/usr/lib/ is in libopenscenegraph-dev 3.2.0~rc1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/pkgconfig/
/usr/lib/libosgTerrain.so
/usr/lib/libosgQt.so
/usr/lib/pkgconfig/openscenegraph-osgFX.pc
/usr/lib/pkgconfig/openscenegraph-osgGA.pc
/usr/lib/pkgconfig/openscenegraph-osgWidget.pc
/usr/lib/pkgconfig/openscenegraph-osgUtil.pc
/usr/lib/pkgconfig/openscenegraph-osgText.pc
/usr/lib/pkgconfig/openscenegraph-osg.pc
/usr/lib/pkgconfig/openscenegraph-osgTerrain.pc
/usr/lib/pkgconfig/openscenegraph-osgVolume.pc
/usr/lib/pkgconfig/openscenegraph.pc
/usr/lib/pkgconfig/openscenegraph-osgAnimation.pc
/usr/lib/pkgconfig/openscenegraph-osgSim.pc
/usr/lib/pkgconfig/openscenegraph-osgDB.pc
/usr/lib/pkgconfig/openscenegraph-osgManipulator.pc
/usr/lib/pkgconfig/openscenegraph-osgViewer.pc
/usr/lib/pkgconfig/openscenegraph-osgParticle.pc
/usr/lib/pkgconfig/openscenegraph-osgShadow.pc
/usr/lib/pkgconfig/openscenegraph-osgQt.pc
/usr/lib/libosgAnimation.so
/usr/lib/libosgSim.so
/usr/lib/libosgWidget.so
/usr/lib/libosgManipulator.so
/usr/lib/libosgGA.so
/usr/lib/libosgDB.so
/usr/lib/libosgParticle.so
/usr/lib/libosgText.so
/usr/lib/libosg.so
/usr/lib/libosgVolume.so
/usr/lib/libosgFX.so
/usr/lib/libosgViewer.so
/usr/lib/libosgPresentation.so
/usr/lib/libosgShadow.so
/usr/lib/libosgUtil.so