Combine xz command into a single line

src/freedombone-image-makefile

 	XZ =
 	SIGN =
 else
-    XZ = xz --no-warn --verbose --keep --threads=0 -3
+    XZ = xz --no-warn --verbose --keep --threads=0 -3 $(IMAGE)
     SIGN = -gpg --output $(SIGNATURE) --detach-sig $(ARCHIVE)
 endif
 
 	$(eval MACHINE = beaglebone)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = cubieboard2)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = pcduino3)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = cubietruck)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval IMAGE = $(NAME).img)
 	$(MAKE_IMAGE)
 	rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 
 	$(eval MACHINE = a20-olinuxino-lime2)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = a20-olinuxino-micro)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = all)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = all)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = all)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	$(eval MACHINE = all)
 	$(MAKE_IMAGE)
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	# Convert image to qemu format
 	qemu-img convert -O qcow2 $(NAME).img $(NAME).qcow2
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."
 	# Convert image to qemu format
 	qemu-img convert -O qcow2 $(NAME).img $(NAME).qcow2
 	@rm -f $(ARCHIVE)
-	$(XZ) $(IMAGE)
+	$(XZ)
 	@echo ""
 	$(SIGN)
 	@echo "Build complete."