Greg Kroah-Hartman
5d392794b2
Link: https://lore.kernel.org/r/20251127144032.705323598@linuxfoundation.org Tested-by: Pavel Machek (CIP) <pavel@denx.de> Link: https://lore.kernel.org/r/20251127150346.125775439@linuxfoundation.org Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Dileep Malepu <dileep.debian@gmail.com> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
27 lines
1004 B
Makefile
27 lines
1004 B
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
# GCC and Clang accept backend options differently. Do not wrap in cc-option,
|
|
# because Clang accepts "--param" even if it is unused.
|
|
ifdef CONFIG_CC_IS_CLANG
|
|
cc-param = -mllvm -$(1)
|
|
else
|
|
cc-param = --param $(1)
|
|
endif
|
|
|
|
# Keep most options here optional, to allow enabling more compilers if absence
|
|
# of some options does not break KCSAN nor causes false positive reports.
|
|
kcsan-cflags := -fsanitize=thread -fno-optimize-sibling-calls \
|
|
$(call cc-option,$(call cc-param,tsan-compound-read-before-write=1),$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1))) \
|
|
$(call cc-param,tsan-distinguish-volatile=1)
|
|
|
|
ifdef CONFIG_CC_IS_GCC
|
|
# GCC started warning about operations unsupported by the TSan runtime. But
|
|
# KCSAN != TSan, so just ignore these warnings.
|
|
kcsan-cflags += -Wno-tsan
|
|
endif
|
|
|
|
ifndef CONFIG_KCSAN_WEAK_MEMORY
|
|
kcsan-cflags += $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0))
|
|
endif
|
|
|
|
export CFLAGS_KCSAN := $(kcsan-cflags)
|