See

	https://gitlab.gnome.org/GNOME/gtk/issues/1846

--- configure	2018-09-21 05:47:02.000000000 -0400
+++ configure	2019-04-25 12:16:07.558467000 -0400
@@ -27503,13 +27503,14 @@
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-                { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_setname_np(pthread_t, const char*)" >&5
-$as_echo_n "checking for pthread_setname_np(pthread_t, const char*)... " >&6; }
+                { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_set_name_np(pthread_t, const char*)" >&5
+$as_echo_n "checking for pthread_set_name_np(pthread_t, const char*)... " >&6; }
         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <pthread.h>
+#include <pthread_np.h>
 int
 main ()
 {
-pthread_setname_np(pthread_self(), "example")
+pthread_set_name_np(pthread_self(), "example")
   ;
   return 0;
@@ -27528,13 +27529,14 @@
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
-        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_getname_np(pthread_t, name, len)" >&5
-$as_echo_n "checking for pthread_getname_np(pthread_t, name, len)... " >&6; }
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_get_name_np(pthread_t, name, len)" >&5
+$as_echo_n "checking for pthread_get_name_np(pthread_t, name, len)... " >&6; }
         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <pthread.h>
+#include <pthread_np.h>
 int
 main ()
 {
-char name[16]; pthread_getname_np(pthread_self(), name, 16);
+char name[16]; pthread_get_name_np(pthread_self(), name, 16);
   ;
   return 0;
--- glib/gthread-posix.c	2018-08-15 12:22:08.000000000 -0400
+++ glib/gthread-posix.c	2019-04-25 12:53:45.004258000 -0400
@@ -54,4 +54,12 @@
 #include <errno.h>
 #include <pthread.h>
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFlyBSD__)
+#	include <pthread_np.h>
+#	if defined(__NetBSD__)
+#		define pthread_setname_np(t, s) pthread_set_name_np(t, s, NULL)
+#	else
+#		define pthread_setname_np pthread_set_name_np
+#	endif
+#endif
 
 #include <sys/time.h>
--- glib/tests/thread.c	2018-09-21 05:29:23.000000000 -0400
+++ glib/tests/thread.c	2019-04-25 13:00:10.190807000 -0400
@@ -40,4 +40,8 @@
 #ifdef THREADS_POSIX
 #include <pthread.h>
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFlyBSD__)
+#	include <pthread_np.h>
+#	define pthread_getname_np pthread_get_name_np
+#endif
 #endif