新兵求助，第一次搭建QT项目编译出错

yinhao

下载了opencv 3.4.7 win安装版本
解压后写了pri文件如下
INCLUDEPATH += d:/opencv/build/includeLIBS += d:/opencv/build/x64/vc14/lib/opencv_world347.libLIBS += d:/opencv/build/x64/vc15/lib/opencv_world347.lib也把d:/opencv/build/x64/vc14/bin和d:/opencv/build/x64/vc15/bin文件夹添加到系统path新建QT控台项目如下,已添加pri文件#include <QCoreApplication>#include "opencv2/opencv.hpp"using namespace cv;int main(int argc, char *argv[]){    QCoreApplication a(argc, argv);    Mat image = imread("temp.png");    imshow("Output", image);    return a.exec();}编译时报错如下：undefined reference to `cv::String::allocate(unsigned long long)'undefined reference to `cv::Mat::deallocate()'undefined reference to `cv::fastFree(void*)'...error: ld returned 1 exit status
请教前辈，如何解决