feat(codspeed): add instrument-hooks

Author: not-matthias

.gitmodules

@@ -2,3 +2,6 @@
 [submodule "crates/divan_compat/examples/src/the_algorithms/Rust"]
 	path = crates/divan_compat/examples/src/the_algorithms/Rust
 	url = https://github.com/TheAlgorithms/Rust.git
+[submodule "crates/codspeed/instrument-hooks"]
+	path = crates/codspeed/instrument-hooks
+	url = https://github.com/CodSpeedHQ/instrument-hooks

Cargo.lock

@@ -35,3 +35,7 @@ harness = false
 
 [dev-dependencies]
 tempfile = { workspace = true }
+
+[build-dependencies]
+bindgen = "0.72.1"
+cc = "1.0"

crates/codspeed/Cargo.toml

@@ -0,0 +1,23 @@
+use std::{env, path::PathBuf};
+
+fn main() {
+    // Compile the C library
+    cc::Build::new()
+        .file("instrument-hooks/dist/core.c")
+        .include("instrument-hooks/includes")
+        .compile("instrument_hooks");
+
+    let bindings = bindgen::Builder::default()
+        .header("instrument-hooks/includes/core.h")
+        // Tell cargo to invalidate the built crate whenever any of the
+        // included header files changed.
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
+        .generate()
+        .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!");
+}