# Rust on Xtensa Installation for Linux x64

Following instructions are specific for ESP32 and ESP32-S series based on Xtensa architecture.

Instructions for ESP-C series based on RISC-V architecture are described in document for [ESP32-C3](../README.md#esp32-c3).

Tested OS: Ubuntu 18 x64, Ubuntu 20 x64, Mint 20 x64, OpenSUSE Thumbleweed

## Prerequisites

- rustup - installed with nightly toolchain - https://rustup.rs/

## Installation commands

```sh
sudo apt install gcc wget xz-utils

rustup toolchain install nightly

VERSION="1.54.0-dev"
ARCH="x86_64-unknown-linux-gnu"
RUST_DIST="rust-${VERSION}-${ARCH}"
RUST_SRC_DIST="rust-src-${VERSION}"
TOOLCHAIN_DESTINATION_DIR="~/.rustup/toolchains/esp"

mkdir -p ${TOOLCHAIN_DESTINATION_DIR}

wget https://dl.espressif.com/dl/idf-rust/dist/${ARCH}/${RUST_DIST}.tar.xz
tar xvf ${RUST_DIST}.tar.xz
./${RUST_DIST}/install.sh --destdir=${TOOLCHAIN_DESTINATION_DIR} --prefix="" --without=rust-docs

wget https://dl.espressif.com/dl/idf-rust/dist/noarch/${RUST_SRC_DIST}.tar.xz
tar xvf ${RUST_SRC_DIST}.tar.xz
./${RUST_SRC_DIST}/install.sh --destdir=${TOOLCHAIN_DESTINATION_DIR} --prefix="" --without=rust-docs

rustup default esp

wget https://dl.espressif.com/dl/idf-rust/dist/${ARCH}/xtensa-esp32-elf-llvm11_0_0-llvmorg-11-init-21249-g36dbc8b-linux-amd64.tar.xz
tar xf xtensa-esp32-elf-llvm11_0_0-llvmorg-11-init-21249-g36dbc8b-linux-amd64.tar.xz
export PATH="`pwd`/xtensa-esp32-elf-clang/bin/:$PATH"

wget --continue https://github.com/espressif/rust-esp32-example/archive/refs/heads/main.zip
unzip main.zip
cd rust-esp32-example-main
```

## Select architecture for the build

For the ESP32 - default (Xtensa architecture):

```sh
idf.py set-target esp32
```

For the ESP32-S2 (Xtensa architecture):

```sh
idf.py set-target esp32s2
```

For the ESP32-S3 (Xtensa architecture):

```sh
idf.py set-target esp32s3
```

## Build and flash

```sh
idf.py build flash
```