diff --git a/runtime/Makefile b/runtime/Makefile
index 983fc74ea..72187e258 100644
--- a/runtime/Makefile
+++ b/runtime/Makefile
@@ -1,22 +1,23 @@
 CC=gcc
+FLAGS=-m32 -g2 -fstack-protector-all
 
 all: gc_runtime.o gc.o runtime.o
 	ar rc runtime.a gc_runtime.o runtime.o gc.o
 
 test.o: gc.c gc.h gc_runtime.s runtime.c runtime.h runtime_common.h virt_stack.c virt_stack.h test_main.c test_util.s
-	$(CC) -o test.o -g2 -fstack-protector-all -DDEBUG_VERSION -m32 gc.c gc_runtime.s virt_stack.c runtime.c test_main.c test_util.s
+	$(CC) -o test.o -DDEBUG_VERSION $(FLAGS) gc.c gc_runtime.s virt_stack.c runtime.c test_main.c test_util.s
 
 virt_stack.o: virt_stack.h virt_stack.c
-	$(CC) -g2 -fstack-protector-all -m32 -c virt_stack.c
+	$(CC) $(FLAGS) -c virt_stack.c
 
 gc.o: gc.c gc.h
-	$(CC) -g2 -rdynamic -fstack-protector-all -m32 -c gc.c
+	$(CC) -rdynamic $(FLAGS) -c gc.c
 
 gc_runtime.o: gc_runtime.s
-	$(CC) -g2 -fstack-protector-all -m32 -c gc_runtime.s
+	$(CC) $(FLAGS) -c gc_runtime.s
 
 runtime.o: runtime.c runtime.h
-	$(CC) -g2 -fstack-protector-all -m32 -c runtime.c
+	$(CC) $(FLAGS) -c runtime.c
 
 clean:
 	$(RM) *.a *.o *~