fix build break

runtime/Makefile

@@ -12,24 +12,28 @@ PROJECT = libvortexrt
 
 SRCS = ./src/vx_start.S ./src/vx_print.S ./src/vx_print.c ./src/vx_spawn.c
 
-OBJS := $(addsuffix .o, $(notdir $(SRCS)))
+OBJS := $(SRCS:.S=.o) $(SRCS:.c=.o)
 
 all: $(PROJECT).a $(PROJECT).dump
 
+$(PROJECT).a: $(OBJS)
+	$(AR) rc $(PROJECT).a $^
+	
 $(PROJECT).dump: $(PROJECT).a
 	$(DP) -D $(PROJECT).a > $(PROJECT).dump
 
-%.S.o: src/%.S
-	$(CC) $(CFLAGS) -c $< -o $@
+%.o: src/%.S
+	$(CC) $(CFLAGS) -c -o $@ $<
 
-%.c.o: src/%.c
-	$(CC) $(CFLAGS) -c $< -o $@
-
-$(PROJECT).a: $(OBJS)
-	$(AR) rc $(PROJECT).a $^
+%.o: src/%.c
+	$(CC) $(CFLAGS) -c -o $@ $<
 
 .depend: $(SRCS)
 	$(CC) $(CFLAGS) -MM $^ > .depend;
 
 clean:
-	rm -rf *.a *.o *.dump .depend 
+	rm -rf *.a *.o *.dump .depend
+
+ifneq ($(MAKECMDGOALS),clean)
+    -include .depend
+endif