INCLUDES += -I$(RIOTBASE)/pkg/lwip/include \
            -I$(BINDIRBASE)/pkg/$(BOARD)/lwip/src/include

ifneq (,$(filter lwip_conn,$(USEMODULE)))
  DIRS += $(RIOTBASE)/pkg/lwip/contrib/conn
endif
ifneq (,$(filter lwip_conn_ip,$(USEMODULE)))
  DIRS += $(RIOTBASE)/pkg/lwip/contrib/conn/ip
endif
ifneq (,$(filter lwip_conn_udp,$(USEMODULE)))
  DIRS += $(RIOTBASE)/pkg/lwip/contrib/conn/udp
endif
ifneq (,$(filter lwip_contrib,$(USEMODULE)))
  DIRS += $(RIOTBASE)/pkg/lwip/contrib
endif
ifneq (,$(filter lwip_netdev2,$(USEMODULE)))
  DIRS += $(RIOTBASE)/pkg/lwip/contrib/netdev2
endif