name: CI libgccjit 12

on:
  push:
    branches:
      - master
  pull_request:

permissions:
  contents: read

env:
  # Enable backtraces for easier debugging
  RUST_BACKTRACE: 1
  TEST_FLAGS: "-Cpanic=abort -Zpanic-abort-tests"
  # FIXME(antoyo): we need to set GCC_EXEC_PREFIX so that the linker can find the linker plugin.
  # Not sure why it's not found otherwise.
  GCC_EXEC_PREFIX: /usr/lib/gcc/

jobs:
  build:
    runs-on: ubuntu-24.04

    strategy:
      fail-fast: false
      matrix:
        commands: [
          "--mini-tests",
          "--std-tests",
          # FIXME: re-enable asm tests when GCC can emit in the right syntax.
          # "--asm-tests",
          "--test-libcore",
          "--test-successful-rustc --nb-parts 2 --current-part 0",
          "--test-successful-rustc --nb-parts 2 --current-part 1",
        ]

    steps:
    - uses: actions/checkout@v4

    # `rustup show` installs from rust-toolchain.toml
    - name: Setup rust toolchain
      run: rustup show

    - name: Setup rust cache
      uses: Swatinem/rust-cache@v2

    - name: Install packages
      # `llvm-14-tools` is needed to install the `FileCheck` binary which is used for asm tests.
      run: sudo apt-get install ninja-build ripgrep llvm-14-tools libgccjit-12-dev

    - name: Setup path to libgccjit
      run: echo 'gcc-path = "/usr/lib/gcc/x86_64-linux-gnu/12"' > config.toml

    - name: Set env
      run: |
        echo "workspace="$GITHUB_WORKSPACE >> $GITHUB_ENV
        echo "LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/12" >> $GITHUB_ENV
        echo "LD_LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/12" >> $GITHUB_ENV

    #- name: Cache rust repository
      ## We only clone the rust repository for rustc tests
      #if: ${{ contains(matrix.commands, 'rustc') }}
      #uses: actions/cache@v3
      #id: cache-rust-repository
      #with:
        #path: rust
        #key: ${{ runner.os }}-packages-${{ hashFiles('rust/.git/HEAD') }}

    - name: Build
      run: |
        ./y.sh prepare --only-libcore --libgccjit12-patches
        ./y.sh build --no-default-features --sysroot-panic-abort
        # Uncomment when we no longer need to remove global variables.
        #./y.sh build --sysroot --no-default-features --sysroot-panic-abort
        #cargo test --no-default-features
        #./y.sh clean all

    #- name: Prepare dependencies
      #run: |
        #git config --global user.email "user@example.com"
        #git config --global user.name "User"
        #./y.sh prepare --libgccjit12-patches

    #- name: Add more failing tests for GCC 12
      #run: cat tests/failing-ui-tests12.txt >> tests/failing-ui-tests.txt

    #- name: Run tests
      #run: |
        #./y.sh test --release --clean --build-sysroot ${{ matrix.commands }} --no-default-features

  # Summary job for the merge queue.
  # ALL THE PREVIOUS JOBS NEED TO BE ADDED TO THE `needs` SECTION OF THIS JOB!
  success_gcc12:
    needs: [build]
    # We need to ensure this job does *not* get skipped if its dependencies fail,
    # because a skipped job is considered a success by GitHub. So we have to
    # overwrite `if:`. We use `!cancelled()` to ensure the job does still not get run
    # when the workflow is canceled manually.
    if: ${{ !cancelled() }}
    runs-on: ubuntu-latest
    steps:
      # Manually check the status of all dependencies. `if: failure()` does not work.
      - name: Conclusion
        run: |
          # Print the dependent jobs to see them in the CI log
          jq -C <<< '${{ toJson(needs) }}'
          # Check if all jobs that we depend on (in the needs array) were successful.
          jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'
