KDevelop 添加OpenCV出错。

桃扇骨 2022-12-27 01:20 225阅读 0赞

出现的错误如图所示。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0NDQ3J1bm5lcg_size_16_color_FFFFFF_t_70]

/usr/local/include/opencv2/core/mat.inl.hpp:886: undefined reference to `cv::Mat::deallocate()'
    CMakeFiles/destest.dir/feature_extraction.cpp.o: In function `cv::Mat::~Mat()':
    /usr/local/include/opencv2/core/mat.inl.hpp:774: undefined reference to `cv::fastFree(void*)'
    CMakeFiles/destest.dir/feature_extraction.cpp.o: In function `cv::String::String(char const*)':
    /usr/local/include/opencv2/core/cvstd.hpp:602: undefined reference to `cv::String::allocate(unsigned long)'
    CMakeFiles/destest.dir/feature_extraction.cpp.o: In function `main':
    /home/philtell/projects/destest/feature_extraction.cpp:16: undefined reference to `cv::imread(cv::String const&, int)'
    CMakeFiles/destest.dir/feature_extraction.cpp.o: In function `cv::String::~String()':
    /usr/local/include/opencv2/core/cvstd.hpp:648: undefined reference to `cv::String::deallocate()'
    CMakeFiles/destest.dir/feature_extraction.cpp.o: In function `main':
    /usr/local/include/opencv2/core/cvstd.hpp:648: undefined reference to `cv::String::deallocate()'

分析之后，发现没有连接成功。

**feature\_extraction.cpp**

#include <iostream>
    #include <opencv2/core/core.hpp>
    #include <opencv2/features2d/features2d.hpp>
    #include <opencv2/highgui/highgui.hpp>
    
    using namespace std;
    using namespace cv;
    
    int main ( int argc, char** argv )
    {
        
        if ( argc != 3 )
        {
        
            cout<<"usage: feature_extraction img1 img2"<<endl;
            return 1;
        }
         Mat img0 = imread("1.png");
        //-- 读取图像
        //cv::Mat img_1 ;//= cv::imread ( "/home/philtell/gaoxiang12-slambook/ch7/1.png", CV_LOAD_IMAGE_COLOR );
        //Mat img_2 = imread ( "/home/philtell/gaoxiang12-slambook/ch7/2.png", CV_LOAD_IMAGE_COLOR );
        
      return 0;
    }

**CMakeLists.txt**

cmake_minimum_required(VERSION 2.6)
    project(destest)
    
    set( CMAKE_BUILD_TYPE "DEBUG" )
    set( CMAKE_CXX_FLAGS "-std=c++11 -O3" )
    # OpenCV
    find_package( OpenCV REQUIRED )
    
    add_executable(destest feature_extraction.cpp)
    
    install(TARGETS destest RUNTIME DESTINATION bin)

只需要在`CMakeLists.txt`上面加上链接 就可以了。

add_executable(destest feature_extraction.cpp)
    target_link_libraries(destest ${
        OpenCV_LIBS}

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0NDQ3J1bm5lcg_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0NDQ3J1bm5lcg_size_16_color_FFFFFF_t_70]: /images/20221120/186dadc002c34c25988f8543781aea3b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0NDQ3J1bm5lcg_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20201206204426553.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0NDQ3J1bm5lcg==,size_16,color_FFFFFF,t_70