openCV错误:对`cvLoadImage'Ubuntu的未定义引用

Question

我已经安装了OpenCV的库,但我仍然得到错误
$ G ++ -I/usr/include目录/ OpenCV的/ -L -lcxcore -lhighgui HELLO.CPP -o你好
/tmp/ccjjrbXr.o:在功能main': hello.cpp:(.text+0x2d): undefined reference tocvLoadImage"
collect2:LD返回1退出状态

当我检查库的路径时,我得到
$ pkg-config --libs opencv
-lml -lcvaux -lhighgui -lcv -lcxcore

我写了一个非常简单的程序来测试它:

enter code here

#include< cv.h>  
#include< highgui.h> /* required to use OpenCV's highgui */
#include< stdio.h>

int main() { 
    IplImage* img = 0;
    printf("Hello\n");
    img = cvLoadImage("lena.jpg", 0 );
}

我的安装有问题,但我真的无法搞清楚.任何指导将受到高度赞赏!谢谢

---

当我跑:

$ pkg-config --cflags --libs opencv
-I/usr/local/include/opencv -I/usr/local/include
/usr/local/lib/libopencv_calib3d.so /usr/local/lib/libopencv_contrib.so 
/usr/local/lib/libopencv_core.so /usr/local/lib/libopencv_features2d.so 
/usr/local/lib/libopencv_flann.so /usr/local/lib/libopencv_gpu.so 
/usr/local/lib/libopencv_highgui.so /usr/local/lib/libopencv_imgproc.so 
/usr/local/lib/libopencv_legacy.so /usr/local/lib/libopencv_ml.so 
/usr/local/lib/libopencv_nonfree.so /usr/local/lib/libopencv_objdetect.so 
/usr/local/lib/libopencv_photo.so /usr/local/lib/libopencv_stitching.so 
/usr/local/lib/libopencv_ts.so /usr/local/lib/libopencv_video.so 
/usr/local/lib/libopencv_videostab.so  

但是当我跑步时:

$ g++ 'pkg-config --cflags --libs opencv' display_image.cpp
g++: error: pkg-config --cflags --libs opencv: No such file or directory

似乎安装了OpenCV,但问题仍然存在.

Answer 1

你使用单引号'而不是反引号/反引号 `.这是更正的命令:

g++ hello.cpp -o hello `pkg-config --cflags --libs opencv` 

Answer 2

-lhighgui如果您正在使用highgui 库，最好链接到它