Develop

.github/template/README.md

@@ -7,6 +7,14 @@
 ## About %%myproject%%
 %%description%%
 
+## WebAssembly Demo
+
+Try the live WebAssembly demo:
+- Main: [https://%%myorg%%.github.io/%%myproject%%/](https://%%myorg%%.github.io/%%myproject%%/)
+- Develop: [https://%%myorg%%.github.io/%%myproject%%/develop/](https://%%myorg%%.github.io/%%myproject%%/develop/)
+
+The `main` branch deploys to the root, `develop` to `/develop/`, and tags to `/tagname/`.
+
 
 ## More Details
 

.github/workflows/wasm.yml

@@ -0,0 +1,59 @@
+name: Build Intro WASM and Deploy to GitHub Pages
+
+on:
+  pull_request:
+  release:
+    types: [published]
+  push:
+    branches: [main, develop]
+    tags: ['**']
+
+permissions:
+  contents: write
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Emscripten
+        uses: mymindstorm/setup-emsdk@v14
+        with:
+          version: 'latest'
+
+      - name: Install Ninja
+        run: sudo apt-get install -y ninja-build
+
+      - name: Configure CMake
+        run: emcmake cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
+
+      - name: Build all WASM targets
+        run: emmake cmake --build build --target web-dist
+
+      - name: Prepare deployment
+        run: |
+          # web-dist target already created build/web-dist/
+          # Just copy it to dist/ for GitHub Pages action
+          cp -r build/web-dist dist
+
+      - name: Determine deploy path
+        id: deploy-path
+        if: github.event_name != 'pull_request' && github.event_name != 'release'
+        run: |
+          if [[ "$GITHUB_REF" == refs/tags/* ]]; then
+            echo "path=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+          elif [[ "$GITHUB_REF" == refs/heads/main ]]; then
+            echo "path=." >> $GITHUB_OUTPUT
+          elif [[ "$GITHUB_REF" == refs/heads/develop ]]; then
+            echo "path=develop" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Deploy to GitHub Pages
+        if: github.event_name != 'pull_request' && github.event_name != 'release'
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./dist
+          destination_dir: ${{ steps.deploy-path.outputs.path }}
+          keep_files: true

CMakeLists.txt

@@ -23,6 +23,7 @@ project(
   LANGUAGES CXX C)
 
 include(cmake/PreventInSourceBuilds.cmake)
+include(cmake/Emscripten.cmake)
 include(ProjectOptions.cmake)
 
 
@@ -60,6 +61,11 @@ add_subdirectory(configured_files)
 # Adding the src:
 add_subdirectory(src)
 
+# Create unified web deployment directory (for WASM builds)
+if(EMSCRIPTEN)
+  myproject_create_web_dist()
+endif()
+
 # Don't even look at tests if we're not top level
 if(NOT PROJECT_IS_TOP_LEVEL)
   return()

ProjectOptions.cmake

@@ -8,7 +8,11 @@ include(CheckCXXSourceCompiles)
 
 
 macro(myproject_supports_sanitizers)
-  if((CMAKE_CXX_COMPILER_ID MATCHES ".*Clang.*" OR CMAKE_CXX_COMPILER_ID MATCHES ".*GNU.*") AND NOT WIN32)
+  # Emscripten doesn't support sanitizers
+  if(EMSCRIPTEN)
+    set(SUPPORTS_UBSAN OFF)
+    set(SUPPORTS_ASAN OFF)
+  elseif((CMAKE_CXX_COMPILER_ID MATCHES ".*Clang.*" OR CMAKE_CXX_COMPILER_ID MATCHES ".*GNU.*") AND NOT WIN32)
 
     message(STATUS "Sanity checking UndefinedBehaviorSanitizer, it should be supported on this platform")
     set(TEST_PROGRAM "int main() { return 0; }")
@@ -166,19 +170,22 @@ macro(myproject_local_options)
     ""
     "")
 
-  if(myproject_ENABLE_USER_LINKER)
-    include(cmake/Linker.cmake)
-    myproject_configure_linker(myproject_options)
-  endif()
+  # Linker and sanitizers not supported in Emscripten
+  if(NOT EMSCRIPTEN)
+    if(myproject_ENABLE_USER_LINKER)
+      include(cmake/Linker.cmake)
+      myproject_configure_linker(myproject_options)
+    endif()
 
-  include(cmake/Sanitizers.cmake)
-  myproject_enable_sanitizers(
-    myproject_options
-    ${myproject_ENABLE_SANITIZER_ADDRESS}
-    ${myproject_ENABLE_SANITIZER_LEAK}
-    ${myproject_ENABLE_SANITIZER_UNDEFINED}
-    ${myproject_ENABLE_SANITIZER_THREAD}
-    ${myproject_ENABLE_SANITIZER_MEMORY})
+    include(cmake/Sanitizers.cmake)
+    myproject_enable_sanitizers(
+      myproject_options
+      ${myproject_ENABLE_SANITIZER_ADDRESS}
+      ${myproject_ENABLE_SANITIZER_LEAK}
+      ${myproject_ENABLE_SANITIZER_UNDEFINED}
+      ${myproject_ENABLE_SANITIZER_THREAD}
+      ${myproject_ENABLE_SANITIZER_MEMORY})
+  endif()
 
   set_target_properties(myproject_options PROPERTIES UNITY_BUILD ${myproject_ENABLE_UNITY_BUILD})
 

README.md

@@ -20,6 +20,13 @@ It includes
  * a basic CLI example
  * examples for fuzz, unit, and constexpr testing
  * large GitHub action testing matrix
+ * WebAssembly build support with automatic GitHub Pages deployment
+
+**Live Demo:** If you enable GitHub Pages in your project created from this template, you'll have a working example like this:
+- Main: [https://cpp-best-practices.github.io/cmake_template/](https://cpp-best-practices.github.io/cmake_template/)
+- Develop: [https://cpp-best-practices.github.io/cmake_template/develop/](https://cpp-best-practices.github.io/cmake_template/develop/)
+
+The `main` branch deploys to the root, `develop` to `/develop/`, and tags to `/tagname/`.
 
 It requires