core/config_sanitizers.mk

##############################################
## Perform configuration steps for sanitizers.
##############################################

# Configure SANITIZE_HOST.
ifdef LOCAL_IS_HOST_MODULE
ifeq ($(SANITIZE_HOST),true)
ifneq ($(strip $(LOCAL_CLANG)),false)
ifneq ($(strip $(LOCAL_ADDRESS_SANITIZER)),false)
  LOCAL_SANITIZE := address
endif
endif
endif
endif

my_sanitize := $(LOCAL_SANITIZE)

# Keep compatibility for LOCAL_ADDRESS_SANITIZER until all targets have moved to
# `LOCAL_SANITIZE := address`.
ifeq ($(strip $(LOCAL_ADDRESS_SANITIZER)),true)
  my_sanitize += address
endif

# Don't apply sanitizers to NDK code.
ifdef LOCAL_SDK_VERSION
  my_sanitize :=
endif

unknown_sanitizers := $(filter-out address, \
                      $(filter-out undefined,$(my_sanitize)))

ifneq ($(unknown_sanitizers),)
  $(error Unknown sanitizers: $(unknown_sanitizers))
endif

ifneq ($(my_sanitize),)
  my_clang := true

  fsanitize_arg := $(subst $(space),$(comma),$(my_sanitize)),
  my_cflags += -fsanitize=$(fsanitize_arg)

  ifdef LOCAL_IS_HOST_MODULE
    my_ldflags += -fsanitize=$(fsanitize_arg)
  endif
endif

ifneq ($(filter address,$(my_sanitize)),)
  # Frame pointer based unwinder in ASan requires ARM frame setup.
  LOCAL_ARM_MODE := arm
  my_cflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS)
  my_ldflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS)
  ifdef LOCAL_IS_HOST_MODULE
    # -nodefaultlibs (provided with libc++) prevents the driver from linking
    # libraries needed with -fsanitize=address. http://b/18650275 (WAI)
    my_ldlibs += -ldl -lpthread
  else
    my_shared_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES)
    my_static_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)
  endif
endif

ifneq ($(filter undefined,$(my_sanitize)),)
  ifdef LOCAL_IS_HOST_MODULE
    my_ldlibs += -ldl
  else
    $(error ubsan is not yet supported on the target)
  endif
endif