cross — zero-fuss cross-compilation

Wraps Docker containers with the right linkers/sysroots so you don't deal with them.

When to use

• Static musl binary (deploy to Alpine / scratch container): cross build --release --target x86_64-unknown-linux-musl
• aarch64 (Raspberry Pi, ARM server): cross build --release --target aarch64-unknown-linux-gnu
• Windows from Linux/Mac: cross build --release --target x86_64-pc-windows-gnu
• Test on a non-native target: cross test --target <triple>
• Custom toolchain: Cross.toml at repo root to pin image / env vars

Prerequisites

• cross (cargo install cross --git https://github.com/cross-rs/cross)
• Docker (or Podman with CROSS_CONTAINER_ENGINE=podman)
• The target installed once: rustup target add <triple> (cross handles the rest)