For gdal to support GML language it needs to be compiled with xerces-c. An easy hack is to add to DEPEND dev-libs/xerces-c and then to pkg_cong --with-xerces. It works fine. Of cource some USE flag like gml would be much more appropriate. I'm new to ebuilds so no ebuild attached. Reproducible: Always Steps to Reproduce: 1. 2. 3.
This is fixed, but hdf5 support is still on hold for a bit.