+2.3 Prepare third-part tools\r
+ cd /home/Ventoy-master/DOC/\r
+ tar xf musl-1.2.1.tar.gz\r
+ cd musl-1.2.1\r
+ ./configure && make install\r
+\r
+ tar xf /opt/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu.tar.xz -C /opt\r
+ tar xf /opt/aarch64--uclibc--stable-2020.08-1.tar.bz2 -C /opt\r
+\r
+2.4 Set PATH envrioment\r
+ export PATH=$PATH:/opt/gcc-linaro-7.4.1-2019.02-x86_64_aarch64-linux-gnu/bin:/opt/aarch64--uclibc--stable-2020.08-1/bin\r
+ better to add this line to /root/.bashrc and relogin as root\r
+\r