno... except for W=1.
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
KBUILD_CFLAGS += $(call cc-option, -Wno-unused-but-set-variable)
KBUILD_CFLAGS += $(call cc-option, -Wno-unused-const-variable)
KBUILD_CFLAGS += $(call cc-option, -Wno-packed-not-aligned)
KBUILD_CFLAGS += $(call cc-option, -Wno-format-overflow)
ifdef CONFIG_CC_IS_GCC
KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
KBUILD_CFLAGS += $(call cc-option, -Wno-format-truncation)
endif
KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
KBUILD_CFLAGS += $(call cc-option, -Wno-stringop-truncation)
KBUILD_CFLAGS += -Wno-override-init # alias for -Wno-initializer-overrides in clang
@ -145,9 +145,9 @@ ifeq ($(call clang-min-version, 120000),y)
KBUILD_CFLAGS += -Wformat-insufficient-args
endif
endif
KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast)
KBUILD_CFLAGS += $(call cc-option, -Wno-pointer-to-enum-cast)
KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access)
KBUILD_CFLAGS += $(call cc-option, -Wno-unaligned-access)
KBUILD_CFLAGS += -Wno-enum-compare-conditional
endif