rust-riscv-cross.dockerfile

FROM ghcr.io/commonwarexyz/monorepo/riscv-unknown-elf-toolchain@sha256:09897c042df2487352e499a5ec121e4ad8ea4828d691aa2e6b9435e5ca59f25b AS rv-bare
FROM ubuntu:22.04

ARG ARCH

ENV SHELL=/bin/bash
ENV DEBIAN_FRONTEND=noninteractive

# Install core dependencies
RUN apt-get update && apt-get install --assume-yes --no-install-recommends \
  ca-certificates \
  build-essential \
  autoconf \
  automake \
  autotools-dev \
  git \
  curl \
  make \
  cmake \
  xxd \
  g++-riscv64-linux-gnu \
  libc6-dev-riscv64-cross \
  binutils-riscv64-linux-gnu \
  llvm \
  clang

# Copy the RISC-V GNU toolchain from the previous stage
COPY --from=rv-bare /opt/riscv /opt/riscv

# Install Rustup and Rust
ENV RUST_VERSION=nightly
ENV PATH="/root/.cargo/bin:${PATH}"
RUN curl https://sh.rustup.rs -sSf | bash -s -- -y --default-toolchain ${RUST_VERSION} --component rust-src

# Add the RV toolchain to the path
ENV PATH="/opt/riscv/bin:${PATH}"

# Set up the env vars to instruct rustc to use the correct compiler and linker
ENV CC_riscv32_unknown_none_elf=riscv64-linux-gnu-gcc \
  CC_riscv64_unknown_none_elf=riscv64-linux-gnu-gcc \
  CXX_riscv32_unknown_none_elf=riscv64-linux-gnu-g++ \
  CXX_riscv64_unknown_none_elf=riscv64-linux-gnu-g++ \
  CARGO_TARGET_RISCV32_UNKNOWN_NONE_ELF_LINKER=riscv64-linux-gnu-gcc \
  CARGO_TARGET_RISCV64_UNKNOWN_NONE_ELF_LINKER=riscv64-linux-gnu-gcc \
  RUSTFLAGS="-Clink-arg=-e_start" \
  CARGO_BUILD_TARGET="$ARCH-unknown-none-elf" \
  RUSTUP_TOOLCHAIN=${RUST_VERSION}