This is a starter project to build the C++ source to Web Assembly (WASM) with the Emscripten tool chain. Actually we can build C++ files to WASM with Emscripten only.

emcc -o build\main.js file1.cpp file2.cpp

But managing the large project will be difficult. For a large project CMake build system helps a lot. This starter project uses the emscripten on top of the CMake project. It also allows us to build existing CMake projects with much changes.

Details: https://emscripten.org/docs/compiling/Building-Projects.html

Setup environment

1. open bash
2. go to emsdk directorty and followings run command
    ./emsdk activate latest
    source ./emsdk_env.sh

Build setup

3. create directory 'cmake_test' 
    mkdir build
    cd build

4. clear dirctory if needed
    go to build directory and run
    rm -rf *

5. configure cmake
    emconfigure cmake .. 

6. build the source to wasm
    emmake make