Configure CMake for building WASM using Emscripten

Example.GameLib/CMakeLists.txt

@@ -5,6 +5,12 @@ project(Example.GameLib)
 
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../ ${CMAKE_CURRENT_BINARY_DIR}/GameLib)
 
+if (EMSCRIPTEN)
+    SET(CMAKE_C_FLAGS  "${CMAKE_C_FLAGS} -s USE_SDL=2 -O2 -Wno-implicit-function-declaration -DEMSCRIPTEN")
+    SET(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS} -s USE_SDL=2 --preload-file ${CMAKE_CURRENT_SOURCE_DIR}/data@/data -s TOTAL_MEMORY=134217728 -lidbfs.js")
+    SET(CMAKE_EXECUTABLE_SUFFIX ".html")
+endif()
+
 
 # -------------------------------------------------------------
 # ----- Example.GameLib

Example.GameLib/dev-server.sh

@@ -0,0 +1,5 @@
+#! /bin/sh
+
+(sleep 1 && xdg-open http://localhost:8081) &
+
+php -S 0.0.0.0:8081 -t DIST/web

Example.GameLib/dist-emscripten.sh

@@ -4,9 +4,16 @@ if test -f /c/emsdk/emsdk_env.sh; then
     source /c/emsdk/emsdk_env.sh
 fi
 
-make arch=emscripten full-clean
-make arch=emscripten
+if test -d cmake-build-emscripten; then
+    rm -rf cmake-build-emscripten
+fi
+mkdir cmake-build-emscripten
+
+cd cmake-build-emscripten
+emcmake cmake ..
+make
+cd ..
 
 mkdir -p DIST/web
 cp -Rv web/* DIST/web/
-cp -Rv build-emscripten/game.* DIST/web/
+cp -Rv cmake-build-emscripten/game.* DIST/web/