name: "Setup build environment"
description: "Setup the build environment. An action so that it can be shared between in-tree/out-of-tree jobs"

inputs:
  cache-key:
    description: |
      Additional string that is used to compute the ccache hash.
      Different jobs running the action need distinct values for this key,
      but the content is irrelevant.
    required: true

runs:
  using: "composite"
  steps:
  - name: Set up Python
    uses: actions/setup-python@v2
    with:
      python-version: 3.9
  - name: Install MLIR Python depends
    run: |
      python -m pip install -r $GITHUB_WORKSPACE/externals/llvm-project/mlir/python/requirements.txt
    shell: bash
  - name: Install PyTorch nightly depends
    run: |
      python -m pip install -r requirements.txt
    shell: bash
  - name: Install Ninja
    uses: llvm/actions/install-ninja@55d844821959226fab4911f96f37071c1d4c3268
  - name: Get Submodule Hash
    id: get-submodule-hash
    run: echo "::set-output name=hash::$(md5sum $(git submodule status))"
    shell: bash
  - name: Ccache for C++ compilation
    uses: hendrikmuhs/ccache-action@4687d037e4d7cf725512d9b819137a3af34d39b3
    with:
      key: ${{ runner.os }}-clangreleaseasserts-${{ steps.get-submodule-hash.outputs.hash }}-${{ inputs.cache-key }}