Don't specify arch/platform/zoul as a directory twice
@@ -24,7 +24,7 @@ CFLAGS += -DDATE="\"`date +"%02u %02d %02m %02y %02H %02M %02S"`\""
### Configure the build for the board and pull in board-specific sources
CONTIKI_TARGET_DIRS += . dev
-CONTIKI_TARGET_DIRS += . $(BOARD)
+CONTIKI_TARGET_DIRS += $(BOARD)
PLATFORM_ROOT_DIR = $(ARCH_PATH)/platform/$(TARGET)
### Include the board dir if one exists
