--- src/common/system_utils.cpp.orig	2025-11-04 00:40:17.000000000 +0800
+++ src/common/system_utils.cpp	2025-11-04 00:40:39.000000000 +0800
@@ -17,7 +17,6 @@
 #endif
 
 #if defined(ANGLE_PLATFORM_APPLE)
-#    include <dispatch/dispatch.h>
 #    include <pthread.h>
 #endif
 
@@ -248,11 +247,15 @@
 {
     static std::atomic<uint64_t> globalThreadSerial;
     static pthread_key_t tlsIndex;
-    static dispatch_once_t once;
-    dispatch_once(&once, ^{
+    static pthread_once_t once = PTHREAD_ONCE_INIT;
+
+    auto initKey = []() {
       auto result = pthread_key_create(&tlsIndex, nullptr);
       ASSERT(result == 0);
-    });
+    };
+
+    pthread_once(&once, +initKey);
+
     void *tlsValue = pthread_getspecific(tlsIndex);
     if (ANGLE_UNLIKELY(tlsValue == nullptr))
     {