1dfd402a4SMarco Elver# SPDX-License-Identifier: GPL-2.0 217168f5cSMarco Elver# GCC and Clang accept backend options differently. Do not wrap in cc-option, 317168f5cSMarco Elver# because Clang accepts "--param" even if it is unused. 417168f5cSMarco Elverifdef CONFIG_CC_IS_CLANG 517168f5cSMarco Elvercc-param = -mllvm -$(1) 617168f5cSMarco Elverelse 7e68dcd8eSMarco Elvercc-param = --param $(1) 817168f5cSMarco Elverendif 917168f5cSMarco Elver 1075d75b7aSMarco Elver# Keep most options here optional, to allow enabling more compilers if absence 1175d75b7aSMarco Elver# of some options does not break KCSAN nor causes false positive reports. 1217168f5cSMarco ElverCFLAGS_KCSAN := -fsanitize=thread \ 1375d75b7aSMarco Elver $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \ 1414e2ac8dSMarco Elver $(call cc-option,$(call cc-param,tsan-compound-read-before-write=1),$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1))) \ 1575d75b7aSMarco Elver $(call cc-param,tsan-distinguish-volatile=1) 16