--- configure.orig	2022-08-29 00:00:00 UTC
+++ configure
@@ -4069,6 +4069,9 @@ case $host_os in
 *freebsd*)
 	freebsd=1
 	;;
+*midnightbsd*)
+	freebsd=1
+	;;
 *)
 	as_fn_error $? "libfabric only builds on Linux, OS X, and FreeBSD" "$LINENO" 5
 	;;
