fix: mkdir bin & lib to build

plat/diameter/makefile

@@ -19,11 +19,12 @@ CFLAGS=-Wall -g -DDEBUG -DX86_64 -lm -lrt -ldl -lsctp -lgcrypt -lgnutls -lpthrea
 CC=gcc
 
 $(TGT):$(OBJS)
-#	$(CC) -o $(TGT) $(CFLAGS) $(MAIN) $(SRCS) $(INCDIR) $(LIBS)
-#	chmod a+x $(TGT)
-	ar r ./lib/libdiameter.a $(OBJS)
+	if [ ! -d ./lib ]; then mkdir ./lib; fi
+	$(AR) -rcs ./lib/libdiameter.a $(OBJS)
 
 $(OBJS):%.o:%.c
 	$(CC) $(CFLAGS) -c -o $@ $< $(INCDIR)
+
 clean:
 	rm -rf $(OBJS) $(TGT)
+	rm -rf ./lib/libdiameter.a