Prototype of libzim in Webassembly

Demo at https://openzim.github.io/javascript-libzim/

It uses WORKERFS as FS with emscripten and run in a web worker, file object is mount before run, and name is passed as argument.

Steps to recompile manually

• Install emscripten : https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html
• Install dependencies necessary for compilation. On ubuntu 18.04, you need to activate universe repository and :

sudo apt install ninja-build meson pkg-config python3 autopoint libtool autoconf
sudo apt install zlib1g-dev libicu-dev libxapian-dev liblzma-dev

• activate emscripten environment variables with something like source ./emsdk_env.sh
• run make

Steps to recompile with Docker

While being at the root of this repository :

• Build the Docker image with the provided Dockerfile (based on https://hub.docker.com/r/emscripten/emsdk , which is based on Debian) :

docker build -t "docker-emscripten-libzim:v3" ./docker

• Run the build with :

docker run --rm -v $(pwd):/src -v /tmp/emscripten_cache/:/home/emscripten/.emscripten_cache -u $(id -u):$(id -g) -it docker-emscripten-libzim:v3 make