Add GH workflow to build QEMU

Author: gsingh93

Diff for: .github/workflows/qemu.yml

@@ -0,0 +1,51 @@
+name: Build QEMU
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        required: false
+        type: string
+        default: '8.2.2'
+      arch:
+        required: false
+        type: choice
+        options:
+          - 'x86_64'
+          - 'aarch64'
+        default: 'x86_64'
+
+jobs:
+  build:
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Install dependencies
+      run: sudo apt install -y libglib2.0-dev libfdt-dev libpixman-1-dev zlib1g-dev ninja-build
+
+    - 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-${{ inputs.version }}
+        ./configure --static --target-list=${{ inputs.arch }}-softmmu
+        make -j$(nproc)
+
+    - name: Publish release
+      uses: softprops/action-gh-release@v2
+      with:
+        prerelease: true
+        tag_name: qemu-${{ inputs.arch }}-${{ inputs.version }}-${{ github.workflow_sha }}
+        files: qemu-${{ inputs.version }}/build/qemu-system-${{ inputs.arch }}