Index: python3.8-3.8.0~b2/Include/pythread.h
===================================================================
--- python3.8-3.8.0~b2.orig/Include/pythread.h
+++ python3.8-3.8.0~b2/Include/pythread.h
@@ -26,7 +26,7 @@ PyAPI_FUNC(unsigned long) PyThread_start
 PyAPI_FUNC(void) _Py_NO_RETURN PyThread_exit_thread(void);
 PyAPI_FUNC(unsigned long) PyThread_get_thread_ident(void);
 
-#if defined(__APPLE__) || defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(_WIN32) || defined(_AIX)
+#if defined(__APPLE__) || defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(_WIN32) || defined(_AIX) || defined(__GNU__)
 #define PY_HAVE_THREAD_NATIVE_ID
 PyAPI_FUNC(unsigned long) PyThread_get_thread_native_id(void);
 #endif
Index: python3.8-3.8.0~b2/Python/thread_pthread.h
===================================================================
--- python3.8-3.8.0~b2.orig/Python/thread_pthread.h
+++ python3.8-3.8.0~b2/Python/thread_pthread.h
@@ -22,6 +22,9 @@
 #   include <sys/thread.h>      /* thread_self() */
 #elif defined(__NetBSD__)
 #   include <lwp.h>             /* _lwp_self() */
+#elif defined(__GNU__)
+#   include <mach.h>            /* mach_thread_self(), mach_task_self(),
+                                   mach_port_deallocate() */
 #endif
 
 /* The POSIX spec requires that use of pthread_attr_setstacksize
@@ -338,6 +341,10 @@ PyThread_get_thread_native_id(void)
 #elif defined(__NetBSD__)
     lwpid_t native_id;
     native_id = _lwp_self();
+#elif defined(__GNU__)
+    mach_port_t native_id;
+    native_id = mach_thread_self();
+    mach_port_deallocate(mach_task_self(), mach_thread_self());
 #endif
     return (unsigned long) native_id;
 }