I want to thank here bjbdragon's contribution without which I would not even be aware of
sse2neon's existence... I also want to thank Tanuki for his contribution to pre-built libraries support.
Today, I made Linux aarch64 (ARM v8 only) builds officially supported, with updated
pre-built libraries source scripts allowing to rebuild those libraries on (hopefully) any x86_64
and aarch64 Linux systems.
The
Cool VL Viewer sources are now officially compatible with aarch64 Linux systems.

I will soon open a FAQ topic about how to use the Cool VL Viewer on ARM64
SBCs (I am myself still learning about one of them, the Orange Pi 5 Plus).
EDIT: see the new
Linux ARM64 install howto.