https://github.com/emscripten-core/emscripten

Emscripten: An LLVM-to-WebAssembly Compiler
https://github.com/emscripten-core/emscripten

emscripten hacktoberfest wasm webassembly

Last synced: 9 days ago
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Emscripten: An LLVM-to-WebAssembly Compiler

• Host: GitHub
• URL: https://github.com/emscripten-core/emscripten
• Owner: emscripten-core
• License: other
• Created: 2011-02-12T05:23:30.000Z (over 13 years ago)
• Default Branch: main
• Last Pushed: 2024-10-29T19:49:23.000Z (10 days ago)
• Last Synced: 2024-10-29T20:39:15.126Z (10 days ago)
• Topics: emscripten, hacktoberfest, wasm, webassembly
• Language: C++
• Homepage:
• Size: 231 MB
• Stars: 25,769
• Watchers: 590
• Forks: 3,303
• Open Issues: 2,123
• Metadata Files:
  • Readme: README.md
  • Changelog: ChangeLog.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE
  • Security: SECURITY.md
  • Authors: AUTHORS

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README

        
![emscripten logo](media/switch_logo.png)

Main project page: 

GitHub CI status: [![CircleCI](https://circleci.com/gh/emscripten-core/emscripten.svg?style=svg)](https://circleci.com/gh/emscripten-core/emscripten/tree/main)

Chromium builder status: [emscripten-releases](https://ci.chromium.org/p/emscripten-releases)

Overview

--------

Emscripten compiles C and C++ to [WebAssembly](https://webassembly.org/) using

[LLVM](https://en.wikipedia.org/wiki/LLVM) and

[Binaryen](https://github.com/WebAssembly/binaryen/). Emscripten output can run

on the Web, in Node.js, and in

[wasm runtimes](https://v8.dev/blog/emscripten-standalone-wasm#running-in-wasm-runtimes).

Emscripten provides Web support for popular portable APIs such as OpenGL and

SDL2, allowing complex graphical native applications to be ported, such as

the [Unity game engine](https://docs.unity3d.com/Manual/webgl-gettingstarted.html)

and [Google Earth](https://blog.chromium.org/2019/06/webassembly-brings-google-earth-to-more.html).

It can probably port your codebase, too!

While Emscripten mostly focuses on compiling C and C++ using

[Clang](https://clang.llvm.org/), it can be integrated with other LLVM-using

compilers (for example, Rust has Emscripten integration, with the

`wasm32-unknown-emscripten` and `asmjs-unknown-emscripten` targets).

License

-------

Emscripten is available under 2 licenses, the MIT license and the

University of Illinois/NCSA Open Source License.

Both are permissive open source licenses, with little if any

practical difference between them.

The reason for offering both is that (1) the MIT license is

well-known and suitable for a compiler toolchain, while

(2) LLVM's original license, the University of Illinois/NCSA Open Source

License, was also offered to allow Emscripten's code to be integrated

upstream into LLVM. The second reason became less important after

Emscripten switched to the LLVM wasm backend, at which point there

isn't any code we expect to move back and forth between the projects;

also, LLVM relicensed to Apache 2.0 + exceptions meanwhile. In practice you

can just consider Emscripten as MIT licensed (which allows

you to do pretty much anything you want with a compiler, including

commercial and non-commercial use).

See `LICENSE` for the full content of the licenses.