Are there plans for Rust bindings? #6788
Comments
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If you want the Binaryen C API specifically then rust-bindgen should be able to automatically generate them, I think. See also https://github.com/brson/wasm-opt-rs , though I think that might be higher-level bindings for the |
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Thanks @kripken for the rust-bindgen tip. I am new to WASM and still fresh with Rust and writing programming languages, so I would have liked something done by someone with more experience. But I guess if no-one is going to do it, I am going to give it a go. |
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I have an old private repository with a binaryen.js port to Rust, using a lot of code from binaryen-rs. I'm not intent on publishing it, but I can show you a few useful files: build.rsuse std::env;
fn main() {
let target = env::var("TARGET").unwrap();
let mut config = cmake::Config::new("binaryen");
config
.define("ARCH", "native")
.define("BUILD_STATIC_LIB", "ON")
.define("ENABLE_WERROR", "OFF");
if target.contains("windows") {
config.build_target("ALL_BUILD")
} else {
config.build_target("all")
};
let dst = config.build();
println!("cargo:rustc-link-search=native={}/build/lib", dst.display());
println!("cargo:rustc-link-lib=static=binaryen");
let lib = if target.contains("msvc") {
None
} else if target.contains("darwin") {
Some("c++".to_string())
} else if target.contains("freebsd") {
Some("c++".to_string())
} else if target.contains("musl") {
Some("static=stdc++".to_string())
} else {
Some("stdc++".to_string())
};
if let Some(lib) = lib {
println!("cargo:rustc-link-lib={}", lib);
}
}bindgen.rs#[cfg(feature = "bindgen")]
fn main() {
use std::path::PathBuf;
let bindings = bindgen::Builder::default()
.header("binaryen/src/binaryen-c.h")
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
.generate()
.expect("Unable to generate bindings");
let out_path = PathBuf::from(FILE_PATH);
bindings
.write_to_file(out_path)
.expect("Couldn't write bindings!");
}Not sure how well these work now, but they could be useful to you. |
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Thanks @romdotdog I will give it a try |
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@romdotdog @kripken The problem as soon as I try to use the binded types, as when uncommenting the test in https://github.com/clacladev/binaryen-rust/blob/dev/src/lib.rs it crashes with: I am not expert in this FFI Rust stuff. Can you help me on this? |
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Your code works for me. Make sure you're using clang. |
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I am not qualified to write rust bindings for the C apis. But I want to write my language AST to WebAssembly and Binaryen seemed perfect for it.
There is the binaryen-rs v0.6 project which had bindings, but it's 6 years old. Since then, the author removed them and focused on the optimisation parts of binaryen.
Is there any plan to write them?
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