Created attachment 195077 [details]
Apparently there was x86 assembly there back in 2012:
The current version builds and works fine on aarch64.
A commit references this bug:
Date: Tue Oct 23 06:36:00 UTC 2018
New revision: 482810
Enable build on all archs. Apparently the x86-specific code is long gone.
Submitted by: Greg V <greg at unrelenting.technology>
Approved by: maintainer timeout (> 3 months)