build.yml

name: Build GraphMLIR

on: [push, pull_request]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout GraphMLIR GitHub repository
        uses: actions/checkout@v3
        with:
          submodules: true

      # in order to use commit hash as cache key
      - name: Get LLVM submodule commit hash
        run: |
          LLVM_COMMIT_HASH=$(git rev-parse HEAD:llvm)
          echo "LLVM_COMMIT_HASH=$LLVM_COMMIT_HASH" >> $GITHUB_ENV

      - name: Build CMake and Ninja
        run: |
          sudo apt-get update
          sudo apt-get install -y cmake ninja-build

      # outputs cache-hit boolean
      - name: Cache LLVM
        uses: actions/cache@v3
        id: restore-cache
        with:
          key: "llvm-${{ env.LLVM_COMMIT_HASH }}"
          path: ${{ github.workspace }}/llvm/
          # for partial match; output is false
          restore-keys: llvm-

      # conditional step, depends on output of Cache LLVM
      - name: Build LLVM
        if: steps.restore-cache.outputs.cache-hit != 'true'
        run: ./.github/scripts/build-llvm.sh
        shell: bash

      - name: Build project
        run: ./.github/scripts/build-project.sh
        shell: bash