krun-sys: find libkrun using pkg-config

This enables the use of non-system-wide installations of libkrun by
exporting the right PKG_CONFIG_PATH.

Signed-off-by: Sergio Lopez <[email protected]>

Author: slp

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "krun-sys"
-version = "1.9.1"
+version = "1.10.1"
 edition = "2021"
 rust-version = "1.77.0"
 description = "Rust bindings for libkrun"
@@ -10,6 +10,7 @@ links = "krun"
 
 [build-dependencies]
 bindgen = { version = "0.69.4", default-features = false }
+pkg-config = { version = "0.3", default-features = false }
 
 [features]
 default = []

crates/krun-sys/Cargo.toml

@@ -1,18 +1,27 @@
 use std::env;
 use std::path::PathBuf;
 
-fn main() {
+fn main() -> Result<(), pkg_config::Error> {
     println!("cargo::rerun-if-changed=wrapper.h");
-    println!("cargo::rustc-link-lib=krun");
+
+    let library = pkg_config::probe_library("libkrun")?;
 
     let bindings = bindgen::Builder::default()
-        .header("wrapper.h")
+        .clang_args(
+            library
+                .include_paths
+                .iter()
+                .map(|path| format!("-I{}", path.to_string_lossy())),
+        )
         .clang_arg("-fretain-comments-from-system-headers")
+        .header("wrapper.h")
         .generate()
         .expect("Unable to generate bindings");
 
     let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
     bindings
         .write_to_file(out_path.join("bindings.rs"))
         .expect("Couldn't write bindings!");
+
+    Ok(())
 }