newgyu / rust-wasm-with-graphviz

To try to build rust code with Graphviz using cmake crate

What's this?

This is an example to try to build rust code which depends on Graphviz written in C/C++ and CMake.

I believe that CMake crate should help linking Rust code and C code.

How to build

It should be built by only executing cargo build command, but I'm not sure about Cargo building features. So for now, there are sevral steps that are not good enough.

It should be organized in the near future.

1. init submodules.

The clib-grapviz is a sub project to build Graphviz with CMake crate. It has two submodules, so they have to be initialized with git submodule init && git submodule update.

• emsdk
• src-graphviz

2. Setup emsdk

$ cd emsdk
$ ./emsdk install latest
$ ./emsdk activate latest

Note: For now, latest means 3.1.13.

3. Install packages.

These steps should be dockalized.

$ sudo apt update
$ sudo apt install -y cmake bison flex

4. Build Graphviz

# Expect to generate some *.h and more.
# To re-try, remove `src-graphviz/build` dir once.
$ ./cpp-install-graphviz.sh
# Expect to build source codes to wasm with emscripten
$ ./cpp-build.sh