26 lines
1,004 B
Text
26 lines
1,004 B
Text
# 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)
|