Compiled some C code to WASM and called it from Dart (non-Flutter) web app compiled to WASM.

This project demonstrates the process of compiling C code into WebAssembly (WASM) and calling it from a Dart web application, also compiled to WebAssembly. By leveraging WebAssembly, developers can integrate performance-sensitive C code directly into Dart web applications without the need for server-side processing.

Project Description

For this project, we've compiled a small C module using Emscripten to create a WASM module. This module contains a single C function that will be invoked from Dart code. The Dart code utilizes the dart:ffi library and @Native annotations to import the C function and interact with it. Additionally, the Dart code makes use of the package:web library to interact with the DOM for input and output purposes.

The workflow involves compiling the C code to WASM using Emscripten and the Dart code to WASMGC using the dart compile wasm command. This generates main.dart.mjs and main.dart.wasm files. The main.dart.mjs file is used to instantiate and invoke the WebAssembly-compiled Dart program.

Sample Project Details

Setup Instructions

1. Compile the C module to WASM:

   emcc my_c_module.c WASM=1 -o my_c_module.wasm
   

2. Compile the Dart code to WASMGC:

   dart compile wasm main.dart
   

---