I have verified that this package works for ppc64. Please add the ~ppc64 KEYWORDS to net-print/foomatic-3.0.0.20031018. my USE Flag is "gtk2 altivec ppc64 -gnome cjk jpeg gif png tiff truetype". This package depends... (Please add the ~ppc64 KEYWORDS) net-print/foomatic-db-20031231 net-print/foomatic-db-engine-3.0.0.20031018 net-print/foomatic-filters-3.0.0.20031018
Thanks Yuta
stick a fork in it