respawner, JagDoc, would you share settings? It's interesting and can be useful.
JJAR, fzs600 we try to find simulator or another tool for compile application.

Thank you very much for your enthusiasm!

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

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

On my Odroid-XU4 i get this error:
../../projects/rake.boincfast.ru_rakesearch/rakesearch: error while loading shared libraries: libboinc_api.so.7: cannot open shared object file: No such file or directory
http://rake.boincfast.ru/rakesearch/results.php?hostid=1797

I have rebuilt ARM apps and now this lib is linked statically. Please download new app, it should work now.