Makefile: fixed build infrastructure for Contiki examples

The new structure of libcoap allows to clone Contiki in a
subdirectory. The example build now uses Makefile to first clone
Contiki and then invoke Makefile.contiki for the actual build.
The TARGET is set to minimal-net by default but can be changed to
any other (tested) target.

examples/contiki/Makefile

@@ -1,27 +1,11 @@
-NODE_ADDR?=0x1000
+CONTIKI=contiki
+TARGET?=minimal-net
 
 all: server
 
-contiki:
-	git clone https://github.com/contiki-os/contiki.git
+$(CONTIKI):
+	git clone https://github.com/contiki-os/contiki.git $@
+	cd $(CONTIKI)/apps && ln -s ../../../.. libcoap
 
-# contiki and coap opts
-CONTIKI=contiki
-
-CFLAGS += -I.
-
-# contiki library
-
-PLATFORM_VPATH = $(CONTIKI)/cpu/native $(CONTIKI)/cpu/native/net $(CONTIKI)/platform/minimal-net
-#PLATFORM_CPPFLAGS =
-PLATFORM_CFLAGS = -I$(CONTIKI)/cpu/native/ -I$(CONTIKI)/platform/minimal-net
-PLATFORM_OBJS = contiki-main.o tapdev6.o tapdev-drv.o clock.o serial-line.o
-
-CONTIKIOBJS = $(PLATFORM_OBJS) ringbuf.o autostart.o list.o memb.o uiplib.o uip-nd6.o uip-neighbor.o uip-ds6.o uip-ds6-nbr.o linkaddr.o uip.o uip-udp-packet.o random.o ctimer.o timer.o etimer.o stimer.o procinit.o process.o udp-socket.o uip-icmp6.o tcpip.o uip-packetqueue.o uip-ds6-route.o nbr-table.o uip6.o uip.o uip-debug.o packetbuf.o
-vpath %.c $(CONTIKI)/core $(CONTIKI)/core/lib $(CONTIKI)/core/sys $(CONTIKI)/core/dev $(CONTIKI)/core/net $(CONTIKI)/core/net/ip $(CONTIKI)/core/net/ipv4 $(CONTIKI)/core/net/ipv6 $(CONTIKI)/core/loader $(CONTIKI)/core/cfs $(PLATFORM_VPATH)
-
-CFLAGS += -DCONTIKI_TARGET_MINIMAL_NET=1 -DWITH_UIP6=1 -DUIP6_CONF_IPV6=1 -DNETSTACK_CONF_WITH_IPV6=1 -DUIP_CONF_IPV6_RPL=0 -URPL_BORDER_ROUTER -DAUTOSTART_ENABLE -DNODE_ADDR=$(NODE_ADDR)
-
-CFLAGS += -g3 -Wall -pedantic -O0
-
-include Makefile.common
+server:	$(CONTIKI)
+	$(MAKE) -f Makefile.contiki V=1 CONTIKI=$(CONTIKI) TARGET=$(TARGET) NODE_ADDR=0x1000 server

examples/contiki/Makefile.common

@@ -1,36 +0,0 @@
-top_srcdir ?= ../..
-
-# coap library
-
-CFLAGS += -std=gnu99
-
-CFLAGS += -I$(top_srcdir)/include/coap -DCOAP_RESOURCES_NOHASH
-
-vpath %.c $(top_srcdir)/src
-
-COAPOBJS = net.o debug.o option.o resource.o hashkey.o pdu.o encode.o subscribe.o coap_io.o block.o uri.o mem.o
-
-CFLAGS += -I$(CONTIKI)/core/ -I$(CONTIKI)/core/sys/ -I$(CONTIKI)/core/net/ip/ -I$(CONTIKI)/core/lib/ $(PLATFORM_CFLAGS)
-CPPFLAGS += $(PLATFORM_CPPFLAGS)
-
-# making an executable out of all of it
-
-OBJS = server.o ${CONTIKIOBJS} ${COAPOBJS}
-
-server: ${OBJS}
-
-symbols.h:	$(CONTIKI)/tools/empty-symbols.h
-	cp -p $< $@
-
-symbols.c:	$(CONTIKI)/tools/empty-symbols.c
-	cp -p $< $@
-
-symbols.o:	symbols.c symbols.h
-
-clean:
-	rm -f core server ${OBJS} symbols.c symbols.h
-
-distclean: clean
-	rm -rf *~ *.o contiki
-
-.PHONY: clean distclean contiki

examples/contiki/Makefile.contiki

@@ -1,15 +1,13 @@
-NODE_ADDR?=0x1000
-
 ########################################################################
 # platform-specific options
 
 ifeq ($(TARGET), econotag)
 CONTIKI_WITH_RPL=0
-CFLAGS += -DUIP_CONF_TCP=0
+CFLAGS += -DUIP_CONF_TCP=0 -DCOAP_MAX_BLOCK_SZX=1
 endif
 
 ifeq ($(TARGET), mbxxx)
-CFLAGS += -DUIP_CONF_TCP=0 -DHAVE_ASSERT_H -DHAVE_LIMITS_H
+CFLAGS += -DUIP_CONF_TCP=0  -DCOAP_MAX_BLOCK_SZX=1 -DHAVE_ASSERT_H -DHAVE_LIMITS_H
 STM32W_CPUREV=CC
 #STM32W_CPUREV=xB
 endif
@@ -17,32 +15,14 @@ endif
 # usually, you should not need changing anything beyond this line
 ########################################################################
 
+CONTIKI?=../../../..
+
+ifneq ($(NODE_ADDR),)
+      CFLAGS += -DNODE_ADDR=$(NODE_ADDR)
+endif
+
 all: server
 
-CONTIKI=../../../..
-#CFLAGS += -DPROJECT_CONF_H=\"project-conf.h\"
-
-CFLAGS += -DNODE_ADDR=$(NODE_ADDR) -DCOAP_MAX_BLOCK_SZX=1
-
-#ifeq ($(UIP_CONF_IPV6_RPL),0)
-#CFLAGS += -DUIP_CONF_IPV6_RPL=0 -DRPL_BORDER_ROUTER=0 -DUIP_CONF_ROUTER=0
-#endif
-
-#WITH_UIP6=1
-#UIP_CONF_IPV6=1
-
-# ifeq ($(TARGET), minimal-net)
-# CFLAGS += -DHAVE_ASSERT_H -DWITH_UIP6=1
-# ifneq ($(ROLE),client)
-# 	UIP_LLADDR="{0x00,0x06,0x98,0x00,0x02,0x32}"
-# 	CFLAGS+= -DUIP_CONF_LLADDR=$(UIP_LLADDR)
-# else
-# 	UIP_LLADDR="{0x00,0x06,0x98,0x00,0x02,0x30}"
-# 	CFLAGS+= -DUDP_CONNECTION_ADDR="fe80::206:98ff:fe00:232" \
-# 		 -DUIP_CONF_LLADDR=$(UIP_LLADDR)
-# endif
-# endif
-
 CFLAGS += -ffunction-sections
 LDFLAGS += -Wl,--gc-sections,--undefined=_reset_vector__,--undefined=InterruptVectors,--undefined=_copy_data_init__,--undefined=_clear_bss_init__,--undefined=_end_of_init__