Prerequisites

• Emscripten
• CMake
• Python, run http server for testing

Build

$ cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=/path/to/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake -S . -B build.wasm 
$ cmake --build build.wasm -j8 -t demo

Run

$ ./test/run_http_server.sh

Open test page in browser, and check logs in browser's console.