Method build

crates/cuda_builder/src/lib.rs:299–308

Runs rustc to build the codegen and codegens the gpu crate, returning the path of the final ptx file. If [`ptx_file_copy_path`](Self::ptx_file_copy_path) is set, this returns the copied path.

(self)

    /// Runs rustc to build the codegen and codegens the gpu crate, returning the path of the final
    /// ptx file. If [`ptx_file_copy_path`](Self::ptx_file_copy_path) is set, this returns the copied path.
    pub fn build(self) -> Result<PathBuf, CudaBuilderError> {
        println!("cargo:rerun-if-changed={}", self.path_to_crate.display());
        let path = invoke_rustc(&self)?;
        if let Some(copy_path) = self.ptx_file_copy_path {
            std::fs::copy(path, &copy_path).map_err(CudaBuilderError::FailedToCopyPtxFile)?;
            Ok(copy_path)
        } else {
            Ok(path)
        }
    }
}

// https://github.com/rust-lang/cargo/blob/1857880b5124580c4aeb4e8bc5f1198f491d61b1/src/cargo/util/paths.rs#L29-L52