PKG_BUILDDIR ?= $(BINDIRBASE)/pkg/$(BOARD)/tinydtls
  
  INCLUDES += -I$(PKG_BUILDDIR)
  
  ifneq (,$(filter tinydtls_aes,$(USEMODULE)))
    DIRS += $(PKG_BUILDDIR)/aes
  endif
  
  ifneq (,$(filter tinydtls_ecc,$(USEMODULE)))
    DIRS += $(PKG_BUILDDIR)/ecc
  endif
  
  ifneq (,$(filter tinydtls_sha2,$(USEMODULE)))
    DIRS += $(PKG_BUILDDIR)/sha2
  endif