Cross compile Rust for Raspberry Pi using Docker container

README.md

This is a simple Docker environment for cross compiling Rust for the Raspberry Pi.

Usage

Build image:

docker build -t raspios-bullseye-rust-cross-compile .

Go to the root of your source code on your host system and execute:

docker run -v "$PWD:/home/local/src" -it raspios-bullseye-rust-cross-compile /bin/bash

This will mount the source directory in the ~/src directory in the container.

In the container execute:

cd src
cargo build --release --target armv7-unknown-linux-gnueabihf

config

[target.armv7-unknown-linux-gnueabihf]
linker = "arm-linux-gnueabihf-gcc"

Dockerfile

FROM ubuntu:20.04

RUN apt-get update && apt-get install -y \
	build-essential \
  gcc-arm-linux-gnueabihf \
	curl

# Switch user
RUN useradd -ms /bin/bash local
USER local
WORKDIR /home/local

# Download rust
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | bash -s -- -y

# Add cargo and rust to path
RUN echo 'source $HOME/.cargo/env' >> $HOME/.bashrc
ENV PATH="/home/local/.cargo/bin:${PATH}"

# Setup cross compiling
RUN rustup target add armv7-unknown-linux-gnueabihf
COPY config $HOME/.cargo/config