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https://github.com/mewz-project/wasker
WebAssembly AoT compiler for your favorite Operating System
https://github.com/mewz-project/wasker
compiler llvm rust wasm webassembly
Last synced: 4 days ago
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WebAssembly AoT compiler for your favorite Operating System
- Host: GitHub
- URL: https://github.com/mewz-project/wasker
- Owner: mewz-project
- License: other
- Created: 2023-12-28T05:38:49.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2024-10-01T07:33:58.000Z (4 months ago)
- Last Synced: 2025-01-22T16:02:25.164Z (11 days ago)
- Topics: compiler, llvm, rust, wasm, webassembly
- Language: WebAssembly
- Homepage:
- Size: 1.08 MB
- Stars: 269
- Watchers: 4
- Forks: 17
- Open Issues: 19
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
[](https://github.com/mewz-project/wasker/actions/workflows/ci.yaml)
# Wasker
Wasker is a WebAssembly compiler.
Wasker compiles Wasm binary into ELF format binary.
Currently, Wasker supports WASI preview 1.
## What's new with Wasker
There are already software tools that compile Wasm to native binaries.
What's new with Wasker is, Wasker generates an **OS-independent** ELF file where WASI calls from Wasm applications remain **unresolved**.
This unresolved feature allows Wasker's output ELF file to be **linked with WASI implementations provided by various operating systems**, enabling each OS to execute Wasm applications.
Wasker empowers your favorite OS to serve as a Wasm runtime!
# Quick Start
## Step1: Install Wasker
```
curl -sSfL https://github.com/mewz-project/wasker/releases/download/v0.1.1/wasker-0.1.1-linux-$(uname -m)-gnu.tar.gz | tar -xzvC /usr/bin/ wasker
```
## Step2: Create Wasm binary
Create any Wasm binary.
### example1
Please refer [examples](./examples) for building Wasm from Rust and Go.
```
git clone https://github.com/mewz-project/wasker.git
cd examples/rust
rustup target add wasm32-wasi
cargo build --target wasm32-wasi
```
### example2
We also provide a pre-build simple Wasm binary.
```
git clone https://github.com/mewz-project/wasker.git
ls helloworld.wat
```
## Step3: Run Wasker to compile Wasm
### example1
```
$ wasker examples/rust/target/wasm32-wasi/debug/rust.wasm
[2024-03-19T12:10:20Z INFO wasker::compiler] input: examples/rust/target/wasm32-wasi/debug/rust.wasm
[2024-03-19T12:10:20Z INFO wasker::compiler] write to ./wasm.ll
[2024-03-19T12:10:20Z INFO wasker::compiler] write to ./wasm.o, it may take a while
[2024-03-19T12:10:21Z INFO wasker::compiler] Compile success
```
### example2
```
wasker helloworld.wat
```
## Step4: Run compiled Wasm
ELF file generated by Wasker is OS-independent: WASI calls from Wasm applications remain unresolved.
Please write your own WASI wrapper for your favorite OS to be linked with Wasker output.
Here, we'll show a [tiny example](./examples/wasi-wrapper/c/wasi-wrapper-linux.c) of running Wasker output on Linux.
Link Wasker output and WASI wapper for Linux
```
gcc -no-pie ./examples/wasi-wrapper/c/wasi-wrapper-linux.c ./wasm.o -o hello
```
Run!!
```
./hello
```
Also please check [Mewz](https://github.com/Mewz-project/Mewz.git), a unikernel OS which has WASI interface.
ELF file generated by Wasker can be executed on Mewz without any modification.
# Development
Wasker compiler is based on LLVM (LLVM 15 currently).
## Option1 : Use Devcontainer
You can try Wasker on browser via Devcontainer.
## Option2 : Build from source
The `wasker` binary distributed in Quick Start is dynamically linked with GNU libc (support for musl is planned for the future).
If pre-build binaries don't work on your system, please build from source.
### Clone repository
```
git clone [email protected]:mewz-project/wasker.git
cd Wasker
```
### Install LLVM locally
The commands are a little different because you need an LLVM binary built for your architecture.
#### AMD64
```
mkdir -p dependencies/llvm
wget https://github.com/llvm/llvm-project/releases/download/llvmorg-15.0.0/clang+llvm-15.0.0-x86_64-linux-gnu-rhel-8.4.tar.xz -O /tmp/llvm-15.0.0.tar.xz
tar -xvf /tmp/llvm-15.0.0.tar.xz -C dependencies/llvm
export LLVM_SYS_150_PREFIX=$PWD/dependencies/llvm/clang+llvm-15.0.0-x86_64-linux-gnu-rhel-8.4
```
#### AArch64
```
mkdir -p dependencies/llvm
wget https://github.com/llvm/llvm-project/releases/download/llvmorg-15.0.0/clang+llvm-15.0.0-aarch64-linux-gnu.tar.xz -O /tmp/llvm-15.0.0.tar.xz
tar -xvf /tmp/llvm-15.0.0.tar.xz -C dependencies/llvm
export LLVM_SYS_150_PREFIX=$PWD/dependencies/llvm/clang+llvm-15.0.0-aarch64-linux-gnu
```
### Run Wasker
```
cargo run helloworld.wat
```