OpenCV CLion (Cmake) linking issue - cmake reports

2019-07-17 06:50发布

问题:

I can't get my CLion to build the project because of a weird error upon saving my CMakeLists and/or building the project: Error:Found package configuration file: /usr/share/opencv/OpenCVConfig.cmake but it set OpenCV_FOUND to FALSE so package "OpenCV" is considered to be NOT FOUND.

Source file:

#include <stdio.h>
#include <opencv2/opencv.hpp>

using namespace cv;

int main(int argc, char** argv )
{
    Mat image;
    image = imread( "lena.jpg", 1 );
    if ( !image.data )
    {
        printf("No image data \n");
        return -1;
    }
    namedWindow("Display Image", WINDOW_AUTOSIZE );
    imshow("Display Image", image);
    waitKey(0);
    return 0;
}

My CMakeLists.txt: cmake_minimum_required(VERSION 3.3) project(Test) find_package( OpenCV REQUIRED ) add_executable( Test main.cpp ) target_link_libraries( Test ${OpenCV_LIBS} )

$ pkg-config --cflags opencv -I/usr/include/opencv

$ pkg-config --libs opencv -L/lib64 -lopencv_calib3d -lopencv_contrib -lopencv_core -lopencv_features2d -lopencv_flann -lopencv_gpu -lopencv_highgui -lopencv_imgproc -lopencv_legacy -lopencv_ml -lopencv_nonfree -lopencv_objdetect -lopencv_ocl -lopencv_photo -lopencv_stitching -lopencv_superres -lopencv_ts -lopencv_video -lopencv_videostab -ltbb -lGL -lGLU -lrt -lpthread -lm -ldl

The fact is when I manually cmake . & make (with all the same CMakeLists file) my project from console it works just fine with no errors.

OpenCV version: 2.4.11-1 (arch linux) CLion: latest.

OpenCVConfig.cmake difference compared to git version: https:// www.diffchecker. com/vtmmiu1w

Manual build output:

[dobegor@dobegor-pc Test]$ cmake .
-- The C compiler identification is GNU 5.2.0
-- The CXX compiler identification is GNU 5.2.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/dobegor/ClionProjects/Test
[dobegor@dobegor-pc Test]$ make 
Scanning dependencies of target Test
[ 50%] Building CXX object CMakeFiles/Test.dir/main.cpp.o
[100%] Linking CXX executable Test
[100%] Built target Test

回答1:

I don't know what really happened, but I've added a line that manually sets the OpenCV_FOUND to 1 into OpenCVConfig.cmake and everything works fine:

set(OpenCV_FOUND 1)