g++  -L/usr/local/lib -losg -losgDB -losgViewer ../../Examples/Picking/PickingMain.cpp -o picking
../../Examples/Picking/PickingMain.cpp: In member function 'bool PickHandler::pick(double, double, osgViewer::Viewer*)':
../../Examples/Picking/PickingMain.cpp:186: error: invalid initialization of non-const reference of type 'osg::NodePath&' from a temporary of type 'osg::NodePath'
make: *** [picking] Error 1
