1 files changed, 7 insertions, 4 deletions
diff --git a/include.mk b/include.mk
index c2eb585..4bf417e 100644
--- a/include.mk
+++ b/include.mk
@@ -20,7 +20,10 @@
 ##  along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
 ##
 
-include ../defines.mk
+ifndef SPREADAVR_PATH
+SPREADAVR_PATH := ..
+endif
+include $(SPREADAVR_PATH)/defines.mk
 
 ## project-specific objects
 SRC := $(OBJ:%.o=%.c)
@@ -55,12 +58,12 @@ build-lufa: liblufa.a
 
 liblufa.a: Makefile
 	@echo "building external LUFA lib ($(LUFA_PATH))"
-	make -f ../lufa.mk liblufa.a
-	make -f ../lufa.mk clean
+	make -f $(SPREADAVR_PATH)/lufa.mk liblufa.a
+	make -f $(SPREADAVR_PATH)/lufa.mk clean
 
 clean-lufa:
 	@echo "cleaning external LUFA lib ($(LUFA_PATH))"
-	make -f ../lufa.mk clean
+	make -f $(SPREADAVR_PATH)/lufa.mk clean
 	rm -f liblufa.a