diff --git a/ets2panda/BUILD.gn b/ets2panda/BUILD.gn
index 74fd1e251f035b53bd0d9164fe79d13a94301785..dc95bac79ac2b55eb8d81d4bed9bdcb558a24adf 100644
--- a/ets2panda/BUILD.gn
+++ b/ets2panda/BUILD.gn
@@ -1137,17 +1137,6 @@ config("libes2panda_config") {
     "-fexceptions",
     "-Werror=shadow",
   ]
-
-  if (!is_debug) {
-    cflags_cc += [
-      "-flto=thin",
-      "-O3",
-    ]
-    ldflags = [
-      "-flto=thin",
-      "-O3",
-    ]
-  }
 }
 
 if ((defined(ark_standalone_build) && ark_standalone_build) ||
@@ -1248,7 +1237,6 @@ ohos_source_set("libes2panda_frontend_static") {
 }
 
 ohos_shared_library("libes2panda_public") {
-  configs = [ ":libes2panda_config" ]
   deps = [ ":libes2panda_public_frontend_static" ]
   if (is_mingw || is_win) {
     output_extension = "dll"
diff --git a/ets2panda/aot/BUILD.gn b/ets2panda/aot/BUILD.gn
index a861d7d1a4751dc7daa6d89d5dceff79f7fda1e0..55f5f3e98d6100c3bdcf6e7ecf99ae3ec4c8c81c 100644
--- a/ets2panda/aot/BUILD.gn
+++ b/ets2panda/aot/BUILD.gn
@@ -53,8 +53,7 @@ ohos_executable("ets2panda") {
   }
 
   configs += [
-    "$ark_es2panda_root:libes2panda_public_config",
-    "$ark_es2panda_root:libes2panda_config",
+    "$ark_es2panda_root:libes2panda_public_config"
   ]
 
   deps = [
diff --git a/ets2panda/es2panda.cpp b/ets2panda/es2panda.cpp
index 52aaeb6f0c901462b64538b1d56a372a02b36ffc..b2b63e0635fceb402425dc6bd9e747c1ccb65e5b 100644
--- a/ets2panda/es2panda.cpp
+++ b/ets2panda/es2panda.cpp
@@ -139,5 +139,5 @@ void Compiler::DumpAsm(const pandasm::Program *prog)
 }
 
 // When compiling multi thread, this is need by each thread indenpengdentlt
-util::DiagnosticEngine *g_diagnosticEngine = nullptr;
+thread_local util::DiagnosticEngine *g_diagnosticEngine = nullptr;
 }  // namespace ark::es2panda
diff --git a/ets2panda/es2panda.h b/ets2panda/es2panda.h
index b7e93a6cbdfdccd79d8f1575898297d78211e8cb..1f5a0aafc4ab0388f7a7066add558876f47c1c25 100644
--- a/ets2panda/es2panda.h
+++ b/ets2panda/es2panda.h
@@ -141,7 +141,7 @@ private:
 
 // g_diagnosticEngine used only for flush diagnostic before unexpected process termination:
 // - inside SIGSEGV handler
-extern util::DiagnosticEngine *g_diagnosticEngine;
+thread_local extern util::DiagnosticEngine *g_diagnosticEngine;
 }  // namespace ark::es2panda
 
 #endif