Project runs fine on my (32-bit) Asus Tinker Board, but even though I use

<cc_config> <options> <alt_platform>arm-unknown-linux-gnueabihf</alt_platform> </options>

on my Raspberry Pi 4B and Odroid N2+, the code searches for libstdc++.so.6 on a specific 32-bit path -which does not exists on those machines, being 64-bit.

looks to be solved using

sudo dpkg --add-architecture armhf
sudo apt update
sudo apt install libstdc++6:armhf libgomp1:armhf libboinc7:armhf
sudo reboot