Dockerfile

FROM ubuntu:18.04

ARG DEBIAN_FRONTEND=noninteractive
RUN apt update -y && apt upgrade -y

## Various dependencies
RUN apt-get install -y wget sudo cmake clang python zlib1g make git \
	ninja-build llvm libssl-dev pkg-config curl

## ESP-IDF dependencies
## https://docs.espressif.com/projects/esp-idf/en/latest/get-started/linux-setup.html
RUN sudo apt-get install -y git wget flex bison gperf python python-pip python-setuptools \
	python-serial python-click python-cryptography python-future python-pyparsing \
	python-pyelftools cmake ninja-build ccache libffi-dev libssl-dev 

## Build LLVM
## based on these build instructions
## http://quickhack.net/nom/blog/2019-05-14-build-rust-environment-for-esp32.html
ENV BUILD_ROOT $HOME/.xtensa
RUN mkdir -p "${BUILD_ROOT}"
WORKDIR ${BUILD_ROOT}
RUN git clone https://github.com/espressif/llvm-project.git --depth 1
ENV LLVM_BUILD ${BUILD_ROOT}/llvm_build
RUN mkdir -p "${LLVM_BUILD}"
WORKDIR ${LLVM_BUILD}
ENV CC clang
ENV CXX clang++
RUN cmake ../llvm-project/llvm -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="Xtensa" -DLLVM_TARGETS_TO_BUILD="X86" -DCMAKE_BUILD_TYPE=Release -G "Ninja"
RUN cmake --build . 

## Build Rust
WORKDIR /
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup.sh && \
	chmod +x ./rustup.sh && \
	./rustup.sh  --default-toolchain nightly --profile default -y && \ 
	rm rustup.sh

## Build LLVM
WORKDIR ${BUILD_ROOT}
RUN git clone https://github.com/MabezDev/rust-xtensa.git --depth 1
WORKDIR ${BUILD_ROOT}/rust-xtensa
ENV RUST_BUILD ${BUILD_ROOT}/rust_build
RUN mkdir -p ${RUST_BUILD}
RUN ./configure --llvm-root="${LLVM_BUILD}" --prefix="${RUST_BUILD}"

## Build the compiler
RUN python ./x.py build
RUN python ./x.py install
RUN $HOME/.cargo/bin/rustup toolchain link xtensa ${RUST_BUILD}
RUN $HOME/.cargo/bin/rustup run xtensa rustc --print target-list | grep xtensa

# Setup ESP-IDF & esptool
ENV ESP32_IDF /xtensa-esp32-elf
ENV ESP8266_IDF /xtensa-lx106-elf
WORKDIR /
RUN wget https://dl.espressif.com/dl/xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz && \
	tar xzf xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz && \
	rm xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz && \
    wget https://dl.espressif.com/dl/xtensa-lx106-elf-linux64-1.22.0-100-ge567ec7-5.2.0.tar.gz && \
    tar xzf xtensa-lx106-elf-linux64-1.22.0-100-ge567ec7-5.2.0.tar.gz && \
    rm xtensa-lx106-elf-linux64-1.22.0-100-ge567ec7-5.2.0.tar.gz
RUN pip install esptool
	
## Setup Xargo
RUN $HOME/.cargo/bin/cargo install xargo
ENV XARGO_RUST_SRC ${BUILD_ROOT}/rust-xtensa/src
ENV RUSTC ${RUST_BUILD}/bin/rustc

## Setup path
ENV HOME /root
ENV PATH ${ESP8266_IDF}/bin:${ESP32_IDF}/bin:/usr/local/bin:${HOME}/.cargo/bin:$PATH

## test build sample project
WORKDIR /
RUN git clone https://github.com/mtnmts/xtensa-rust-quickstart
WORKDIR /xtensa-rust-quickstart
RUN xargo build --release
WORKDIR /
RUN rm -rf /xtensa-rust-quickstart

## Make it a bit more convinient for people dropping into the container
## The image is already quite large, this doesn't make a significant difference
RUN apt-get install -y neovim vim xxd tmux fish

## Build project from /code
WORKDIR /code
CMD [ "xargo", "build", "--release" ]