Created attachment 494074 [details] aix-stage2.log.xz Profile is said to be invalid, but points to /usr/portage/profiles/prefix/aix/7.1.0.0.
Added the aix/7.2.0.0/ppc profile now: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7f764204302381e079c83161839e72e492b2dda9 Maybe because of the originally missing profile, seems like it wants to bootstrap ppc64 to some degree - which is not supported yet ('ve just done 32bit for now), sorry! However, you're welcome to try porting to 64bit if you need - but be warned, there's a bunch of pitfalls with aix...
we had to drop support for AIX platform