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#[cfg(feature = "regen")]
fn generate_bindings() {
use std::env;
use std::path::PathBuf;
// Tell cargo to invalidate the built crate whenever the wrapper changes
println!("cargo:rerun-if-changed=include/wrapper.h");
// This might require to correctly setup the PKG_CONFIG_PATH env variable
// e.g., export PKG_CONFIG_PATH="<my_custom_ossl_path>/lib/pkgconfig:$PKG_CONFIG_PATH"
let openssl = pkg_config::probe_library("openssl").unwrap();
// The bindgen::Builder is the main entry point
// to bindgen, and lets you build up options for
// the resulting bindings.
let bindings = bindgen::Builder::default()
.clang_args(
openssl
.include_paths
.iter()
.map(|path| format!("-isystem{}", path.to_string_lossy())),
)
// The input header we would like to generate
// bindings for.
.header("include/wrapper.h")
// Tell cargo to invalidate the built crate whenever any of the
// included header files changed.
.parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
// Generate string constants as Cstrs instead of u8 arrays
.generate_cstr(true)
// Finish the builder and generate the bindings.
.generate()
// Unwrap the Result and panic on failure.
.expect("Unable to generate bindings");
// Write the bindings to the $OUT_DIR/bindings.rs file.
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}
fn main() {
// Tell cargo to look for shared libraries in the specified directory
//println!("cargo:rustc-link-search=/path/to/lib");
// Tell cargo to tell rustc to link the system bzip2
// shared library.
//println!("cargo:rustc-link-lib=bz2");
#[cfg(feature = "regen")]
generate_bindings()
}