0eb73977ef
This will come in handy later, when we integrate harmonia. It is a very stable thing to do.
57 lines
1.7 KiB
Rust
57 lines
1.7 KiB
Rust
use std::path::PathBuf;
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#[derive(Debug)]
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struct StripNixPrefix;
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impl bindgen::callbacks::ParseCallbacks for StripNixPrefix {
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fn item_name(&self, name: &str) -> Option<String> {
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name.strip_prefix("nix_").map(String::from)
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}
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}
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#[derive(Debug)]
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struct AddZerocopyDerives {}
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impl bindgen::callbacks::ParseCallbacks for AddZerocopyDerives {
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fn add_derives(&self, info: &bindgen::callbacks::DeriveInfo<'_>) -> Vec<String> {
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if info.name == "store_path_hash_part" {
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vec![
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"zerocopy::FromBytes".to_string(),
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"zerocopy::IntoBytes".to_string(),
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"zerocopy::Immutable".to_string(),
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]
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} else {
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vec![]
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}
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}
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}
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fn main() {
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println!("cargo:rerun-if-changed=include/nix-c-store.h");
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println!("cargo:rustc-link-lib=nixstorec");
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let mut args = Vec::new();
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for path in pkg_config::probe_library("nix-store-c")
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.unwrap()
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.include_paths
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.iter()
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{
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args.push(format!("-I{}", path.to_str().unwrap()));
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}
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let out_path = PathBuf::from(std::env::var("OUT_DIR").unwrap());
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let bindings = bindgen::Builder::default()
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.header("include/nix-c-store.h")
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.clang_args(args)
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.parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
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.parse_callbacks(Box::new(StripNixPrefix))
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.parse_callbacks(Box::new(AddZerocopyDerives {}))
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// Blocklist symbols from nix-bindings-util-sys
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.blocklist_file(".*nix_api_util\\.h")
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.generate()
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.expect("Unable to generate bindings");
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bindings
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.write_to_file(out_path.join("bindings.rs"))
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.expect("Couldn't write bindings!");
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}
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