Build with Emscripten for WebAssembly

.github/workflows/emsdk.yml

@@ -0,0 +1,66 @@
+name: Build InfiniSim LVGL Simulator using emscripten
+  # Run on all branches
+  push:
+    branches: []
+
+  # Also run this Workflow when a Pull Request is created or updated in the "main" and "develop" Branch
+  pull_request:
+    branches: [ main, develop ]
+
+jobs:
+  emscripten:
+    runs-on: ubuntu-latest
+    steps:
+
+      #########################################################################################
+      # Download and Install Dependencies
+
+      - name: Setup emsdk
+        uses: mymindstorm/setup-emsdk@v11
+        with:
+          # Make sure to set a version number!
+          version: 3.1.8
+          # This is the name of the cache folder.
+          # The cache folder will be placed in the build directory,
+          #  so make sure it doesn't conflict with anything!
+          actions-cache-folder: 'emsdk-cache'
+
+      - name: Tell emsdk to use SDL with pthread proxy fix
+        run: sed -i -e "s/^TAG =.*/TAG = 'ea7d5307acfb1daf9af6104b60b75114b15bcd27'/" -e "s/HASH =.*/HASH = 'b7d58124f0d1145f23338abfdb6aa07855ac74ed80b3a5b613d23b4930c84d04d1794a62aab2ca2680ba369128ee2028ea51236fab4aaf70556036172fa59e6a'/" emsdk-cache/upstream/emscripten/tools/ports/sdl2.py
+
+      - name: Verify
+        run: emcc -v
+
+      - name: Install cmake
+        uses: lukka/[email protected]
+
+      #########################################################################################
+      # Checkout
+
+      - name: Checkout source files
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      #########################################################################################
+      # CMake
+
+      - name: CMake
+        run:  |
+          emcmake cmake -S . -B build_em -DCMAKE_BUILD_TYPE=Release
+
+      #########################################################################################
+      # Build and Upload simulator wasm files
+
+      - name: Build simulator executable
+        run:  |
+          cmake --build build_lv_sim
+
+      - name: Upload simulator executable
+        uses: actions/upload-artifact@v3
+        with:
+          name: infinisim_emscripten
+          path: |
+            build_em/infinisim.html
+            build_em/infinisim.js
+            build_em/infinisim.wasm

.gitmodules

@@ -1,6 +1,6 @@
 [submodule "InfiniTime"]
 	path = InfiniTime
-	url = ../../InfiniTimeOrg/InfiniTime.git
+	url = ../../NeroBurner/InfiniTime.git
 [submodule "lv_drivers"]
 	path = lv_drivers
 	url = ../../lvgl/lv_drivers.git

CMakeLists.txt

@@ -216,11 +216,30 @@ target_sources(infinisim PUBLIC
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 # Special case for SDL2 dependency, goal is to find a config that exports SDL2::SDL2 target
 # libsdl2-dev has a `sdl2-config.cmake` that doesn't export this, but vcpkg does..
+if(${CMAKE_SYSTEM_NAME} MATCHES "Emscripten")
+  # emcmake cmake -S . -B _build_em
+  set(USE_FLAGS "-s USE_PTHREADS=1 -pthread")
+  set(USE_FLAGS "${USE_FLAGS} -s USE_SDL=2")
+  set(USE_FLAGS "${USE_FLAGS} -fwasm-exceptions")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${USE_FLAGS}")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${USE_FLAGS}")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${USE_FLAGS}")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s PTHREAD_POOL_SIZE=4 -s PROXY_TO_PTHREAD=1")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s INITIAL_MEMORY=30736384") # 30MB memory
+  #set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s ALLOW_MEMORY_GROWTH=1")
+  #set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s ABORTING_MALLOC=0")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -s EXPORTED_RUNTIME_METHODS=[\"printErr\"]")
+  set(CMAKE_EXECUTABLE_SUFFIX .html)
+  target_include_directories(infinisim PRIVATE ${SDL2_INCLUDE_DIRS})
+  target_link_libraries(infinisim PRIVATE ${SDL2_LIBRARIES})
+  #set_target_properties(infinisim PROPERTIES LINK_FLAGS "--shell-file ${PROJECT_SOURCE_DIR}/lvgl_shell.html")
+else()
 find_package(SDL2 CONFIG QUIET)
 if(NOT TARGET SDL2::SDL2)
   find_package(SDL2 MODULE REQUIRED)
 endif()
 target_link_libraries(infinisim PRIVATE SDL2::SDL2)
+endif()
 
 # Get the latest abbreviated commit hash of the working branch
 execute_process(

main.cpp

@@ -806,7 +806,7 @@ class Framework {
 int main(int argc, char **argv)
 {
   // parse arguments
-  bool fw_status_window_visible = true;
+  bool fw_status_window_visible = false;
   bool arg_help = false;
   for (int i=1; i<argc; i++)
   {