Step-by-Step Guide: Installing OpenCV C++ and Setting It Up in Visual Studio Code with CMake

What people said

Recommends Kyusv · 2023-01 · Stack Overflow · on “VSCode CMake Configuration Fail on Windows10”

I am a complete beginner in this stuff but i just had this issue and was able to solve it. I am not sure which one of the steps exactly helped me but here is everything i did that might have affected it: Uninstalled and reinstalled CMake choosing "Add CMake to the system PATH for all users" Installed Visual Studio 2022 c++ tool for windows Restarted my pc Added paths to opencv/build/x64/vc15/bin and lib and to the CMake's bin Created a cmakelist.txt by hand and copied contents from this video [this video] Reinstalled CMake extensions and downloaded c/c++ compile run extension(even though i already have code runner installed) With the DIY file crated in step 5 tried ctrl+shift+p and chose CMake co

Cites vivek uniyal · 2021-08 · Stack Overflow · on “Can not build my OpenCV project due to undefined references”

#include<stdio.h> #include<opencv2/opencv.hpp> using namespace cv; int main(int argc, char** argv) { Mat image; image = imread("D:/pic.jpg"); if(!image.data) { printf("No image data found\n"); return(-1); } namedWindow("Display image",WINDOW_AUTOSIZE); imshow("DIsplay Image",image); waitKey(0); return 0; } I am running this code on a Windows machine in vscode, with all my opencv and cmake files path in system environment path variable.I have set up my vscode for openCV from here [this video] . [main] Building folder: test [build] Starting build [proc] Executing command: "C:\Program Files\CMake\bin\cmake.EXE" --build d:/OpenCV_projects/test/build --config Debug --target all -j 14 -- [build] Consol

Cites C4C · 2021-11 · Stack Overflow · on “Cmake build problem with opencv (error LNK2019) in vscode”

So I've been trying to get started on opencv c++. I followed a tutorial on how to set it up, link here [this video] . I wrote a simple opencv script for an image display. I built the project after that and I got this error: [build] main.cpp.obj : error LNK2019: unresolved external symbol "public: __cdecl cv::Mat::Mat(void)" (??0Mat@cv@@QEAA@XZ) referenced in function main [build] main.cpp.obj : error LNK2019: unresolved external symbol "public: __cdecl cv::Mat::~Mat(void)" (??1Mat@cv@@QEAA@XZ) referenced in function main [build] main.cpp.obj : error LNK2019: unresolved external symbol "public: class cv::Mat & __cdecl cv::Mat::operator=(class cv::Mat &&)" (??4Mat@cv@@QEAAAEAV01@$$QEAV01@@Z) refere

Cites CADSE · 2021-12 · Stack Overflow · on “How resolve the error find_package not providing in CMake”

I'm trying to learn OpenCV but for some reason I can't use the library, I'm using CMake but i don't know how to use and the code is cmake_minimum_required(VERSION 3.0.0) project(opencvtest VERSION 0.1.0) include(CTest) enable_testing() find_package( OpenCV REQUIRED ) include_directories( ${OpenCV_INCLUDE_DIRS} ) add_executable(opencvtest main.cpp) target_link_libraries( opencvtest ${OpenCV_LIBS} ) set(CPACK_PROJECT_NAME ${PROJECT_NAME}) set(CPACK_PROJECT_VERSION ${PROJECT_VERSION}) include(CPack) and always give the error [cmake] CMake Error at CMakeLists.txt:7 (find_package): [cmake] By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has [cmake] asked CMake to find a pack

Cites ankanb312 · 2022-05 · Stack Overflow · on “Undefined reference to cv functions when using OpenCV with CMake”

I am following a tutorial ( [this video] ) for using OpenCV through CMake and I am having the following errors when I try to build using mingw-w64. [build] Starting build [proc] Executing command: "C:\Program Files\CMake\bin\cmake.EXE" --build c:/Users/bnick/Desktop/opencvtest/build --config Debug --target all -j 8 -- [build] Consolidate compiler generated dependencies of target opencvtest [build] [ 50%] Linking CXX executable opencvtest.exe [build] CMakeFiles\opencvtest.dir/objects.a(main.cpp.obj): In function `main': [build] C:/Users/bnick/Desktop/opencvtest/main.cpp:8: undefined reference to `cv::Mat::Mat()' [build] C:/Users/bnick/Desktop/opencvtest/main.cpp:9: undefined reference to `cv::imre

Cites Chris Steffen · 2022-06 · Stack Overflow · on “Undefined reference when using OpenCV and CMake in VSCode”

Im trying to use OpenCV in VSCode and followed this videos instructions: [this video] Difference from the video is im using mingw compiler and im unable to get the msvc compiler (Not the issue though). main.cpp: #include <iostream> #include <opencv2/opencv.hpp> using namespace cv; int main() { std::cout << "aa" << std::endl; std::string img = "lenna.jpg"; Mat srcImage = imread(img); if (!srcImage.data) { return 1; } imshow("srcImage", srcImage); waitKey(0); return 0; } CMakeLists.txt: cmake_minimum_required(VERSION 3.0.0) project(OpenCV_Test VERSION 0.1.0) include(CTest) enable_testing() find_package(OpenCV REQUIRED) include_directories(${OpenCV_INCLUDE_DIRS}) add_executable(OpenCV_Test main.cpp)

Cites Crazy Engineer · 2023-06 · Stack Overflow · on “Setting up cmake with C++ and openCV: fatal error: opencv2/opencv.hpp: No such file or directory #include <opencv2/opencv.hpp>”

Ok, meanwhile I found a way to make it work. I originally followed this tutorial [this video] to set everything up. But upon running the script using the “play button” I encountered the error mentioned in the title and the description, even though the files were in the indicated location and all paths were correctly included. And I still cannot do it this way but there is another way and maybe there are more beginners like me who are not aware of this, which is why I want to share it. In Windows, press SHIFT+CRTL+P and type in “CMake” in the window that pops up and you will find the CMake: Build command. Click it and it will generate an executable file for you, which in my case was located in bui