C++ mingw32 make.exe[3]：***[CMakeFiles\myAnswerCpp.dir\build.make:102:myAnswerCpp.exe]错误1

我使用vscode、cmake在Windows中编译opencv项目。我在构建时遇到了一个问题。我很困惑

之前有一个错误，因为OpenCV没有生成完成。完全构建后，我将我的CMakeLists.txt、

set（OpenCV\u DIR D:/OpenCV/OpenCV/sources/build）

更改为

set（OpenCV\u DIR D:/OpenCV/OpenCV/build/x64/vc15/lib）

。但也有一些新的错误

这是我的CMakeLists.txt

PROJECT(myAnswerCpp)
cmake_minimum_required(VERSION 3.5)
set(OpenCV_DIR D:/OpenCV/opencv/build/x64/vc15/lib)
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
add_executable(myAnswerCpp myAnswerCpp1.cpp)
link_directories(${OpenCV_LIBRARY_DIRS})
target_link_libraries(myAnswerCpp ${OpenCV_LIBS})

这是我的测试代码

#include <iostream>
#include <opencv2/opencv.hpp>

using namespace std;
using namespace cv;

int main(){
    Mat src = imread("C:/Users/87689/Desktop/bit.JPG", IMREAD_COLOR );
    imshow("bit",src);
    waitKey(0);
    return 0;
}

#包括
#包括
使用名称空间std；
使用名称空间cv；
int main（）{
Mat src=imread（“C:/Users/87689/Desktop/bit.JPG”，imread_COLOR）；
imshow（“位”，src）；
等待键（0）；
返回0；
}

这是输出信息

[build] Starting build
[proc] Executing command: D:\CMake\bin\cmake.EXE --build d:/ImageProcessing/myAnswerCpp/build --config Debug --target myAnswerCpp -- -j 6
[build] [ 50%] Linking CXX executable myAnswerCpp.exe
[build] CMakeFiles\myAnswerCpp.dir/objects.a(myAnswerCpp1.cpp.obj): In function `main':
[build] D:/ImageProcessing/myAnswerCpp/myAnswerCpp1.cpp:14: undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
[build] D:/ImageProcessing/myAnswerCpp/myAnswerCpp1.cpp:15: undefined reference to `cv::imshow(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)'
[build] D:/ImageProcessing/myAnswerCpp/myAnswerCpp1.cpp:16: undefined reference to `cv::waitKey(int)'
[build] CMakeFiles\myAnswerCpp.dir/objects.a(myAnswerCpp1.cpp.obj): In function `cv::Mat::~Mat()':
[build] D:/OpenCV/opencv/build/include/opencv2/core/mat.inl.hpp:739: undefined reference to `cv::fastFree(void*)'
[build] CMakeFiles\myAnswerCpp.dir/objects.a(myAnswerCpp1.cpp.obj): In function `cv::Mat::release()':
[build] D:/OpenCV/opencv/build/include/opencv2/core/mat.inl.hpp:851: undefined reference to `cv::Mat::deallocate()'
[build] collect2.exe: error: ld returned 1 exit status
[build] mingw32-make.exe[3]: *** [CMakeFiles\myAnswerCpp.dir\build.make:102: myAnswerCpp.exe] Error 1
[build] mingw32-make.exe[2]: *** [CMakeFiles\Makefile2:75: CMakeFiles/myAnswerCpp.dir/all] Error 2
[build] mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:87: CMakeFiles/myAnswerCpp.dir/rule] Error 2
[build] mingw32-make.exe: *** [Makefile:117: myAnswerCpp] Error 2
[build] Build finished with exit code 2

[build]开始构建
[proc]执行命令：D:\CMake\bin\CMake.EXE--build D:/ImageProcessing/myAnswerCpp/build--config Debug--target myAnswerCpp--j 6
[build][50%]链接CXX可执行文件myAnswerCpp.exe
[build]cmakfiles\myAnswerCpp.dir/objects.a（myAnswerCpp1.cpp.obj）：在函数“main”中：
[build]D:/ImageProcessing/myAnswerCpp/myAnswerCpp1.cpp:14:cv:：imread（std:uu cx11:：basic_string const&，int）的未定义引用
[build]D:/ImageProcessing/myAnswerCpp/myAnswerCpp1.cpp:15:cv:：imshow（std:u cx11:：basic_string const&，cv:_inputarrayconst&）的未定义引用
[build]D:/ImageProcessing/myAnswerCpp/myAnswerCpp1.cpp:16:未定义对“cv:：waitKey（int）”的引用
[build]cmakfiles\myAnswerCpp.dir/objects.a（myAnswerCpp1.cpp.obj）：在函数“cv:：Mat:：~Mat（）”中：
[build]D:/OpenCV/OpenCV/build/include/opencv2/core/mat.inl.hpp:739:对'cv:：fastFree（void*）的未定义引用
[build]cmakfiles\myAnswerCpp.dir/objects.a（myAnswerCpp1.cpp.obj）：在函数'cv:：Mat:：release（）'中：
[build]D:/OpenCV/OpenCV/build/include/opencv2/core/mat.inl.hpp:851:对'cv:：mat:：deallocate（）的未定义引用
[build]collect2.exe:错误：ld返回1退出状态
[build]mingw32 make.exe[3]：***[CMakeFiles\myAnswerCpp.dir\build.make:102:myAnswerCpp.exe]错误1
[build]mingw32 make.exe[2]：***[CMakeFiles\Makefile2:75:CMakeFiles/myAnswerCpp.dir/all]错误2
[build]mingw32 make.exe[1]：***[CMakeFiles\Makefile2:87:CMakeFiles/myAnswerCpp.dir/rule]错误2
[build]mingw32-make.exe:**[Makefile:117:myAnswerCpp]错误2
[生成]生成已完成，退出代码为2

---

请帮我解决错误。多谢各位

变量

OpenCV\u DIR

应该引用已安装的OpenCV，但是分配给该变量的目录的

build

组件表明您刚刚构建了OpenCV。OpenCV是否完全在您的计算机上构建？例如，您的计算机上是否存在文件

D:/OpenCV/OpenCV/sources/build/lib/libopencv_dnn411.dll.a

？谢谢大家。完全构建后，我将我的CMakeLists.txt、

set（OpenCV\u DIR D:/OpenCV/OpenCV/sources/build）

更改为

set（OpenCV\u DIR D:/OpenCV/OpenCV/build/x64/vc15/lib）

。但也有一些新的错误。