--- src/VBox/Devices/Makefile.kmk.orig	2020-07-10 02:55:25.000000000 +1000
+++ src/VBox/Devices/Makefile.kmk	2020-08-22 02:42:02.444548000 +1000
@@ -191,7 +191,7 @@
  ifn1of ($(KBUILD_TARGET), os2)
   VBoxDD_SOURCES += Storage/DrvHostDVD.cpp
  endif
- ifn1of ($(KBUILD_TARGET), darwin freebsd os2 solaris)
+ ifn1of ($(KBUILD_TARGET), darwin bsdsunix freebsd os2 solaris)
   VBoxDD_SOURCES += Storage/DrvHostFloppy.cpp
  endif
 
@@ -203,6 +203,9 @@
  	Storage/HBDMgmt-darwin.cpp \
  	Storage/DrvHostBase-darwin.cpp
 
+ VBoxDD_SOURCES.bsdsunix += \
+ 	Storage/DrvHostBase-bsdsunix.cpp
+
  VBoxDD_SOURCES.freebsd += \
  	Storage/DrvHostBase-freebsd.cpp
 
@@ -370,6 +373,11 @@
  	USB/USBProxyDevice.cpp \
  	USB/solaris/USBProxyDevice-solaris.cpp
 
+  VBoxDD_DEFS.bsdsunix   += VUSB_HAVE_USBPROXY_DEVICE
+  VBoxDD_SOURCES.bsdsunix+= \
+ 	USB/USBProxyDevice.cpp \
+ 	USB/bsdsunix/USBProxyDevice-bsdsunix.cpp
+
   VBoxDD_DEFS.freebsd   += VUSB_HAVE_USBPROXY_DEVICE
   VBoxDD_SOURCES.freebsd+= \
  	USB/USBProxyDevice.cpp \
@@ -727,6 +735,11 @@
   VBoxDD_SOURCES.darwin += Serial/DrvHostSerial.cpp
  endif # darwin
 
+ ifeq ($(KBUILD_TARGET),bsdsunix)
+  VBoxDD_SOURCES += Serial/DrvHostSerial.cpp
+  VBoxDD_SOURCES.bsdsunix += Network/DrvTAP.cpp
+ endif # bsdsunix
+
  ifeq ($(KBUILD_TARGET),freebsd)
   VBoxDD_SOURCES += Serial/DrvHostSerial.cpp
   VBoxDD_SOURCES.freebsd += Network/DrvTAP.cpp
@@ -1485,7 +1498,7 @@
  	Graphics/shaderlib/libWineStub/debug.c
  VBoxSVGA3D_LIBS        = $(LIB_RUNTIME)
  VBoxSVGA3D_LIBS.win   += $(PATH_SDK_$(VBOX_WINPSDK)_LIB)/Opengl32.lib
- if1of ($(KBUILD_TARGET), solaris linux freebsd)
+ if1of ($(KBUILD_TARGET), solaris linux bsdsunix freebsd)
   VBoxSVGA3D_LIBS      += GL
  endif
  VBoxSVGA3D_LDFLAGS.darwin += \