linux ld.so.conf path (CentOS 5.4, RedHat)

I'm linking OpenCV into my Qt project. More samples on that later. Runtime produced this error:

"Path_to_source: error while loading shared libraries: libcv.so.2.0: cannot open shared object file: No such file or directory"

The path to the OpenCV dynamic link libraries (.so files) were not in the link library path.

Found a clue here here and here.

solution:

su root
cd /etc/ld.so.conf.d
cat > opencv-10.conf
/usr/local/lib
^c
/sbin/ldconfig -v