pyo3-builtSimple macro to expose metadata obtained with the built
crate as a PyDict
Add the following to your Cargo.toml manifest:
toml
[build-dependencies]
built = "^0.3"
[dependencies]
pyo3-built = "^0.1"
Create your build.rs as you normally would with built, but activate
dependencies metadata as well:
```rust
//! build.rs
extern crate built;
fn main() { let src = std::env::var("CARGOMANIFESTDIR").unwrap(); let dst = std::path::Path::new(&std::env::var("OUTDIR").unwrap()).join("built.rs"); let mut opts = built::Options::default(); opts.setdependencies(true) .setcompiler(true) .setenv(true); built::writebuiltfilewithopts(&opts, src, dst) .expect("Failed to acquire build-time information"); } ```
Then, include the generated file anywhere in a dedicated module in your Python
extension, and use the pyo3_built! macro to generate the PyDict:
```rust
//! lib.rs
extern crate pyo3_built; extern crate pyo3;
use pyo3::prelude::*;
mod build { include!(concat!(env!("OUT_DIR"), "/built.rs")); }
/// Module documentation string
fn init(py: Python, m: &PyModule) -> PyResult<()> { // ... // m.add("build", pyo3_built!(py, build))?; Ok(()) } ```
That's it ! After compiling your extension module, the __build__ attribute
will contain the following metadata:
```python
import mymodule mymodule.build { "build-time": datetime.datetime(2018, 5, 11, 16, 43, 28), "debug": true, "dependencies": { ... "pyo3": "0.6.0", "pyo3-built": "0.1.0", "pyo3cls": "0.6.0", ... }, "features": [ "PYO3" ], "host": { "triple": "x8664-unknown-linux-gnu" }, "opt-level": "0", "rustc": "rustc", "rustc-version": "rustc 1.27.0-nightly (acd3871ba 2018-05-10)", "target": { "arch": "x8664", "endianness": "little", "env": "gnu", "family": "unix", "os": "linux", "pointer-width": "64", "profile": "debug", "triple": "x86_64-unknown-linux-gnu" } } ```