build/core/app_certificate_validate.mk

ifeq (true,$(non_system_module))
  ifneq (,$(filter $(dir $(DEFAULT_SYSTEM_DEV_CERTIFICATE))%,$(LOCAL_CERTIFICATE)))
    CERTIFICATE_VIOLATION_MODULES += $(LOCAL_MODULE)
    ifeq (true,$(PRODUCT_ENFORCE_ARTIFACT_SYSTEM_CERTIFICATE_REQUIREMENT))
      $(if $(filter $(LOCAL_MODULE),$(PRODUCT_ARTIFACT_SYSTEM_CERTIFICATE_REQUIREMENT_WHITELIST)),,\
        $(call pretty-error,The module in product partition cannot be signed with certificate in system.))
    endif
  endif
endif