Opencv C++ MinGW VSCode致命错误编译

Question

大家好我想使用VSCode MinGW C++和OpenCV创建一个简单的opencv项目,但由于未知原因,我得到这个错误我该怎么办？

我想提一下,Visual studio 2017我可以在x64架构上运行main.cpp.

我想在VSCode上运行的代码与我在Visual Studio 2017上运行的代码相同.

经过10天的尝试,50 points如果有人证明以下情况,我会放弃:

• VSCODE
• C++ 17
• OpenCV的
• 在Windows 10 x64架构上

一个成功的构建.

SRC/main.cpp中

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <iostream>

using namespace cv;
using namespace std;

int main() {

    Mat image;
    image = imread("./22.png", IMREAD_COLOR); // Read the file

    namedWindow("Display window", WINDOW_AUTOSIZE); // Create a window for display.

    if (!image.data) // Check for invalid input
    {
        cout << "Could not open or find the image" << std::endl;
    } else {        // Image is good!

        imshow("Display window", image); // Show our image inside it.
    }

    waitKey(0);
    return 0;
}

在我的VSCode编辑器中,我尝试使用tasks.json构建应用程序 CTRL + SHIFT + B

tasks.json

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "echo",
            "type": "shell",
            "command": "",
            "args": [
                "g++", 
                "-I", "C:\\vcpkg\\installed\\x64-windows\\include",
                "-L", "C:\\vcpkg\\installed\\x64-windows\\lib",
                "./src/main.cpp",
                "-lopencv_core341",
                "-lopencv_highgui341",
                "-o app"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            }
        }
    ]
}

c_cpp_properties.json

{
    "configurations": [
        {
            "name": "Win32",
            "includePath": [
                "${workspaceFolder}/**",
                "${workspaceFolder}/src",
                "C:/vcpkg/installed/x64-windows/include",
                "C:/vcpkg/installed/x64-windows/lib"

            ],
            "browse": {
                "path": [

            ],
                "limitSymbolsToIncludedHeaders": true
            },
            "defines": [
                "_DEBUG",
                "UNICODE",
                "_UNICODE"
            ],
            "windowsSdkVersion": "10.0.17134.0",
            "compilerPath": "C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.14.26428/bin/Hostx64/x64/cl.exe",
            "cStandard": "c11",
            "cppStandard": "c++17",
            "intelliSenseMode": "msvc-x64",
            "C_Cpp.intelliSenseEngine": "Tag Parser"
        }
    ],
    "version": 4
}

我得到了这个错误

> Executing task: g++ main.cpp -I C:/vcpkg/installed/x64-windows/include -L C:/vcpkg/installed/x64-windows/lib -lopencv_core341 -lopencv_highgui341 -o app <

C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text+0x51): undefined reference to `cv::imread(cv::String const&, int)'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text+0xa2): undefined reference to `cv::namedWindow(cv::String const&, int)'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text+0x119): undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text+0x139): undefined reference to `cv::waitKey(int)'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text$_ZN2cv6StringC1EPKc[__ZN2cv6StringC1EPKc]+0x42): undefined reference to `cv::String::allocate(unsigned int)'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text$_ZN2cv6StringD1Ev[__ZN2cv6StringD1Ev]+0xf): undefined reference to `cv::String::deallocate()'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text$_ZN2cv3MatD1Ev[__ZN2cv3MatD1Ev]+0x2d): undefined reference to `cv::fastFree(void*)'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text$_ZN2cv3Mat7releaseEv[__ZN2cv3Mat7releaseEv]+0x40): undefined reference to `cv::Mat::deallocate()'
C:\Users\giorg\AppData\Local\Temp\ccNFIHQq.o:main.cpp:(.text$_ZN2cv3MataSEOS0_[__ZN2cv3MataSEOS0_]+0xb4): undefined reference to `cv::fastFree(void*)'
collect2.exe: error: ld returned 1 exit status
The terminal process terminated with exit code: 1

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

我已经使用vcpkgusing这个命令生成了opencv库vcpkg install opencv,我认为这样做非常好.

在我vspkg使用Visual Studio 2017测试所有文件后生成所有文件并且可以工作,但我的主要目标是使用VSCode但是我没有任何线索为什么我得到错误.

告诉你我已经生成了文件.

C:\ vcpkg \安装\ x64的Windows \包括

C:\ vcpkg \安装\ x64的Windows \包括\ opencv2

C:\ vcpkg \安装\ x64的Windows\LIB

Answer 1

我尝试在 Windows 10 x64 上的 Visual Studio Code 中使用 MinGW-w64 g++ 成功构建和运行 OpenCV 3.4.1 的 C++ 程序。但我不知道这是否真的是“正确”的方法。 截屏

1. 下载并安装 MinGW-w64 选择x86_64-8.1.0-posix-seh-rt_v6-rev0版本或更新版本http://mingw-w64.org/doku.php/start。
2. 打开 CMD 并转到 C:\ 然后克隆此存储库https://github.com/huihut/OpenCV-MinGW-Build然后签出OpenCV-3.4.1-x64分支或只需执行此命令git clone https://github.com/huihut/OpenCV-MinGW-Build.git -b OpenCV-3.4.1-x64
3. 将 Mingw-w64 bin 文件夹添加到系统路径（对我来说路径是C:\Program Files\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin）
4. 将您之前克隆的 OpenCV mingw bin 文件夹添加到系统路径（对我来说，路径是C:\OpenCV-MinGW-Build\x64\mingw\bin）
5. 现在，您已经可以使用 CMD 使用 g++ 构建程序，只需键入g++ test.cpp -IC:\OpenCV-MinGW-Build\include -LC:\OpenCV-MinGW-Build\x64\mingw\bin -llibopencv_calib3d341 -llibopencv_core341 -llibopencv_dnn341 -llibopencv_features2d341 -llibopencv_flann341 -llibopencv_highgui341 -llibopencv_imgcodecs341 -llibopencv_imgproc341 -llibopencv_ml341 -llibopencv_objdetect341 -llibopencv_photo341 -llibopencv_shape341 -llibopencv_stitching341 -llibopencv_superres341 -llibopencv_video341 -llibopencv_videoio341 -llibopencv_videostab341并将 更改test.cpp为您的 .cpp 文件名。
6. 使用 Visual Studio Code 打开 .cpp 文件，然后安装 Code Runner 扩展https://marketplace.visualstudio.com/items?itemName=formulahendry.code-runner，我使用 Code Runner 轻松运行我的程序。
7. 按Ctrl + commaVisual Studio Code，然后搜索并更改输入"code-runner.executorMap":内容，您可以将其应用于用户设置或仅应用于工作区设置。`"cpp:""cd $dir && g++ $fileName -o $fileNameWithoutExt -IC:/OpenCV-MinGW-Build/include -LC:/OpenCV-MinGW-Build/x64/mingw/bin -llibopencv_calib3d341 -llibopencv_core341 -llibopencv_dnn341 -llibopencv_features2d341 -llibopencv_flann341 -llibopencv_highgui341 -llibopencv_imgcodecs341 -llibopencv_imgproc341 -llibopencv_ml341 -llibopencv_objdetect341 -llibopencv_photo341 -llibopencv_shape341 -llibopencv_stitching341 -llibopencv_superres341 -llibopencv_video341 -llibopencv_videoio341 -llibopencv_videostab341 && $dir$fileNameWithoutExt",
8. 之后，只需按Ctrl+Alt+N“构建并运行”您的程序或按“播放”按钮即可。

tasks.json我相信您也可以通过添加到使用 Visual Studio Code C/C++ 扩展调试的部分-IC:\OpenCV-MinGW-Build\include ..来应用此功能。args您还可以添加"C:/OpenCV-MinGW-Build/include"到c_cpp_properties.json包含路径以启用智能感知。如果您想使用其他版本的 OpenCV，只需将 g++ 参数的所有“341”部分替换为另一个版本，例如使用 OpenCV 3.3.1-llibopencv_calib3d331等。

编辑：我尝试编辑我的tasks.json并且launch.json它与 gdb 调试器一起使用。 tasks.json： https: //gist.github.com/agtbaskara/4a2ec9a3a9a963069e719c0477185321 launch.json：https://gist.github.com/agtbaskara/de04db8b6a31522dd1e62c43aa6e0f89 c_cpp_properties.json： https: //gist.github.com/agtbaskara/0eb773ac3085557baf7 BF20B031FB49E