# 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.

  export CFLAGS_KCSAN := -fsanitize=thread \

  	$(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -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)