qa-vdb reports that glfw, glfw, and libXinerama are not needed. media-libs/opensubdiv-3.4.4-r3::gentoo was built with the following: USE="openmp -cuda -examples -opencl -ptex -tbb -test -tutorials" VDB: detected possibly incorrect RDEPEND (media-libs/opensubdiv-3.4.4-r3) media-libs/glew:= < media-libs/glfw:= < x11-libs/libXinerama < It looks like they are only needed if USE=examples.