qemu.yml

name: Build QEMU
on:
  workflow_dispatch:
    inputs:
      version:
        required: false
        type: string
        default: '8.2.2'

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        arch: [aarch64, x86_64]
    steps:

    - name: Install dependencies
      run: sudo apt install -y libglib2.0-dev libfdt-dev libpixman-1-dev zlib1g-dev ninja-build libslirp-dev

    - name: Cache QEMU source
      id: cache
      uses: actions/cache@v4
      with:
        path: qemu-${{ inputs.version }}
        key: qemu-${{ inputs.version }}

    - name: Download QEMU source
      if: steps.cache.outputs.cache-hit != 'true'
      run: |
        wget --no-verbose https://download.qemu.org/qemu-${{ inputs.version }}.tar.xz
        tar -xf qemu-${{ inputs.version }}.tar.xz

    - name: Build QEMU
      run: |
        cd qemu-${{ inputs.version }}
        ./configure --enable-slirp --target-list=${{ matrix.arch }}-softmmu
        make -j$(nproc)

        strip build/qemu-system-${{ matrix.arch }}

    - name: Upload QEMU binary
      uses: actions/upload-artifact@v4
      with:
        name: qemu-${{ matrix.arch }}
        path: |
          qemu-${{ inputs.version }}/build/qemu-system-${{ matrix.arch }}

  release:
    runs-on: ubuntu-latest
    needs: build
    permissions:
      contents: write
    steps:

    - name: Download QEMU binaries
      uses: actions/download-artifact@v4

    - name: Publish release
      uses: softprops/action-gh-release@v2
      with:
        prerelease: true
        tag_name: qemu-${{ inputs.version }}-${{ github.workflow_sha }}
        files: |
          qemu-x86_64/qemu-system-x86_64
          qemu-aarch64/qemu-system-aarch64