wrap_static_fns is missing from bindgen::Builder

Hi, I think I'm going crazy, I have been trying to use an external C library in my Rust program without success.
The C library is uhubctl, source code is here https://github.com/mvp/uhubctl/tree/master

As you can see most of the important functions are declared as static functions, for instance

static int usb_find_hubs(void)

And I need to expose them to my Rust program.

After struggling for a while, I realise that the bindings.rs file generated by Bindgen doesn't contain anything, and I also realised that I need the wrap_static_fns flag. Allegedly it should be a method in bindgen::Builder.

However, my VSCode keeps saying that the method is not found, and cargo build gives the same result.

error[E0599]: no method named `wrap_static_fns` found for struct `bindgen::Builder` in the current scope

If I run the command line version

bindgen libs/uhubctl.h -o src/bindings.rs -- -I//opt/homebrew/Cellar/libusb/1.0.27/include/libusb-1.0 -DPROGRAM_VERSION=\"2.6.0\" --wrap-static-fns

I get

panicked at /Users/hoang.bui/.cargo/registry/src/index.crates.io-6f17d22bba15001f/bindgen-cli-0.70.1/main.rs:45:36:
Unable to generate bindings: ClangDiagnostic("error: unsupported option '--wrap-static-fns'\n")

I am also a total beginner in Rust so I'm completely lost.

I am on macOS Sonoma 14.6.1,
rustc 1.82.0
bindgen 0.70.1

Here is my build.rs

/* File: build.rs */
extern crate bindgen;
extern crate cc;
use std::path::PathBuf;

fn main() {
    // Tell cargo to invalidate the built crate whenever the wrapper changes
    println!("cargo:rerun-if-changed=libs/uhubctl.c");

    let libusb_header_path_flag = "-I/opt/homebrew/Cellar/libusb/1.0.27/include/libusb-1.0";
    let uhubctl_version_flag = "-DPROGRAM_VERSION=\"2.6.0\"";
    
    let bindings = bindgen::Builder::default()
        // The input header we would like to generate bindings for.
        .header("libs/uhubctl.h")
        .wrap_static_fns(true)
        .clang_arg(libusb_header_path_flag)
        .clang_arg(uhubctl_version_flag)
        // Tell cargo to invalidate the built crate whenever any of the
        // included header files changed.
        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
        // Finish the builder and generate the bindings.
        .generate()
        .expect("Unable to generate bindings");

    // Write the bindings to the src/bindings.rs file.
    let out_path = PathBuf::from("src");
    bindings
        .write_to_file(out_path.join("bindings.rs"))
        .expect("Couldn't write bindings!");

    // Build static library
    cc::Build::new()
        .file("libs/uhubctl.c")
        .flag(libusb_header_path_flag)
        .flag(uhubctl_version_flag)
        .compile("uhubctl.a");
}

Any help would be much appreciated!

Start with build.rs, the bindgen::Builder call, and the bindgen 0.70.1 command-line invocation shown in the issue. Compare the available Builder methods and CLI options with the documented static-function wrapping behavior, using libs/uhubctl.h and the reported diagnostics; done means the supported usage or API discrepancy is clearly established.