libcoap_src = pdu.c net.c coap_cache.c coap_debug.c encode.c uri.c subscribe.c resource.c str.c option.c async.c block.c mem.c coap_io.c coap_session.c coap_notls.c coap_hashkey.c address.c coap_tcp.c

libcoap_dir := $(filter %libcoap,$(APPDS))
vpath %c $(libcoap_dir)/src

# set include path for coap sources
CFLAGS += -I$(libcoap_dir)/include/coap2