pdv-1.5.1-r2.ebuild has IUSE="nomotif" and DEPEND="!nomotif? ( ... )". It should use the "motif" global flag instead.
use nomotif && myconf="--without-x" - looks like USE=X is a better choice here? Anyway yeah, nomotif must go.
> use nomotif && myconf="--without-x" - looks like USE=X is a better choice here? I agree.
Fixed in CVS.