f533df029c
Wasmtime documentation says stable is the supported rustc version, and that's what we test with CI, so the badge should reflect that. Wasmtime doesn't even build with 1.37 any longer anyway.
126 lines
4.6 KiB
Markdown
126 lines
4.6 KiB
Markdown
<div align="center">
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<h1><code>wasmtime</code></h1>
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<p>
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<strong>A standalone runtime for
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<a href="https://webassembly.org/">WebAssembly</a></strong>
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</p>
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<strong>A <a href="https://bytecodealliance.org/">Bytecode Alliance</a> project</strong>
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<p>
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<a href="https://github.com/bytecodealliance/wasmtime/actions?query=workflow%3ACI"><img src="https://github.com/bytecodealliance/wasmtime/workflows/CI/badge.svg" alt="build status" /></a>
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<a href="https://bytecodealliance.zulipchat.com/#narrow/stream/217126-wasmtime"><img src="https://img.shields.io/badge/zulip-join_chat-brightgreen.svg" alt="zulip chat" /></a>
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<img src="https://img.shields.io/badge/rustc-stable+-green.svg" alt="supported rustc stable" />
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<a href="https://docs.rs/wasmtime"><img src="https://docs.rs/wasmtime/badge.svg" alt="Documentation Status" /></a>
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</p>
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<h3>
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<a href="https://bytecodealliance.github.io/wasmtime/">Guide</a>
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<span> | </span>
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<a href="https://bytecodealliance.github.io/wasmtime/contributing.html">Contributing</a>
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<span> | </span>
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<a href="https://wasmtime.dev/">Website</a>
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<span> | </span>
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<a href="https://bytecodealliance.zulipchat.com/#narrow/stream/217126-wasmtime">Chat</a>
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</h3>
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</div>
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## Installation
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The Wasmtime CLI can be installed on Linux and macOS with a small install
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script:
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```sh
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$ curl https://wasmtime.dev/install.sh -sSf | bash
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```
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Windows or otherwise interested users can download installers and
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binaries directly from the [GitHub
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Releases](https://github.com/bytecodealliance/wasmtime/releases) page.
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## Example
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If you've got the [Rust compiler
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installed](https://www.rust-lang.org/tools/install) then you can take some Rust
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source code:
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```rust
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fn main() {
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println!("Hello, world!");
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}
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```
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and compile/run it with:
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```sh
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$ rustup target add wasm32-wasi
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$ rustc hello.rs --target wasm32-wasi
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$ wasmtime hello.wasm
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Hello, world!
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```
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## Features
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* **Lightweight**. Wasmtime is a standalone runtime for WebAssembly that scales
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with your needs. It fits on tiny chips as well as makes use of huge servers.
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Wasmtime can be [embedded] into almost any application too.
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* **Fast**. Wasmtime is built on the optimizing [Cranelift] code generator to
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quickly generate high-quality machine code at runtime.
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* **Configurable**. Whether you need to precompile your wasm ahead of time,
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generate code blazingly fast with Lightbeam, or interpret it at runtime,
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Wasmtime has you covered for all your wasm-executing needs.
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* **WASI**. Wasmtime supports a rich set of APIs for interacting with the host
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environment through the [WASI standard](https://wasi.dev).
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* **Standards Compliant**. Wasmtime passes the [official WebAssembly test
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suite](https://github.com/WebAssembly/testsuite), implements the [official C
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API of wasm](https://github.com/WebAssembly/wasm-c-api), and implements
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[future proposals to WebAssembly](https://github.com/WebAssembly/proposals) as
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well. Wasmtime developers are intimately engaged with the WebAssembly
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standards process all along the way too.
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[Cranelift]: https://github.com/bytecodealliance/wasmtime/blob/main/cranelift/README.md
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[embedded]: https://bytecodealliance.github.io/wasmtime/lang.html
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## Language Support
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You can use Wasmtime from a variety of different languages through embeddings of
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the implementation:
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* **[Rust]** - the [`wasmtime` crate]
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* **[C]** - the [`wasm.h`, `wasi.h`, and `wasmtime.h` headers][c-headers]
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* **[Python]** - the [`wasmtime` PyPI package]
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* **[.NET]** - the [`Wasmtime` NuGet package]
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* **[Go]** - the [`wasmtime-go` repository]
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[Rust]: https://bytecodealliance.github.io/wasmtime/lang-rust.html
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[C]: https://bytecodealliance.github.io/wasmtime/examples-c-embed.html
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[`wasmtime` crate]: https://crates.io/crates/wasmtime
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[c-headers]: https://bytecodealliance.github.io/wasmtime/c-api/
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[Python]: https://bytecodealliance.github.io/wasmtime/lang-python.html
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[`wasmtime` PyPI package]: https://pypi.org/project/wasmtime/
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[.NET]: https://bytecodealliance.github.io/wasmtime/lang-dotnet.html
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[`Wasmtime` NuGet package]: https://www.nuget.org/packages/Wasmtime
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[Go]: https://bytecodealliance.github.io/wasmtime/lang-go.html
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[`wasmtime-go` repository]: https://pkg.go.dev/github.com/bytecodealliance/wasmtime-go
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## Documentation
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[📚 Read the Wasmtime guide here! 📚][guide]
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The [wasmtime guide][guide] is the best starting point to learn about what
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Wasmtime can do for you or help answer your questions about Wasmtime. If you're
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curious in contributing to Wasmtime, [it can also help you do
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that][contributing]!
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[contributing]: https://bytecodealliance.github.io/wasmtime/contributing.html
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[guide]: https://bytecodealliance.github.io/wasmtime
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---
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It's Wasmtime.
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