CI: Add webassembly build

.github/actions/cmake/action.yml

@@ -5,7 +5,7 @@ inputs:
     description: "Specify Qt version to use"
     required: true
   qt_arch:
-    description: "Specify Qt version to use"
+    description: "Specify Qt arch to use"
     default: "gcc_64"
   use_qt6:
     description: "Specify whether we're using Qt 5 or Qt 6"
@@ -16,6 +16,9 @@ inputs:
   additional_cmake_args:
     description: "Additional args to pass to CMake"
     default: ""
+  emsdk_cache_dir:
+    description: "Where to store emsdk cache"
+    default: "emsdk-cache"
 
 runs:
   using: "composite"
@@ -45,6 +48,26 @@ runs:
         arch: ${{ inputs.qt_arch }}
         install-deps: false
         modules: ${{ inputs.modules }}
+        extra: --autodesktop
+
+    - name: WASM-specific stuff
+      if: inputs.qt_arch == 'wasm_singlethread'
+      run: |
+        echo cmake_extra_args="'-DBUILD_SHARED_LIBS=OFF' '-DQT_HOST_PATH=$(realpath ${Qt6_DIR}/../gcc_64)'" >> "$GITHUB_ENV"
+      shell: bash
+
+    - name: Setup emsdk cache
+      id: cache-system-libraries
+      uses: actions/cache@v2
+      with:
+        key: emsdk-cache
+        path: ${{ inputs.emsdk_cache_dir }}
+
+    - uses: mymindstorm/setup-emsdk@v14
+      if: inputs.qt_arch == 'wasm_singlethread'
+      with:
+        version: 3.1.37
+        actions-cache-folder: ${{ inputs.emsdk_cache_dir }}
 
     - name: ccache
       uses: hendrikmuhs/[email protected]
@@ -53,17 +76,18 @@ runs:
 
     - name: Configure CMake
       run: |
+        chmod +x "${Qt6_DIR}/bin/qt-cmake"
         CFLAGS="-Werror ${CFLAGS}" \
         CXXFLAGS="-Werror ${CXXFLAGS}" \
-        cmake \
-        -S '${{github.workspace}}' \
-        -B '${{github.workspace}}/build' \
-        -DCMAKE_BUILD_TYPE=Release \
-        -DBUILD_TESTING=OFF \
-        -DCMAKE_C_COMPILER_LAUNCHER=ccache \
-        -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-        -DSHVSPY_USE_QT6=${{ inputs.use_qt6 }} \
-        ${{ env.cmake_extra_args }} \
-        ${{ inputs.additional_cmake_args }}
+        qt-cmake \
+          -S '${{github.workspace}}' \
+          -B '${{github.workspace}}/build' \
+          -DCMAKE_BUILD_TYPE=Release \
+          -DBUILD_TESTING=OFF \
+          -DCMAKE_C_COMPILER_LAUNCHER=ccache \
+          -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
+          -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
+          -DSHVSPY_USE_QT6=${{ inputs.use_qt6 }} \
+          ${{ env.cmake_extra_args }} \
+          ${{ inputs.additional_cmake_args }}
       shell: bash

.github/workflows/webassembly.yml

@@ -0,0 +1,54 @@
+name: WebAssembly
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+permissions:
+  pages: write
+
+jobs:
+  ubuntu-qt6-wasm:
+    name: Qt 6.6.3 / Ubuntu 22.04
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Clone the repository
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Setup CMake
+        uses: ./.github/actions/cmake
+        with:
+          qt_version: 6.6.3
+          qt_arch: wasm_singlethread
+          use_qt6: ON
+          modules: qtwebsockets
+          additional_cmake_args: -DCMAKE_INSTALL_PREFIX='${{ github.workspace }}/install-shvspy'
+
+      - name: Build
+        run: cmake --build '${{github.workspace}}/build' --parallel "$(nproc)"
+        shell: bash
+
+      - name: Consolidate WebAssembly artifacts
+        run: |
+          mkdir gh-sources
+          cp '${{github.workspace}}'/build/shvspy/*.js '${{github.workspace}}'/build/shvspy/*.wasm '${{github.workspace}}'/build/shvspy/*.html gh-sources/
+        shell: bash
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v3
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: 'gh-sources/'
+
+      - name: Deploy to GitHub Pages
+        uses: actions/deploy-pages@v2