At this moment fails on ARM Cortex-A53 and Cortex-A55, works on RISC-V 64, recent Macs and PCs.
wget https://downloads.xiph.org/releases/opus/opus-1.5.1.tar.gz tar -xf opus-1.5.1.tar.gz cd opus-1.5.1 sudo apt install autoconf automake libtool gcc make ./configure sudo make install
This version brings non-marginal improvements for spoken content at low bitrate.
I hadn’t yet tried to compile on on ARM Cortex-A53 and Cortex-A55 and the problems didn’t take long to appear, so I preferred to avoid wasting others’ time. I apologize for omitting it.
Since Opus is know to work on many ARM environments, the issue is most likely build-related. What build system (and exact command) are you using? Also, make sure you’re using the latest main (and not 1.5.1) since there’s been many build fixes there already.