build_test_rv.yaml

name: Build and test RISC-V
run-name: Build and test RISC-V PR${{ github.event.number }}

# Separate GitHub Actions workflow to run the RISC-V tests only when the RISC-V
# SIMD backend changes, because tests rely on QEMU which is much slower than
# the other ISAs where we can test natively.

on:
  workflow_dispatch:
  pull_request:
    branches:
      - main
    paths:
      - 'Source/astcenc_vecmathlib_rvv_n.h'
      - 'Source/UnitTest/test_simd.cpp'

jobs:
  build-ubuntu-rvv256-clang:
    name: Ubuntu rvv256 Clang
    runs-on: ubuntu-24.04
    steps:
      - name: Git checkout
        uses: actions/checkout@v6
        with:
          submodules: 'true'

      - name: Update apt packages
        run: sudo apt-get update

      - name: Install ImageMagick
        run: sudo apt-get install imagemagick

      - name: Install clang-20 and RISC-V binutils
        run: sudo apt-get install clang-20 g++-riscv64-linux-gnu

      - name: Install RISC-V qemu
        run: sudo apt-get install qemu-user-static

      - name: Setup Python
        uses: actions/setup-python@v6
        with:
          python-version: '3.12'

      - name: Get Python modules
        run: |
          python -m pip install --upgrade pip
          pip install numpy Pillow

      - name: Build release
        run: |
          export CXX=clang++-20
          export CXXFLAGS="--target=riscv64-linux-gnu -march=rv64gcv_zvl256b -mrvv-vector-bits=zvl"
          mkdir build_rel
          cd build_rel
          cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../ -DASTCENC_UNITTEST=ON -DASTCENC_ISA_NONE=ON ..
          make install -j4

      - name: Build debug
        run: |
          export CXX=clang++-20
          export CXXFLAGS="--target=riscv64-linux-gnu -march=rv64gcv_zvl256b -mrvv-vector-bits=zvl"
          mkdir build_dbg
          cd build_dbg
          cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug -DASTCENC_ISA_NONE=ON ..
          make -j4

      - name: Run system tests
        run: |
          export QEMU_CPU="max,vlen=256,rvv_ta_all_1s=on,rvv_ma_all_1s=on"
          export QEMU_LD_PREFIX="/usr/riscv64-linux-gnu"
          python ./Test/astc_test_functional.py --encoder none
          python ./Test/astc_test_image.py --encoder none --test-set Small

      - name: Run unit tests
        run: |
          export QEMU_CPU="max,vlen=256,rvv_ta_all_1s=on,rvv_ma_all_1s=on"
          export QEMU_LD_PREFIX="/usr/riscv64-linux-gnu"
          ctest --rerun-failed --output-on-failure
        working-directory: build_rel