install-rust-lld-ARM.sh

#!/bin/bash
# Install all required dependencies for building Substrate based chains on ARM architectures.
# Copyright (C) Parity Technologies <admin@parity.io>
# License: Apache-2.0

# Set to the latest branch from: https://github.com/rust-lang/llvm-project
RUST_LLVM_BRANCH="rustc/10.0-2020-05-05"

if [[ "$OSTYPE" == "linux-gnu" ]] || [[ "$OSTYPE" == "linux-gnueabihf" ]]; then
  set -e
  if [[ $(whoami) == "root" ]]; then
    MAKE_ME_ROOT=
  else
    MAKE_ME_ROOT=sudo
  fi
  ARCH=$(uname -m)
  if [[ "$ARCH" == "aarch64" ]] || [[ "$ARCH" == "armv7l" ]]; then

    if [ -f /etc/debian_version ]; then
      echo "Ubuntu/Debian Linux detected."
      $MAKE_ME_ROOT apt update
      $MAKE_ME_ROOT apt-get install -y --no-install-recommends \
        build-essential \
        ninja-build \
        ca-certificates \
        cmake \
        pkg-config \
        libssl-dev \
        gcc \
        git \
        clang \
        libclang-dev \
        protobuf-compiler

    else
      echo "This Linux distribution is not supported with this script at present. Sorry."
      echo "Please refer to https://github.com/paritytech/substrate for setup information."
      exit 1
    fi

    if ! which rustup >/dev/null 2>&1; then
      curl https://sh.rustup.rs -sSf | sh -s -- -y
      source ~/.cargo/env
      rustup default stable
    else
      rustup update
      rustup default stable
    fi

    rustup update nightly --force
    rustup target add wasm32-unknown-unknown --toolchain nightly

    echo "Building llvm-ld for: $ARCH"

    tmp=$(mktemp -d)
    git clone -b $RUST_LLVM_BRANCH --depth 1 https://github.com/rust-lang/llvm-project.git "$tmp"
    pushd "$tmp"
    mkdir -p llvm/tools/lld
    cp -R lld/ llvm/tools/
    mkdir -p "$tmp"/build/arm
    cd "$tmp"/build/arm
    if [ "$ARCH" == "aarch64" ]; then
      cmake -G Ninja "$tmp"/llvm \
        -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_INSTALL_PREFIX=/opt/local/llvm \
        -DLLVM_TARGETS_TO_BUILD="AArch64" \
        -DLLVM_TARGET_ARCH="AArch64"
    else
      cmake -G Ninja "$tmp"/llvm \
        -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_INSTALL_PREFIX=/opt/local/llvm \
        -DLLVM_TARGETS_TO_BUILD="ARM" \
        -DLLVM_TARGET_ARCH="ARM"
    fi
    ninja lld
    $MAKE_ME_ROOT ninja install-lld
    popd

    echo "Installing rust-lld for: $ARCH"
    cp -f /opt/local/llvm/bin/ld.lld ~/.cargo/bin/rust-lld
    source ~/.cargo/env

    echo "Run source ~/.cargo/env now to update environment"

  else
    echo "This architecture is not supported with this script at present. Sorry."
    echo "Please refer to https://github.com/paritytech/substrate for setup information."
    exit 1
  fi

else
  echo "This OS is not supported with this script at present. Sorry."
  echo "Please refer to https://github.com/paritytech/substrate for setup information."
  exit 1
fi