Makefile.kcsan 739 B

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  1. # SPDX-License-Identifier: GPL-2.0
  2. # GCC and Clang accept backend options differently. Do not wrap in cc-option,
  3. # because Clang accepts "--param" even if it is unused.
  4. ifdef CONFIG_CC_IS_CLANG
  5. cc-param = -mllvm -$(1)
  6. else
  7. cc-param = --param $(1)
  8. endif
  9. # Keep most options here optional, to allow enabling more compilers if absence
  10. # of some options does not break KCSAN nor causes false positive reports.
  11. export CFLAGS_KCSAN := -fsanitize=thread \
  12. $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \
  13. $(call cc-option,$(call cc-param,tsan-compound-read-before-write=1),$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1))) \
  14. $(call cc-param,tsan-distinguish-volatile=1)