build_and_test.yml

name: "Build & Test"

on:
  # allow direct trigger
  workflow_dispatch:
  push:
  pull_request:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

env:
  GCC_VERSION: "12"
  LLVM_VERSION: "18"

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4.1.1
        with:
          persist-credentials: false

      - name: Install dependencies
        run: |
          sudo apt-get update -y -qq
          sudo apt-get install -y -qq build-essential curl ninja-build debootstrap

      # Needed for some target toolchains like ld
      - name: Install gcc
        run: |
          sudo apt-get install -y -qq gcc-${GCC_VERSION} gcc-${GCC_VERSION}-riscv64-linux-gnu g++-${GCC_VERSION} g++-${GCC_VERSION}-riscv64-linux-gnu

      - name: Install llvm
        run: |
          curl -o llvm.sh https://apt.llvm.org/llvm.sh
          chmod u+x llvm.sh
          sudo ./llvm.sh ${LLVM_VERSION}
          sudo ln -srf $(which clang-${LLVM_VERSION}) /usr/bin/clang
          rm llvm.sh

      - name: Setup QEMU
        uses: docker/setup-qemu-action@v3.0.0

      - name: Check sysroot cache
        id: check-sysroot-cache
        uses: actions/cache@v3
        with:
          path: sysroot
          key: sysroot-${{ hashFiles('./.github/workflows/build_and_test.yml') }}

      - name: Create sysroot
        run: |
          sudo debootstrap --arch=riscv64 --verbose --include=fakeroot,symlinks --resolve-deps --variant=minbase --components=main,universe focal sysroot
          # Remove unused files to minimize cache
          sudo chroot sysroot symlinks -cr .
          sudo chown ${USER} -R sysroot
          rm -rf sysroot/{dev,proc,run,sys,var}
          rm -rf sysroot/usr/{sbin,bin,share}
          rm -rf sysroot/usr/lib/{apt,gcc,udev,systemd}
          rm -rf sysroot/usr/libexec/gcc
        if: steps.check-sysroot-cache.outputs.cache-hit != 'true'

      - name: Build
        shell: bash -ex -o pipefail {0}
        run: |
          cmake -S . -B build -GNinja \
            -DCMAKE_INSTALL_PREFIX="$(pwd)/install" \
            -DCMAKE_TOOLCHAIN_FILE=$(pwd)/CMakeToolchain/riscv.clang.cross.cmake \
            -DCMAKE_SYSROOT=$(pwd)/sysroot
          cmake --build build

      - name: Upload build artifacts
        uses: actions/upload-artifact@v3
        with:
          name: build
          path: |
            build/*
        if: always()

  test:
    runs-on: ubuntu-latest
    needs: [build]
    strategy:
      fail-fast: false
      matrix:
        include:
          - qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=128,elen=64,vext_spec=v1.0"
          - qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=256,elen=64,vext_spec=v1.0"
          - qemu_cpu: "rv64,zba=true,zbb=true,zbs=true,v=true,vlen=512,elen=64,vext_spec=v1.0"

    name: "test (qemu_cpu: \"${{ matrix.qemu_cpu }}\")"
    steps:
      - uses: actions/checkout@v4.1.1
        with:
          persist-credentials: false

      - name: Setup QEMU
        uses: docker/setup-qemu-action@v3.0.0

      - name: Check sysroot cache
        id: check-sysroot-cache
        uses: actions/cache@v3
        with:
          path: sysroot
          key: sysroot-${{ hashFiles('./.github/workflows/build_and_test.yml') }}

      - name: Install dependencies
        run: |
          sudo apt-get update -y -qq
          sudo apt-get install -y -qq libgmp-dev libmpfr-dev

      - name: Download build artifacts
        uses: actions/download-artifact@v3
        with:
          name: build

      - name: Fix build permissions
        run: |
          find .
          chmod +x build/test/test_*

      - name: Test
        env:
          CTEST_OUTPUT_ON_FAILURE: "TRUE"
        run: |
          if [[ -n "${{ matrix.qemu_cpu }}" ]]; then
            export QEMU_CPU="${{ matrix.qemu_cpu }}"
          fi
          export QEMU_LD_PREFIX=$(pwd)/sysroot
          cd build
          ctest -j$(nproc)

      - name: Upload test-${{ strategy.job-index }} artifacts
        uses: actions/upload-artifact@v3
        with:
          name: test-${{ strategy.job-index }}
          path: |
            build/Testing
        if: always()