got avx2 and sse4 as well. Will re-compile also including additional flags reported in the messages above and let you know hows test will be going.
$ ./bn -c ../etc/libbitcoin/libbitcoin.conf -d
Intrinsics...
arm..... platform:0.
intel... platform:1.
avx512.. platform:0 compiled:0.
avx2.... platform:1 compiled:0.
sse41... platform:1 compiled:0.
shani... platform:0 compiled:0.
neon.... platform:0 compiled:0.
