--- Config.kmk.orig	2017-11-28 16:27:33.000000000 -0500
+++ Config.kmk	2018-11-07 02:33:15.447903000 -0500
@@ -122,12 +122,16 @@
 if1of ($(KBUILD_TARGET), openbsd)
  TOOL_FLEX_LEX = gflex
 endif
+if1of ($(KBUILD_TARGET), bsdsunix freebsd)
+ TOOL_FLEX_LEX = /usr/local/bin/flex
+endif
 
 #
 # The OS and Architecture indicators.
 #
 DEFS.darwin  += KBUILD_OS_DARWIN
 DEFS.freebsd += KBUILD_OS_FREEBSD
+DEFS.bsdsunix += KBUILD_OS_BSDSUNIX
 DEFS.linux   += KBUILD_OS_LINUX
 DEFS.netbsd  += KBUILD_OS_NETBSD
 DEFS.openbsd += KBUILD_OS_OPENBSD
@@ -322,7 +326,7 @@
 
  else # !darwin
   # Use GCC3 when we're certain that the system is using GNU ld and ar.
-  ifeq ($(filter-out linux freebsd openbsd netbsd,$(KBUILD_TARGET)),)
+  ifeq ($(filter-out linux bsdsunix freebsd openbsd netbsd,$(KBUILD_TARGET)),)
    TEMPLATE_BIN_TOOL              = GCC3
   else
    TEMPLATE_BIN_TOOL              = GCC3PLAIN
@@ -339,6 +343,9 @@
   ifeq ($(KBUILD_TARGET),freebsd)
    TEMPLATE_BIN_INCS            += $(PATH_GNUMAKE_SRC)/glob /usr/local/include
   endif
+  ifeq ($(KBUILD_TARGET),bsdsunix)
+   TEMPLATE_BIN_INCS            += $(PATH_GNUMAKE_SRC)/glob /usr/local/include
+  endif
   ifeq ($(KBUILD_TARGET),linux)
    TEMPLATE_BIN_LIBS            += rt
   endif
@@ -382,7 +389,7 @@
 TEMPLATE_BIN-THREADED = Threaded command line binary
 TEMPLATE_BIN-THREADED_EXTENDS = BIN
 TEMPLATE_BIN-THREADED_EXTENDS_BY = appending
-if1of ($(KBUILD_TARGET), dragonfly freebsd gnuhurd gnukfbsd gnuknbsd linux netbsd openbsd)
+if1of ($(KBUILD_TARGET), dragonfly bsdsunix freebsd gnuhurd gnukfbsd gnuknbsd linux netbsd openbsd)
  TEMPLATE_BIN-THREADED_LIBS = pthread
 endif