Created attachment 195878 [details]
2018 Update 5 includes "ARMv8 support" among other things in the release notes, so enable building for aarch64.
Passes testport on cross-build.
Thanks for your report! I'll be able to start working on it within a week or two.
A commit references this bug:
Date: Mon Aug 20 10:28:41 UTC 2018
New revision: 477645
Update to 2018.5 and enable build on aarch64
(dependent ports' revisions NOT bumped as that new version should be binary
compatible with previous version 2018.2)
Submitted by: Charlie Li <firstname.lastname@example.org>