New version available, v1.8.4.7. I've also successfully compiled adasockets on my AMD64, so could you please put the newest version in portage and also add a ~amd64 flag to it?
In the tree and updated to work with new style gnat compilers and gnat.eclass. Please test.. George
The ebuild for 1.8.4.7 seems to work perfect for me on x86.