These ebuilds come from http://dma147.info/overlay/.
If you have some problems, go to the official site first.
openalpp : description. ( http://sourceforge.net/projects/alpp/ )
openscenegraph : Cross platform, object orientated threading library maintained by the OpenSceneGraph team. ( http://www.openscenegraph.org )
osgcal : cal3d to OpenSceneGraph adapter development file ( http://gna.org/projects/underware )
unittest++ : description. ( http://sourceforge.net/projects/unittest-cpp/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
If you have a problem : ycarus(-at-)zugaina.org