ifneq (,$(filter cortex-m23 cortex-m0%,$(CPU_CORE)))
  USEMODULE += qdsa_asm
endif

ifneq (,$(filter arch_avr8,$(FEATURES_USED)))
  USEMODULE += qdsa_asm
endif

ifeq (,$(filter qdsa_impl_%,$(USEMODULE)))
  ifneq (,$(filter cortex-m23 cortex-m0%,$(CPU_CORE)))
    USEMODULE += qdsa_impl_arm
  else ifneq (,$(filter arch_avr8,$(FEATURES_USED)))
    USEMODULE += qdsa_impl_avr
  else
    USEMODULE += qdsa_impl_cref
  endif
endif

# qDsa is not 16 bit compatible
FEATURES_BLACKLIST += arch_16bit