Rust Cross-Compilation

Purpose

Guide agents through Rust cross-compilation: adding rustup targets, using cross for hermetic Docker-based cross-builds, cargo-zigbuild for zero-setup cross-compilation, .cargo/config.toml configuration, and embedded bare-metal targets.

Triggers

• "How do I cross-compile Rust for ARM/aarch64?"
• "How do I build a Rust binary for a different OS?"
• "How do I use the cross tool for Rust cross-compilation?"
• "How do I build Rust for embedded (no_std) targets?"
• "How do I use cargo-zigbuild?"
• "My cross-compiled Rust binary won't run on the target"

Workflow

1. Add a rustup target