1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun# GCC and Clang accept backend options differently. Do not wrap in cc-option, 3*4882a593Smuzhiyun# because Clang accepts "--param" even if it is unused. 4*4882a593Smuzhiyunifdef CONFIG_CC_IS_CLANG 5*4882a593Smuzhiyuncc-param = -mllvm -$(1) 6*4882a593Smuzhiyunelse 7*4882a593Smuzhiyuncc-param = --param $(1) 8*4882a593Smuzhiyunendif 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun# Keep most options here optional, to allow enabling more compilers if absence 11*4882a593Smuzhiyun# of some options does not break KCSAN nor causes false positive reports. 12*4882a593Smuzhiyunexport CFLAGS_KCSAN := -fsanitize=thread \ 13*4882a593Smuzhiyun $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \ 14*4882a593Smuzhiyun $(call cc-option,$(call cc-param,tsan-compound-read-before-write=1),$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1))) \ 15*4882a593Smuzhiyun $(call cc-param,tsan-distinguish-volatile=1) 16