diff options
Diffstat (limited to 'scripts/Makefile.kcsan')
| -rw-r--r-- | scripts/Makefile.kcsan | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/scripts/Makefile.kcsan b/scripts/Makefile.kcsan new file mode 100644 index 000000000000..bd4da1af5953 --- /dev/null +++ b/scripts/Makefile.kcsan @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 +ifdef CONFIG_KCSAN + +# 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. +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-instrument-read-before-write=1)) \ + $(call cc-param,tsan-distinguish-volatile=1) + +endif # CONFIG_KCSAN |