On Sun, May 09, 2021 at 07:54:42AM +0000, Guillaume Le Vaillant wrote:
> The machine I used to build opencv (successfully) also has an AMD
> processor (AMD Ryzen 9 5950X).

I saw some reports of success with Ryzen chips; maybe it's a problem
with AMD Epyc, which will be more typical for build farms and
high-performance workstations.