How to use cross compile

1. Add target aarch64-unknown-linux-musl

   rustup target add aarch64-unknown-linux-musl

2. Download a musl cross-compiler

   wget https://musl.cc/aarch64-linux-musl-cross.tgz

3. Extract it

   tar xvzf aarch64-linux-musl-cross.tgz

4. Add it to your path -- this must be done every time you start a new shell

   export PATH=$(pwd)/aarch64-linux-musl-cross/bin:$PATH

5. Build the project

CFLAGS_aarch64_unknown_linux_musl=-mno-outline-atomics \
CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=aarch64-linux-musl-gcc \
cargo build \
--target aarch64-unknown-linux-musl