../obstacle/.libs/libObstacle.a(PyramidSceneNodeGenerator.o): In function `PyramidSceneNodeGenerator::getNextNode(float, float, bool)':
PyramidSceneNodeGenerator.cxx:(.text+0x6a8): undefined reference to `TriWallSceneNode::TriWallSceneNode(float const*, float const*, float const*, float, float, bool)'
../obstacle/.libs/libObstacle.a(MeshSceneNodeGenerator.o): In function `MeshSceneNodeGenerator::getNextNode(bool)':
MeshSceneNodeGenerator.cxx:(.text+0x1208): undefined reference to `MeshFragSceneNode::MeshFragSceneNode(int, MeshFace const**)'
../obstacle/.libs/libObstacle.a(MeshSceneNodeGenerator.o): In function `MeshSceneNodeGenerator::setupOccluders()':
MeshSceneNodeGenerator.cxx:(.text+0x17e0): undefined reference to `OccluderSceneNode::OccluderSceneNode(MeshFace const*)'