export new func with ffi

Author: noel2004

coordinator/internal/logic/libzkp/lib.go

@@ -140,3 +140,10 @@ func DumpVk(forkName, filePath string) error {
 
 	return nil
 }
+
+// Set dynamic feature flags that control libzkp runtime behavior
+func SetDynamicFeature(feats string) {
+	cFeats := goToCString(feats)
+	defer freeCString(cFeats)
+	C.set_dynamic_feature(cFeats)
+}

coordinator/internal/logic/libzkp/libzkp.h

@@ -54,4 +54,7 @@ char* gen_wrapped_proof(char* proof_json, char* metadata, char* vk, size_t vk_le
 // Release memory allocated for a string returned by gen_wrapped_proof
 void release_string(char* string_ptr);
 
+void set_dynamic_feature(const char* feats);
+
+
 #endif /* LIBZKP_H */

crates/libzkp/src/lib.rs

@@ -14,6 +14,11 @@ use tasks::chunk_interpreter::{ChunkInterpreter, TryFromWithInterpreter};
 /// global features: use legacy encoding for witness
 pub(crate) static LEGACY_WITNESS_ENCODING: bool = false;
 
+pub fn set_dynamic_feature(feats: &str){
+
+}
+
+
 /// Turn the coordinator's chunk task into a json string for formal chunk proving
 /// task (with full witnesses)
 pub fn checkout_chunk_task(

crates/libzkp_c/src/lib.rs

@@ -249,3 +249,10 @@ pub unsafe extern "C" fn release_string(ptr: *mut c_char) {
         let _ = CString::from_raw(ptr);
     }
 }
+
+/// # Safety
+#[no_mangle]
+pub unsafe extern "C" fn set_dynamic_feature(feats: *const c_char) {
+    let feats_str = c_char_to_str(feats);
+    libzkp::set_dynamic_feature(feats_str);
+}