UBUNTU12.04 请教到底是那个目录下缺少来文件，谢谢！
交叉编译环境：

命令：arm-linux-gcc -lpthread -lrt  cam2.cpp -o cam `pkg-config --libs --cflags opencv` 

错误：

/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_core.so, needed by /mydrive/OpencvInstall/lib/libopencv_calib3d.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_imgproc.so, needed by /mydrive/OpencvInstall/lib/libopencv_calib3d.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_flann.so, needed by /mydrive/OpencvInstall/lib/libopencv_calib3d.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_highgui.so, needed by /mydrive/OpencvInstall/lib/libopencv_calib3d.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_features2d.so, needed by /mydrive/OpencvInstall/lib/libopencv_calib3d.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_calib3d.so, needed by /mydrive/OpencvInstall/lib/libopencv_contrib.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_ml.so, needed by /mydrive/OpencvInstall/lib/libopencv_contrib.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_video.so, needed by /mydrive/OpencvInstall/lib/libopencv_contrib.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_objdetect.so, needed by /mydrive/OpencvInstall/lib/libopencv_contrib.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_nonfree.so, needed by /mydrive/OpencvInstall/lib/libopencv_gpu.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_photo.so, needed by /mydrive/OpencvInstall/lib/libopencv_gpu.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_legacy.so, needed by /mydrive/OpencvInstall/lib/libopencv_gpu.so, not found (try using -rpath or -rpath-link)
/mydrive/arm-linux-gcc/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: ../../lib/libopencv_gpu.so, needed by /mydrive/OpencvInstall/lib/libopencv_stitching.so, not found (try using -rpath or -rpath-link)
qust@qust-Rev-1-0:~$ 

你这是opencv的库一个都没有？     编译的时候又加？

pkg-config --libs --cflags opencv 这个的输出是啥？   是编译需要的么？  这里提示的就是这个命令需要的那些应该都没找到...   你手动看下都在哪儿呢  自己加个-L目录 试试