https://github.com/codewithmirza/dtow

Compile some C code to WASM and call it from Dart (non-Flutter) web app compiled to WASM.
https://github.com/codewithmirza/dtow

c compilation dart web-application webassembly

Last synced: about 2 months ago
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Compile some C code to WASM and call it from Dart (non-Flutter) web app compiled to WASM.

• Host: GitHub
• URL: https://github.com/codewithmirza/dtow
• Owner: codewithmirza
• Created: 2024-03-19T06:51:09.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2024-04-02T18:07:54.000Z (9 months ago)
• Last Synced: 2024-08-21T06:54:22.431Z (5 months ago)
• Topics: c, compilation, dart, web-application, webassembly
• Language: JavaScript
• Homepage: https://codewithmirza.github.io/dtow/
• Size: 6 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# 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

   ```

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