I'm using a <a href="https://github.com/OOHehir/build-riscv/blob/main/poky-qt-visionfive2.yml" target="_blank" rel="noopener">KAS setup</a> &amp; added the following line:<br /><br />TUNE_CCARGS = "-march=rv64imafdc_zicsr_zifencei_zihintpause"<br /><br />It seems to have resulted in a successful build of qtbase (following rebuilds of gcc etc)<br /><br />I imagine there's a more correct way to achieve this however.