//! bindgen configuration for librpm-sys
//!
//! For more on using librpm, see "Chapter 15. Programming RPM with C" from the
//! Fedora RPM Guide (Draft 0.1):
//!
//! https://docs.fedoraproject.org/en-US/Fedora_Draft_Documentation/0.1/html/RPM_Guide/ch-programming-c.html

extern crate bindgen;

use bindgen::Builder;
use std::env;
use std::path::PathBuf;

/// Bind to librpm.so + librpmio.so
fn main() {
    // Link with librpm.so + librpmio.so
    //
    // See "Table 16-3: Required rpm libraries" from the "Compiling and Linking
    // RPM Programs" section of "Programming RPM with C" (see above).
    //
    // We don't yet link against librpmbuild.so or librpmsign.so because bindgen
    // is having trouble generating bindings for these libraries. See
    // `librpm.hpp` for more information.
    println!("cargo:rustc-link-lib=rpm");
    println!("cargo:rustc-link-lib=rpmio");

    // TODO: whitelist types and functions we actually use
    let builder = Builder::default()
        .header("include/librpm.hpp")
        .blacklist_type("timex");

    // Write generated bindings to OUT_DIR (to be included in the crate)
    let output_path = PathBuf::from(env::var("OUT_DIR").unwrap()).join("binding.rs");

    builder
        .generate()
        .unwrap()
        .write_to_file(output_path)
        .unwrap();
}