dongeronimo / emscripten_hello_world Goto Github PK

#Hello Emscripten

Demonstrates how to use emscripten to compile a simple hello world c++ program to javascript

##setup: ###emscripten: Pull it from the repo then go to it's directory. Then

$ ./emsdk install latest
$ ./emsdk activate latest
$ source ./emsdk_env.sh

That will set emscripten and put it's programs in the shell's path.

###cmake: Using the cmakelists.txt in this project I will create a build directory and change to it. Then...

$ emcmake cmake ...
$ emmake make

The final result is a javascript and an index.html scaffolded by emscripten to use that js file. The js file will use the .wasm that was generated.

###Running: Assuming that the machine has python3 installed I run, inside the build directory:

$ python3 -m http.server

That will start a quick and dirty http server with the contents of the current directory, at 127.0.0.1:8000