我已经安装了openCV库,但我仍然收到错误
$ g ++ -I / usr / include / opencv / -L -lcxcore -lhighgui hello.cpp -o hello
/tmp/ccjjrbXr.o:在函数main':
hello.cpp:(.text+0x2d): undefined reference to
cvLoadImage'中
collect2:ld返回1退出状态
当我检查图书馆的路径时,我得到了
$ 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! 感谢
当我跑步时:
$ 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
似乎已安装OpenCV,但问题仍然存在。
答案 0 :(得分:13)
您使用单引号'
代替backquotes/backticks `
。这是更正的命令:
g++ hello.cpp -o hello `pkg-config --cflags --libs opencv`
答案 1 :(得分:0)
如果你正在使用它,那么链接到highgui lib -lhighgui
是个好主意
答案 2 :(得分:0)
这个命令:
g++ 'pkg-config --cflags --libs opencv' display_image.cpp
与此不同:
g++ `pkg-config --cflags --libs opencv` display_image.cpp
因为'和'字符......
如果你不想弄乱这些字符,你可以使用
g++ $(pkg-config --cflags --libs opencv) display_image.cpp
更容易想象
答案 3 :(得分:-1)
尝试g ++ -g -o mypro progname.cpp pkg-config opencv --cflags --libs
或