--- Makefile.orig	2021-12-24 02:47:51.000000000 +1000
+++ Makefile	2021-12-29 16:37:39.595400000 +1000
@@ -383,6 +383,27 @@
   TARGET_LDFLAGS = -lnsl -lsocket
 endif
 
+# BSDSUniX 1.x
+ifeq ($(TARGET),bsdsunix1)
+  set_target_defaults = $(call default_opts, \
+    USE_POLL USE_TPROXY USE_LIBCRYPT USE_THREAD USE_CPU_AFFINITY USE_KQUEUE   \
+    USE_CLOSEFROM USE_LIBATOMIC USE_GETADDRINFO)
+endif
+
+# FreeBSD pre 10
+ifeq ($(TARGET),freebsd9)
+  set_target_defaults = $(call default_opts, \
+    USE_POLL USE_TPROXY USE_LIBCRYPT USE_THREAD USE_KQUEUE   \
+    USE_CLOSEFROM USE_LIBATOMIC USE_GETADDRINFO)
+endif
+
+# BSDSUniX 2.x and above
+ifeq ($(TARGET),bsdsunix)
+  set_target_defaults = $(call default_opts, \
+    USE_POLL USE_TPROXY USE_LIBCRYPT USE_THREAD USE_CPU_AFFINITY USE_KQUEUE   \
+    USE_ACCEPT4 USE_CLOSEFROM USE_GETADDRINFO USE_PROCCTL)
+endif
+
 # FreeBSD 10 and above
 ifeq ($(TARGET),freebsd)
   set_target_defaults = $(call default_opts, \