wajic
cib
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wajic
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CoWasm: An alternative to Emscripten, based on Zig (demo: Python in the browser)
This is a slim alternative to Emscripten which focuses only on the C/C++ <=> JS interoperability part:
https://github.com/schellingb/wajic
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From a WebAssembly Perspective
There's actually a super interesting project called wajic here:
https://github.com/schellingb/wajic
It's basically clang plus wasm-opt and some magic pixie dust which enables some of the most important features of Emscripten, but without the whole 'technology zoo' :)
- Zig and WASM
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WebAssembly and C++
There's now an interesting alternative to Emscripten called WaJIC:
https://github.com/schellingb/wajic
Enables most of the "Emscripten magic" (like embedding Javascript code into C/C++ files), but in a more bare bones package (apart from clang it essentially just uses the wasm-opt tool from Binaryen for post-processing).
(to be clear, wajic has fewer out-of-the-box features than Emscripten, but it might be an alternative for very small projects which don't need all the compatibility shims which are coming with Emscripten, while still providing tools for calling between C/C++ and JS.
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Show HN: How to compile C/C++ for WASM, pure Clang, no libs, no framework
Since I haven't seen it mentioned in the comments yet, here's another interesting project in the general area of "WASM without Emscripten":
https://github.com/schellingb/wajic
This provides an alternative implementation of Emscripten's EM_JS() magic (embed Javascript snippets right in the C/C++ source code), but without the Emscripten SDK. It still needs some additional tools next to Clang, so it sits somewhere between "pure Clang" and "full Emscripten SDK".
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Writing bindings to `dos-like` for Rust: some lessons learned
Alas, although there is WebAssembly support in the original dos-like, it is still not supported in the bindings for Rust. It would require a Rust toolchain to integrate with WAjic, which I am pretty much unfamiliar with. If you have any idea on how to achieve this, I would love to know.
cib
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Compile and execute C++ in browser
[2]: https://tbfleming.github.io/cib/
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Using Firecracker and Go to run short-lived, untrusted code execution jobs
Here are some more ports of LLVM and clang to the browser:
* https://github.com/kripken/llvm-js
* https://github.com/tbfleming/cib
* https://github.com/jprendes/emception
LLVM just does pure computation, really, so it's not hard to port to wasm - much simple than say Python (which has also been ported several times). The only challenges with LLVM are the build system (which has self-execution), working around some issues like clang wanting to open a subprocess, and adding some ifdefs.
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Show HN: How to compile C/C++ for WASM, pure Clang, no libs, no framework
That is half of what I would need for a project, the other half being Clang itself running in the browser (to use for teaching), in theory there is [1] since many years, but in practice it never worked for me (even now I get "Runtime error: memory access out of bounds")
[1] https://tbfleming.github.io/cib/
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Do any Browser Based C Static Code Analysis Tools Exist?
It seems that there's a project doing exactly that: https://github.com/tbfleming/cib
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Rust programming concepts for JavaScript developers
It takes some work (mostly due to LLVM building code to run later in its build system as it goes), but it's very feasible. LLVM has been ported to Wasm (and before that to JS) many times, for example:
https://github.com/jprendes/emception (2021)
https://github.com/tbfleming/cib (2017)
https://github.com/kripken/llvm.js (2012)
I agree it would be great to see this repl running 100% in the browser!
What are some alternatives?
multi-memory - Multiple per-module memories for Wasm
skybison - A fork of Instagram's experimental performance oriented greenfield implementation of Python. It features small objects; a moving GC; hidden classes; bytecode inline caching; type-specialized bytecode; an experimental template JIT.
component-model - Repository for design and specification of the Component Model
clang-wasm - How to build webassembly files with nothing other than standard Clang/llvm.
wefx - Basic WASM graphics package to draw to an HTML Canvas using C. In the style of the gfx library
minimal-zig-wasm-canvas - A minimal example showing how HTML5's canvas, wasm memory and zig can interact.
chip8-book - An introduction to Chip-8 emulation using Rust
v86 - x86 PC emulator and x86-to-wasm JIT, running in the browser
howto-wasm-minimal - How to create minimal wasm module with plain C/C++
dos-like - Engine for making things with a MS-DOS feel, but for modern platforms
emception - Run Emscripten in the browser