致命错误LNK1120：5 个未解决的外部问题

问：

我正在运行 c++ 简单的 opencv 程序，它给了我这样的错误

Starting build...
cl.exe /Zi /EHsc /nologo /FeC:\Users\User\Documents\KULIAH\LAB_SOFTWARE\Program_C\belajar_syntax\halo.exe C:\Users\User\Documents\KULIAH\LAB_SOFTWARE\Program_C\belajar_syntax\halo.cpp -I C:\opencv\build\include /link /LIBPATH:C:\opencv\build\x64\vc15\lib
halo.cpp
halo.obj : error LNK2019: unresolved external symbol "public: __thiscall cv::Mat::Mat(int,int,int,class cv::Scalar_<double> const &)" (??0Mat@cv@@QAE@HHHABV?$Scalar_@N@1@@Z) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "public: __thiscall cv::Mat::~Mat(void)" (??1Mat@cv@@QAE@XZ) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "void __cdecl cv::destroyAllWindows(void)" (?destroyAllWindows@cv@@YAXXZ) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "int __cdecl cv::waitKey(int)" (?waitKey@cv@@YAHH@Z) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "void __cdecl cv::imshow(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class cv::_InputArray const &)" (?imshow@cv@@YAXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV_InputArray@1@@Z) referenced in function _main
C:\Users\User\Documents\KULIAH\LAB_SOFTWARE\Program_C\belajar_syntax\halo.exe : fatal error LNK1120: 5 unresolved externals

Build finished with error(s).
The terminal process terminated with exit code: -1.

Terminal will be reused by tasks, press any key to close it.

> Executing task: C/C++: cl.exe build active file <

Starting build...
cl.exe /Zi /EHsc /nologo /FeC:\Users\User\Documents\KULIAH\LAB_SOFTWARE\Program_C\belajar_syntax\halo.exe C:\Users\User\Documents\KULIAH\LAB_SOFTWARE\Program_C\belajar_syntax\halo.cpp -I C:\opencv\build\include /link /LIBPATH:C:\opencv\build\x64\vc15\lib\**
halo.cpp
halo.obj : error LNK2019: unresolved external symbol "public: __thiscall cv::Mat::Mat(int,int,int,class cv::Scalar_<double> const &)" (??0Mat@cv@@QAE@HHHABV?$Scalar_@N@1@@Z) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "public: __thiscall cv::Mat::~Mat(void)" (??1Mat@cv@@QAE@XZ) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "void __cdecl cv::destroyAllWindows(void)" (?destroyAllWindows@cv@@YAXXZ) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "int __cdecl cv::waitKey(int)" (?waitKey@cv@@YAHH@Z) referenced in function _main
halo.obj : error LNK2019: unresolved external symbol "void __cdecl cv::imshow(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class cv::_InputArray const &)" (?imshow@cv@@YAXABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV_InputArray@1@@Z) referenced in function _main
C:\Users\User\Documents\KULIAH\LAB_SOFTWARE\Program_C\belajar_syntax\halo.exe : fatal error LNK1120: 5 unresolved externals

我怀疑这是因为库链接器问题，这是我的tasks.json

{
  "tasks": [
    {
      "type": "cppbuild",
      "label": "C/C++: cl.exe build active file",
      "command": "cl.exe",
      "args": [
        "/Zi",
        "/EHsc",
        "/nologo",
        "/Fe${fileDirname}\\${fileBasenameNoExtension}.exe",
        "${file}",
        "-I",
        "C:\\opencv\\build\\include",
        "/link",
        "/LIBPATH:C:\\opencv\\build\\x64\\vc15\\lib\\"
      ],
      "options": {
        "cwd": "${fileDirname}"
      },
      "problemMatcher": [
        "$msCompile"
      ],
      "group": {
        "kind": "build",
        "isDefault": true
      },
      "detail": "Task generated by Debugger."
    }
  ],
  "version": "2.0.0"
}

这是我运行的代码

#include <iostream>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;
int main() {
  // Create blue image
  Mat blueImage(10, 10, CV_8UC1, Scalar(0, 0, 255));

  // Display the image.
  imshow("grayscale image", blueImage);

  // Wait for a keystroke.
  waitKey(0);

  // Destroys all the windows created
  destroyAllWindows();
  return 0;
}

根据我用来编译程序。tasks.jsoncl.exe

在我从 python 转向学习 opencv 后，我是 C++ 环境的新手，因为我听说 C++ 很快。就像我说的，我有链接并包含在参数中。但仍然有错误。cl.exe

我也尝试更改仍然给我错误。vc15vc14

我没有从源代码安装 opencv，但我从发布官方网站下载了名称opencv-4.6.0-vc14_vc15.exe

这是里面的东西