問題描述
我在 ubuntu 12.04 中編譯并安裝了 openCV 2.4.2.在 /usr/local/include 下，我可以看到目錄 /usr/local/opencv 和 /usr/local/opencv2.
I compiled and installed openCV 2.4.2 in ubuntu 12.04. Under /usr/local/include I can see the directories /usr/local/opencv and /usr/local/opencv2.
這是我寫的代碼:
#include <cv.h>
#include <highgui.h>
#include <iostream>
using namespace cv;
using namespace std;
int main(int argc,char **argv)
{
Mat image;
image = imread(argv[1],1);
if(argc != 2 || !image.data)
{
cout << "No image data
";
return -1;
}
namedWindow("Display Image",CV_WINDOW_AUTOSIZE);
imshow("Display Image",image);
waitKey(0);
return 0;
}
我使用這個命令行編譯它:
I compiled it using this command line:
g++ DisplayImage.cpp -o DisplayImage `pkg-config opencv --cflags --libs`
沒有編譯時錯誤，但是當我嘗試使用 /DisplayImage code.png 運行生成的二進制文件時，我收到以下錯誤消息:
There were no compile time errors, however when I try to run the resulting binary with /DisplayImage code.png I get the following error message:
./DisplayImage: error while loading shared libraries: libopencv_core.so.2.4: cannot open shared object file: No such file or directory
推薦答案
您沒有將共享庫放在加載程序可以找到的位置.查看 /usr/local/opencv 和 /usr/local/opencv2 文件夾，看看它們是否包含任何共享庫(以 lib<開頭的文件)/code> 并且通常以 .so 結尾).找到它們后，創建一個名為 /etc/ld.so.conf.d/opencv.conf 的文件，并將存儲庫的文件夾的路徑寫入其中，每行一個.
You haven't put the shared library in a location where the loader can find it. look inside the /usr/local/opencv and /usr/local/opencv2 folders and see if either of them contains any shared libraries (files beginning in lib and usually ending in .so). when you find them, create a file called /etc/ld.so.conf.d/opencv.conf and write to it the paths to the folders where the libraries are stored, one per line.
例如，如果庫存儲在 /usr/local/opencv/libopencv_core.so.2.4 下，那么我會將其寫入我的 opencv.conf 文件:
for example, if the libraries were stored under /usr/local/opencv/libopencv_core.so.2.4 then I would write this to my opencv.conf file:
/usr/local/opencv/
然后運行
sudo ldconfig -v
如果找不到庫，請嘗試運行
If you can't find the libraries, try running
sudo updatedb && locate libopencv_core.so.2.4
在一個外殼中.如果您在編譯 OpenCV 后重新啟動，則不需要運行 updatedb.
in a shell. You don't need to run updatedb if you've rebooted since compiling OpenCV.
參考文獻:
關于 Linux 上的共享庫:http://www.eyrie.org/~eagle/notes/rpath.html
About shared libraries on Linux: http://www.eyrie.org/~eagle/notes/rpath.html
關于添加 OpenCV 共享庫:http://opencv.willowgarage.com/wiki/InstallGuide_Linux
About adding the OpenCV shared libraries: http://opencv.willowgarage.com/wiki/InstallGuide_Linux
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