--- configure.orig	2019-12-10 04:01:36.000000000 -0500
+++ configure	2020-11-21 14:00:52.301451000 -0500
@@ -8942,7 +8942,7 @@
 
 
 case "$host" in
-  *-*-freebsd*)
+  *-*-freebsd*| *-*-midnightbsd*)
     THREAD_LIBS="-pthread"
     THREAD_CFLAGS="-D_THREAD_SAFE"
     CFLAGS="$THREAD_CFLAGS $CFLAGS"
