ci.yml

name: CI

on:
  push:
    branches:
      - main
      - 'feature/**'
  pull_request:
    branches:
      - main
      - 'feature/**'
  schedule:
    - cron: 00 4 * * *

env:
  CARGO_TERM_COLOR: always

jobs:
  llvm:
    uses: ./.github/workflows/llvm.yml

  lint-stable:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
          components: clippy, rust-src

      - name: Run clippy
        run: cargo clippy --features llvm-sys/no-llvm-linking --all-targets --workspace -- --deny warnings

  lint-nightly:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: nightly
          components: rustfmt, rust-src

      - name: Check formatting
        run: cargo fmt --all -- --check

  build:
    # We don't use ubuntu-latest because we care about the apt packages available.
    runs-on: ubuntu-22.04
    strategy:
      fail-fast: false
      matrix:
        rust:
          - stable
          - beta
          - nightly
        llvm:
          - 19
          - source
    name: rustc=${{ matrix.rust }} llvm=${{ matrix.llvm }}
    needs: llvm

    env:
      RUST_BACKTRACE: full

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust ${{ matrix.rust }}
        if: matrix.rust != 'nightly'
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}

      - name: Install Rust ${{ matrix.rust }}
        if: matrix.rust == 'nightly'
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}
          components: rust-src

      - uses: Swatinem/rust-cache@v2

      - name: Check (default features, no system LLVM)
        run: cargo check

      - name: Build (default features, no system LLVM)
        run: cargo build

      - name: Install btfdump
        if: matrix.rust == 'nightly'
        run: cargo install btfdump

      - name: Install prerequisites
        if: matrix.rust == 'nightly'
        # ubuntu-22.04 comes with clang 13-15[0]; support for signed and 64bit
        # enum values was added in clang 15[1] which isn't in `$PATH`.
        #
        # gcc-multilib provides at least <asm/types.h> which is referenced by libbpf.
        #
        # [0] https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md
        #
        # [1] https://github.com/llvm/llvm-project/commit/dc1c43d
        run: |
          set -euxo pipefail
          sudo apt update
          sudo apt -y install gcc-multilib
          echo /usr/lib/llvm-15/bin >> $GITHUB_PATH

      - name: Install LLVM
        if: matrix.llvm != 'source'
        run: |
          set -euxo pipefail
          wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
          echo -e deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-${{ matrix.llvm }} main | sudo tee /etc/apt/sources.list.d/llvm.list

          sudo apt update
          # TODO(vadorovsky): Remove the requirement of libpolly.
          #
          # Packages from apt.llvm.org are being built all at once, with one
          # cmake build with superset of options, then different binaries and
          # libraries are being included in different packages.
          #
          # That results in `llvm-config --libname --link-static` mentioning
          # libpolly, even if it's not installed. The output of that command is
          # being used in build.rs of llvm-sys, so building llvm-sys on such
          # system is complaining about lack of libpolly.
          #
          # Hopefully that nightmare goes away once we switch to binstalls and
          # ditch the system LLVM option.
          sudo apt -y install llvm-${{ matrix.llvm }}-dev libpolly-${{ matrix.llvm }}-dev
          echo /usr/lib/llvm-${{ matrix.llvm }}/bin >> $GITHUB_PATH

      - name: Restore LLVM
        if: matrix.llvm == 'source'
        uses: actions/cache/restore@v4
        with:
          path: llvm-install
          key: ${{ needs.llvm.outputs.cache-key }}
          fail-on-cache-miss: true

      - name: Add LLVM to PATH && LD_LIBRARY_PATH
        if: matrix.llvm == 'source'
        run: |
          set -euxo pipefail
          echo "${{ github.workspace }}/llvm-install/bin" >> $GITHUB_PATH
          # LD_LIBRARY_PATH is needed because we're going to link everything dynamically below. This
          # doesn't affect behavior, but greatly reduces disk usage.
          echo "LD_LIBRARY_PATH=${{ github.workspace }}/llvm-install/lib" >> $GITHUB_ENV

      # llvm-sys discovers link flags at build script time; these are cached by cargo. The cached
      # flags may be incorrect when the cache is reused across LLVM versions.
      - name: Bust llvm-sys cache
        run: |
          set -euxo pipefail
          cargo clean -p llvm-sys
          cargo clean -p llvm-sys --release

      - uses: taiki-e/install-action@cargo-hack

      - name: Check
        run: cargo hack check --feature-powerset

      - name: Build
        run: cargo hack build --feature-powerset

      - name: Test
        if: matrix.rust == 'nightly'
        run: cargo hack test --feature-powerset

      - uses: actions/checkout@v4
        if: matrix.rust == 'nightly'
        with:
          repository: aya-rs/aya
          path: aya
          submodules: recursive

      - name: Install
        if: matrix.rust == 'nightly'
        run: cargo install --path . --no-default-features

      - name: Run aya integration tests
        if: matrix.rust == 'nightly'
        working-directory: aya
        run: cargo xtask integration-test local