[update] support armclang and c++11.

components/cplusplus/cpp11/thread_local_impl.cpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-04-27     flybreak     the first version.
+ */
+
+#include <pthread.h>
+#include <cstdlib>
+
+typedef void (*destructor) (void *);
+
+extern "C"
+int __cxa_thread_atexit_impl(destructor dtor, void* obj, void* dso_symbol)
+{
+    pthread_key_t key_tmp;
+    if (pthread_key_create(&key_tmp, dtor) != 0)
+        abort();
+    pthread_setspecific(key_tmp, obj);
+    return 0;
+}
+
+#if defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/
+#include <cxxabi.h>
+
+extern"C"
+int __cxxabiv1::__cxa_thread_atexit(destructor dtor, void *obj, void *dso_handle)
+{
+    return __cxa_thread_atexit_impl(dtor, obj, dso_handle);
+}
+#endif