This is a docker image that contains an environment for cross-compiling Rust projects to the following platforms:

• aarch64-unknown-linux-gnu
• x86_64-unknown-linux-gnu
• powerpc64le-unknown-linux-gnu
• x86_64-apple-darwin
• aarch64-apple-darwin

To use it:

docker run --mount type=bind,source="$(pwd)",target=/mnt ghcr.io/martint/rustxc:latest \
    cargo build \
      --target powerpc64le-unknown-linux-gnu \
      --target x86_64-unknown-linux-gnu \
      --target aarch64-unknown-linux-gnu \
      --target x86_64-apple-darwin \
      --target aarch64-apple-darwin

To build the image locally:

docker build . -t rustxc

Resources

• https://github.com/tpoechtrager/osxcross
• https://dev.to/mbround18/rust-cross-compiling-from-linux-to-mac-on-github-actions-2mj8
• https://github.com/mbround18/setup-osxcross/blob/main/action.yml
• https://burgers.io/cross-compile-rust-from-arm-to-x86-64
• https://stackoverflow.com/questions/41761485/how-to-cross-compile-from-mac-to-linux
• https://github.com/messense/homebrew-macos-cross-toolchains