# Copyright (C) 2019 Intel Corporation.  All rights reserved.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
name: Reusable workflow-build_llvm_libraries

on:
  workflow_call:
    inputs:
      os:
        required: true
        type: string
      arch:
        required: true
        type: string
    outputs:
      cache_key:
        description: "A cached key of LLVM libraries"
        value: ${{ jobs.build_llvm_libraries.outputs.key}}

jobs:
  build_llvm_libraries:
    runs-on: ${{ inputs.os }}
    outputs:
      key: ${{ steps.create_lib_cache_key.outputs.key}}

    steps:
      - name: checkout
        uses: actions/checkout@v3

      - name: install dependencies
        run: /usr/bin/env python3 -m pip install -r requirements.txt
        working-directory: build-scripts

      - name: retrive the last commit ID
        id: get_last_commit
        run: echo "last_commit=$(GH_TOKEN=${{ secrets.GITHUB_TOKEN }} /usr/bin/env python3 ./build_llvm.py --llvm-ver)" >> $GITHUB_OUTPUT
        working-directory: build-scripts

      # Bump the prefix number to evict all previous caches and
      # enforce a clean build, in the unlikely case that some
      # weird build error occur and llvm/build becomes a potential
      # suspect.
      - name: form the cache key of libraries
        id: create_lib_cache_key
        run: echo "key=0-llvm-libraries-${{ inputs.os }}-${{ inputs.arch }}-${{ steps.get_last_commit.outputs.last_commit }}" >> $GITHUB_OUTPUT

      - name: Cache LLVM libraries
        id: retrieve_llvm_libs
        uses: actions/cache@v3
        with:
          path: |
            ./core/deps/llvm/build/bin
            ./core/deps/llvm/build/include
            ./core/deps/llvm/build/lib
            ./core/deps/llvm/build/libexec
            ./core/deps/llvm/build/share
          key: ${{ steps.create_lib_cache_key.outputs.key}}

      - uses: actions/cache@v3
        with:
          path: ~/.ccache
          key: 0-ccache-${{ inputs.os }}-${{ steps.get_last_commit.outputs.last_commit }}
          restore-keys: |
            0-ccache-${{ inputs.os }}
        if: steps.retrieve_llvm_libs.outputs.cache-hit != 'true' && inputs.os == 'ubuntu-20.04'

      - uses: actions/cache@v3
        with:
          path: ~/.cache/ccache
          key: 0-ccache-${{ inputs.os }}-${{ steps.get_last_commit.outputs.last_commit }}
          restore-keys: |
            0-ccache-${{ inputs.os }}
        if: steps.retrieve_llvm_libs.outputs.cache-hit != 'true' && inputs.os == 'ubuntu-22.04'

      - run: sudo apt install -y ccache ninja-build
        if: steps.retrieve_llvm_libs.outputs.cache-hit != 'true' && startsWith(inputs.os, 'ubuntu')

      - uses: actions/cache@v3
        with:
          path: ~/Library/Caches/ccache
          key: 0-ccache-${{ inputs.os }}-${{ steps.get_last_commit.outputs.last_commit }}
          restore-keys: |
            0-ccache-${{ inputs.os }}
        if: steps.retrieve_llvm_libs.outputs.cache-hit != 'true' && startsWith(inputs.os, 'macos')

      - run: brew install ccache ninja
        if: steps.retrieve_llvm_libs.outputs.cache-hit != 'true' && startsWith(inputs.os, 'macos')

      - name: Build LLVM libraries
        if: steps.retrieve_llvm_libs.outputs.cache-hit != 'true'
        run: /usr/bin/env python3 ./build_llvm.py --arch ${{ inputs.arch }}
        working-directory: build-scripts