fix makefile

alib2/makefile

@@ -14,7 +14,7 @@ all: build test
-lib/$(LIBRARY): obj/
+lib/$(LIBRARY): obj/ $(OBJECTS)
 	mkdir -p lib;
 	$(CXX) $(OBJECTS) -o $@ $(LDFLAGS)
@@ -63,7 +63,7 @@ build: lib/$(LIBRARY)
-test-bin/$(TESTBIN): test-obj/ lib/$(LIBRARY)
+test-bin/$(TESTBIN): test-obj/ lib/$(LIBRARY) $(TEST_OBJECTS)
 	mkdir -p test-bin;
 	$(CXX) $(TEST_OBJECTS) -o $@ $(TEST_LDFLAGS)