From a84e9d803d644becf408945e972b020d82e97317 Mon Sep 17 00:00:00 2001
From: kamilsa <kamilsa16@gmail.com>
Date: Tue, 4 Nov 2025 17:12:05 +0500
Subject: [PATCH 1/3] Adapt c-hash-sig for kagome-crates integration

---
 Cargo.toml |  5 ++---
 build.rs   | 26 +-------------------------
 2 files changed, 3 insertions(+), 28 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index cf9bfd7..7f2a5b4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "pq-bindings-c-rust"
+name = "c_hash_sig_crust"
 version = "0.1.0"
 edition = "2021"
 
@@ -12,5 +12,4 @@ rand = "0.9"
 bincode = { version = "2.0.1", features = ["serde"] }
 
 [build-dependencies]
-cbindgen = "0.27"
-
+build-helper = { path = "../build-helper" }
diff --git a/build.rs b/build.rs
index 2142c4a..36c2f71 100644
--- a/build.rs
+++ b/build.rs
@@ -1,29 +1,5 @@
-extern crate cbindgen;
-
-use std::env;
-use std::fs;
-use std::path::PathBuf;
 
 fn main() {
-    let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
-    let package_name = env::var("CARGO_PKG_NAME").unwrap();
-    
-    // Create include directory in project root
-    let include_dir = PathBuf::from(&crate_dir).join("include");
-    fs::create_dir_all(&include_dir).expect("Unable to create include directory");
-    
-    let output_file = include_dir
-        .join(format!("{}.h", package_name))
-        .display()
-        .to_string();
-
-    cbindgen::Builder::new()
-        .with_crate(crate_dir)
-        .with_language(cbindgen::Language::C)
-        .generate()
-        .expect("Unable to generate bindings")
-        .write_to_file(&output_file);
-
-    println!("cargo:rerun-if-changed=src/lib.rs");
+    build_helper::run_cbindgen();
 }
 

From 8f9f5c3eb4408310850f0a4a381e247571bf5208 Mon Sep 17 00:00:00 2001
From: kamilsa <kamilsa16@gmail.com>
Date: Tue, 4 Nov 2025 17:43:04 +0500
Subject: [PATCH 2/3] Adapt c-hash-sig for kagome-crates integration

---
 Cargo.toml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Cargo.toml b/Cargo.toml
index 7f2a5b4..5cbc7ef 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [lib]
+name = "c_hash_sig_crust"
 crate-type = ["cdylib", "staticlib"]
 
 [dependencies]

From 1e6c8cadf3bfc9b3c62da8732a5b900c21d5b316 Mon Sep 17 00:00:00 2001
From: kamilsa <kamilsa16@gmail.com>
Date: Tue, 4 Nov 2025 18:25:53 +0500
Subject: [PATCH 3/3] Add feature flag for kagome-crates integration and update
 build script

---
 Cargo.toml |  7 ++++++-
 build.rs   | 29 ++++++++++++++++++++++++++++-
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 5cbc7ef..c4fe5ad 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,10 +7,15 @@ edition = "2021"
 name = "c_hash_sig_crust"
 crate-type = ["cdylib", "staticlib"]
 
+[features]
+# Feature flag to enable kagome-crates integration
+kagome-crates = ["build-helper"]
+
 [dependencies]
 hashsig = { git = "https://github.com/b-wagn/hash-sig" }
 rand = "0.9"
 bincode = { version = "2.0.1", features = ["serde"] }
 
 [build-dependencies]
-build-helper = { path = "../build-helper" }
+cbindgen = "0.27"
+build-helper = { path = "../build-helper", optional = true }
diff --git a/build.rs b/build.rs
index 36c2f71..31e3682 100644
--- a/build.rs
+++ b/build.rs
@@ -1,5 +1,32 @@
-
+#[cfg(feature = "kagome-crates")]
 fn main() {
     build_helper::run_cbindgen();
 }
 
+#[cfg(not(feature = "kagome-crates"))]
+fn main() {
+    use std::env;
+    use std::fs;
+    use std::path::PathBuf;
+
+    let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
+    let package_name = env::var("CARGO_PKG_NAME").unwrap();
+    
+    // Create include directory in project root
+    let include_dir = PathBuf::from(&crate_dir).join("include");
+    fs::create_dir_all(&include_dir).expect("Unable to create include directory");
+    
+    let output_file = include_dir
+        .join(format!("{}.h", package_name))
+        .display()
+        .to_string();
+
+    cbindgen::Builder::new()
+        .with_crate(crate_dir)
+        .with_language(cbindgen::Language::C)
+        .generate()
+        .expect("Unable to generate bindings")
+        .write_to_file(&output_file);
+
+    println!("cargo:rerun-if-changed=src/lib.rs");
+}