I have verified that this package works for ppc64.
Please add the ~ppc64 KEYWORDS to media-libs/libgd-2.0.23.
my USE Flag is "gtk2 altivec ppc64 -gnome cjk jpeg gif png tiff truetype".
hmmm did media-libs/libgd drop off the face of the earth?
o gd! duh!
stick a fork in it