我想测试在Linux下如练级JsonCpp静态库

我已经生成了静态文件，如图所示

 我建立了一个叫做test的项目，项目目录为

test/
├── src/
│ ├── run.cpp
├── lib/
│ ├── libjsoncpp.a
└── build

其中run.cpp的代码为

#include <json/json.h>
#include <string>
#include <iostream>
using namespace std;

int main()
{
	//std::string strValue = "{\"name\":\"json\",\"array\":[{\"cpp\":\"jsoncpp\"},{\"java\":\"jsoninjava\"},{\"php\":\"support\"}]}";

	// 构建json数组
	Json::Value array;
	Json::Value root;
	Json::Value person;

	Json::FastWriter writer;

	person["name"] = "allen";
	person["age"] = 10;
	person["sex"] = "male";
	root.append(person);

	person["name"] = "keiv";
	person["age"] = 20;
	person["sex"] = "female";
	root.append(person);

	person["name"] = "lihua";
	person["age"] = 10;
	person["sex"] = "female";
	root.append(person);

	// 添加数组格式
	// array["array"].append(root);

	// 子节点挂到根节点上
	array["array"] = Json::Value(root);

	string data = writer.write(array);

	cout<<data<<endl;
	// cout<<array.toStyledString()<<endl;

	// 解析Json字符串
	string strValue = array.toStyledString(); // json对象转变为json字符串
	cout << strValue << endl;

	Json::Reader reader;
	Json::Value value;

	if (reader.parse(strValue, value)) // json字符串转为json对象
	{
		for (unsigned int i = 0; i < value["array"].size(); i++)
		{
			string name = value["array"][i]["name"].asString();
			int age = value["array"][i]["age"].asInt();
			string sex = value["array"][i]["sex"].asString();

			cout << name << " " << age << " " << sex << endl;
		}
	}

	return 0;
}

然后我就编写了一个makefile文件。其内容为

CXX = g++
CXXFLAGS = -std=c++11 -Wall
LIBS = -L ./lib -ljsoncpp
INCLUDE = -I./include

SRCDIR = src
OBJDIR = build

SOURCES := $(shell find $(SRCDIR) -name *.cpp)
OBJECTS := $(SOURCES:$(SRCDIR)/%.cpp=$(OBJDIR)/%.o)
DEPENDS := $(OBJECTS:.o=.d)
EXECUTABLE = test

.PHONY: all clean

all: $(EXECUTABLE)

$(EXECUTABLE): $(OBJECTS)
        $(CXX) $(CXXFLAGS) $(LIBS) $(INCLUDE) $^ -o $@

$(OBJDIR)/%.o: $(SRCDIR)/%.cpp
        @mkdir -p $(@D)
        $(CXX) $(CXXFLAGS) $(INCLUDE) -MMD -c $< -o $@

clean:
        $(RM) -r $(OBJDIR) $(EXECUTABLE)

但是在make文件时报错：

 我看它似乎没有链接进来，有没有大佬

这是什么问题