Index: head/lib/libthr/arch/aarch64/include/pthread_md.h
===================================================================
--- head/lib/libthr/arch/aarch64/include/pthread_md.h
+++ head/lib/libthr/arch/aarch64/include/pthread_md.h
@@ -72,8 +72,6 @@
 	return (tcb);
 }
 
-extern struct pthread *_thr_initial;
-
 static __inline struct pthread *
 _get_curthread(void)
 {
Index: head/lib/libthr/arch/arm/include/pthread_md.h
===================================================================
--- head/lib/libthr/arch/arm/include/pthread_md.h
+++ head/lib/libthr/arch/arm/include/pthread_md.h
@@ -75,8 +75,6 @@
 #endif
 }
 
-extern struct pthread *_thr_initial;
-
 static __inline struct pthread *
 _get_curthread(void)
 {
Index: head/lib/libthr/arch/mips/include/pthread_md.h
===================================================================
--- head/lib/libthr/arch/mips/include/pthread_md.h
+++ head/lib/libthr/arch/mips/include/pthread_md.h
@@ -120,8 +120,6 @@
 #  endif /* ! __mips_n64 */
 #endif /* ! TLS_USE_SYSARCH */
 
-extern struct pthread *_thr_initial;
-
 static __inline struct pthread *
 _get_curthread(void)
 {
Index: head/lib/libthr/arch/powerpc/include/pthread_md.h
===================================================================
--- head/lib/libthr/arch/powerpc/include/pthread_md.h
+++ head/lib/libthr/arch/powerpc/include/pthread_md.h
@@ -80,8 +80,6 @@
 	return ((struct tcb *)(_tp - TP_OFFSET));
 }
 
-extern struct pthread *_thr_initial;
-
 static __inline struct pthread *
 _get_curthread(void)
 {
Index: head/lib/libthr/arch/riscv/include/pthread_md.h
===================================================================
--- head/lib/libthr/arch/riscv/include/pthread_md.h
+++ head/lib/libthr/arch/riscv/include/pthread_md.h
@@ -78,8 +78,6 @@
 	return ((struct tcb *)(_tp - TP_OFFSET));
 }
 
-extern struct pthread *_thr_initial;
-
 static __inline struct pthread *
 _get_curthread(void)
 {
Index: head/lib/libthr/thread/thr_private.h
===================================================================
--- head/lib/libthr/thread/thr_private.h
+++ head/lib/libthr/thread/thr_private.h
@@ -69,6 +69,9 @@
 	WEAK_REF(func, SYM_FBP10(sym));			\
 	SYM_DEFAULT(sym, SYM_FBP10(sym), FBSDprivate_1.0)
 
+struct pthread;
+extern struct pthread	*_thr_initial __hidden;
+
 #include "pthread_md.h"
 #include "thr_umtx.h"
 #include "thread_db.h"
@@ -711,7 +714,6 @@
  */
 
 extern char		*_usrstack __hidden;
-extern struct pthread	*_thr_initial __hidden;
 
 /* For debugger */
 extern int		_libthr_debug;