install aarch gcc/g++ (option)
sudo apt install gcc-aarch64-linux-gnu
sudo apt install g++-aarch64-linux-gnu
install target host rust standard library
rustup target add aarch64-unknown-linux-gnu
config target linker, edit ~/.cargo/config, append below
[target.aarch64-unknown-linux-gnu]
linker="/usr/bin/aarch64-linux-gnu-gcc"
run cargo build with --target parameter
cargo build --target=aarch64-unknown-linux-gnu