Index: lib/libthr/thread/thr_clean.c
===================================================================
--- lib/libthr/thread/thr_clean.c
+++ lib/libthr/thread/thr_clean.c
@@ -49,6 +49,10 @@
 __weak_reference(_pthread_cleanup_push, pthread_cleanup_push);
 __weak_reference(_pthread_cleanup_pop, pthread_cleanup_pop);
 
+/* help static linking when libc symbols have preference */
+__weak_reference(__pthread_cleanup_push_imp, __pthread_cleanup_push_imp1);
+__weak_reference(__pthread_cleanup_pop_imp, __pthread_cleanup_pop_imp1);
+
 void
 __pthread_cleanup_push_imp(void (*routine)(void *), void *arg,
 	struct _pthread_cleanup_info *info)
Index: lib/libthr/thread/thr_init.c
===================================================================
--- lib/libthr/thread/thr_init.c
+++ lib/libthr/thread/thr_init.c
@@ -202,6 +202,12 @@
 #define	DUAL_ENTRY(entry)	\
 	(pthread_func_t)entry, (pthread_func_t)entry
 
+void __pthread_cleanup_push_imp1(void (*)(void *), void *,
+    struct _pthread_cleanup_info *);
+void __pthread_cleanup_pop_imp1(int);
+void _thr_cancel_enter(struct pthread *);
+void _thr_cancel_leave(struct pthread *, int);
+
 static pthread_func_t jmp_table[][2] = {
 	{DUAL_ENTRY(_pthread_atfork)},	/* PJT_ATFORK */
 	{DUAL_ENTRY(_pthread_attr_destroy)},	/* PJT_ATTR_DESTROY */
@@ -236,7 +242,7 @@
 	{DUAL_ENTRY(_pthread_equal)},	/* PJT_EQUAL */
 	{DUAL_ENTRY(_pthread_exit)},	/* PJT_EXIT */
 	{DUAL_ENTRY(_pthread_getspecific)},	/* PJT_GETSPECIFIC */
-	{DUAL_ENTRY(_pthread_join)},	/* PJT_JOIN */
+	{DUAL_ENTRY(_thr_join)},		/* PJT_JOIN */
 	{DUAL_ENTRY(_pthread_key_create)},	/* PJT_KEY_CREATE */
 	{DUAL_ENTRY(_pthread_key_delete)},	/* PJT_KEY_DELETE*/
 	{DUAL_ENTRY(_pthread_kill)},	/* PJT_KILL */
@@ -265,10 +271,10 @@
 	{DUAL_ENTRY(_pthread_setspecific)},	/* PJT_SETSPECIFIC */
 	{DUAL_ENTRY(_pthread_sigmask)},		/* PJT_SIGMASK */
 	{DUAL_ENTRY(_pthread_testcancel)},	/* PJT_TESTCANCEL */
-	{DUAL_ENTRY(__pthread_cleanup_pop_imp)},/* PJT_CLEANUP_POP_IMP */
-	{DUAL_ENTRY(__pthread_cleanup_push_imp)},/* PJT_CLEANUP_PUSH_IMP */
-	{DUAL_ENTRY(_pthread_cancel_enter)},	/* PJT_CANCEL_ENTER */
-	{DUAL_ENTRY(_pthread_cancel_leave)},	/* PJT_CANCEL_LEAVE */
+	{DUAL_ENTRY(__pthread_cleanup_pop_imp1)},/* PJT_CLEANUP_POP_IMP */
+	{DUAL_ENTRY(__pthread_cleanup_push_imp1)},/* PJT_CLEANUP_PUSH_IMP */
+	{DUAL_ENTRY(_thr_cancel_enter)},	/* PJT_CANCEL_ENTER */
+	{DUAL_ENTRY(_thr_cancel_leave)},	/* PJT_CANCEL_LEAVE */
 	{DUAL_ENTRY(_pthread_mutex_consistent)},/* PJT_MUTEX_CONSISTENT */
 	{DUAL_ENTRY(_pthread_mutexattr_getrobust)},/* PJT_MUTEXATTR_GETROBUST */
 	{DUAL_ENTRY(_pthread_mutexattr_setrobust)},/* PJT_MUTEXATTR_SETROBUST */
Index: lib/libthr/thread/thr_join.c
===================================================================
--- lib/libthr/thread/thr_join.c
+++ lib/libthr/thread/thr_join.c
@@ -40,7 +40,8 @@
 	const struct timespec *abstime);
 static int join_common(pthread_t, void **, const struct timespec *);
 
-__weak_reference(_pthread_join, pthread_join);
+__weak_reference(_thr_join, pthread_join);
+__weak_reference(_thr_join, _pthread_join);
 __weak_reference(_pthread_timedjoin_np, pthread_timedjoin_np);
 
 static void backout_join(void *arg)
@@ -54,7 +55,7 @@
 }
 
 int
-_pthread_join(pthread_t pthread, void **thread_return)
+_thr_join(pthread_t pthread, void **thread_return)
 {
 	return (join_common(pthread, thread_return, NULL));
 }
Index: lib/libthr/thread/thr_private.h
===================================================================
--- lib/libthr/thread/thr_private.h
+++ lib/libthr/thread/thr_private.h
@@ -1013,6 +1013,8 @@
 void __thr_malloc_prefork(struct pthread *curthread);
 void __thr_malloc_postfork(struct pthread *curthread);
 
+int _thr_join(pthread_t, void **);
+
 __END_DECLS
 __NULLABILITY_PRAGMA_POP