C++ OpenCV:“；libopencv_core.so.2.3:无法打开共享对象文件：没有这样的文件或目录；

我刚刚在我的Debian机器上安装了OpenCV，我遇到了一些问题。我遵循维基上的安装指南。尝试编译这些示例似乎是一次成功的编译，但尝试运行这些示例最终会引发错误：

fagg@hubble:~/src/OpenCV-2.3.1/samples/cpp$ g++ -Wall em.cpp
-lopencv_core -lopencv_imgproc -lopencv_calib3d -lopencv_video
-lopencv_features2d -lopencv_ml -lopencv_highgui -lopencv_objdetect
-lopencv_contrib -lopencv_legacy
fagg@hubble:~/src/OpenCV-2.3.1/samples/cpp$ ./a.out
./a.out: error while loading shared libraries: libopencv_core.so.2.3:
cannot open shared object file: No such file or directory
fagg@hubble:~/src/OpenCV-2.3.1/samples/cpp$ pkg-config opencv
--libs-L/usr/local/lib -lopencv_core -lopencv_imgproc -lopencv_highgui
-lopencv_ml -lopencv_video -lopencv_features2d -lopencv_calib3d
-lopencv_objdetect -lopencv_contrib -lopencv_legacy -lopencv_flann
fagg@hubble:~/src/OpenCV-2.3.1/samples/cpp$

但即使这样做也不行：

fagg@hubble:~/src/OpenCV-2.3.1/samples/cpp$ g++ -Wall em.cpp
`pkg-config opencv --cflags --libs`
fagg@hubble:~/src/OpenCV-2.3.1/samples/cpp$ ./a.out
./a.out: error while loading shared libraries: libopencv_core.so.2.3:
cannot open shared object file: No such file or directory
fagg@hubble:~/src/OpenCV-2.3.1/samples/cpp$

我认为链接有问题，但我不太确定到底发生了什么。这是一个全新的OpenCV安装-我以前从未在这台机器上安装过它。有人有什么想法吗

sudo ldconfig

---

由anon.coward建议

从您的

pkg config

输出中，该库似乎位于

/usr/local/lib

中。当您尝试

LD\u LIBRARY\u PATH=$LD\u LIBRARY\u PATH:/usr/local/lib./a.out

时会发生什么情况！当然我运行了一个ldconfig，并修复了它。这很奇怪，因为当我昨天试的时候，它不起作用。非常感谢！