Move back to pyport.h

Author: ZeroIntensity

Include/pyport.h

@@ -511,6 +511,17 @@ extern "C" {
 #ifdef WITH_THREAD
 // HAVE_THREAD_LOCAL is just defined here for compatibility's sake
 #  define HAVE_THREAD_LOCAL 1
+#  ifdef thread_local
+#    define _Py_thread_local thread_local
+#  elif __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_THREADS__)
+#    define _Py_thread_local _Thread_local
+#  elif defined(_MSC_VER)  /* AKA NT_THREADS */
+#    define _Py_thread_local __declspec(thread)
+#  elif defined(__GNUC__)  /* includes clang */
+#    define _Py_thread_local __thread
+#  else
+#    error "no supported thread-local variable storage classifier"
+#  endif
 #endif
 
 #if defined(__ANDROID__) || defined(__VXWORKS__)