Makefile:10: *** missing separator.  Stop

CONTIKI_PROJECT = hello-world

all: $(CONTIKI_PROJECT)

CUSTOM_RULE_LINK=1

%.elf: $(TARGET_STARTFILES) %.co $(PROJECT_OBJECTFILES) $(PROJECT_LIBRARIES) contiki-$(TARGET).a $(LDSCRIPT)
$(TRACE_LD)
$(Q)$(LD) $(LDFLAGS) ${filter-out $(LDSCRIPT) %.a,$^} ${filter %.a,$^} $(TARGET_LIBFILES) -o $@ -lm

CONTIKI = ../..
include $(CONTIKI)/Makefile.include