VS Code 无法打开源文件“opencv2/opencv.hpp”

Question

I am trying to include OpenCV library for my project. But VS Code keeps showing me the error:

#include errors detected. Please update your includePath. Squiggles are disabled for this translation unit (/Users/erenerogullari/Desktop/School/DIP/dip02/main.cpp). 
cannot open the source file 'opencv2/opencv.hpp'.

even though I added it to my include path in 'settings.json'.

Here is my 'main.cpp' file:

#include <opencv2/opencv.hpp> // Error is shown here
#include <stdexcept>
#include <iostream>
#include <string>
#include <sstream>

using namespace std;
using namespace cv;

int main(int argc, char **argv){...}

And my 'setting.json' for C/C++ extension in VS Code:

{
    "editor.formatOnSave": true,
    "kite.showWelcomeNotificationOnStartup": false,
    "C_Cpp.default.includePath": ["${default}", "/Users/eren/opencv-4.5.0/include/opencv2"]
}

I built the project using CMake Tools for VS Code. Here is my 'CMakeLists.txt' file if it's helpful in any way:

cmake_minimum_required(VERSION 3.1)

project( dip2 LANGUAGES CXX )

find_package( OpenCV REQUIRED )


add_library(code 
    Dip2.cpp
    Dip2.h
)

set_target_properties(code PROPERTIES
    CXX_STANDARD 11
    CXX_STANDARD_REQUIRED YES
    CXX_EXTENSIONS NO
)


target_link_libraries(code
    PUBLIC
        ${OpenCV_LIBS}
)

target_include_directories(code PUBLIC ${OpenCV_INCLUDE_DIRS})


add_executable(main 
    main.cpp 
)

set_target_properties(main PROPERTIES
    CXX_STANDARD 11
    CXX_STANDARD_REQUIRED YES
    CXX_EXTENSIONS NO
)

target_link_libraries(main 
    PRIVATE
        code
)

target_include_directories(main PUBLIC ${OpenCV_INCLUDE_DIRS})


add_executable(unit_test 
    unit_test.cpp 
)

set_target_properties(unit_test PROPERTIES
    CXX_STANDARD 11
    CXX_STANDARD_REQUIRED YES
    CXX_EXTENSIONS NO
)

target_link_libraries(unit_test 
    PRIVATE
        code
)

target_include_directories(unit_test PUBLIC ${OpenCV_INCLUDE_DIRS})

I am using Visual Studio Code 1.51.1 on macOS 11.0.1. Thank you in advance!

Answer 1

I was able to solve it by reinstalling OpenCV with homebrew and adding the path to included paths in C/C++ extension:

{
"editor.formatOnSave": true,
"kite.showWelcomeNotificationOnStartup": false,
"C_Cpp.default.includePath": [
    "${default}",
    "/usr/local/Cellar/opencv/4.5.0_5/include/opencv4"
]

}