Index: src/VBox/HostDrivers/VBoxPci/Makefile.kmk
===================================================================
--- src/VBox/HostDrivers/VBoxPci/Makefile.kmk.orig
+++ src/VBox/HostDrivers/VBoxPci/Makefile.kmk
@@ -1,7 +1,7 @@
 SUB_DEPTH = ../../../..
 include $(KBUILD_PATH)/subheader.kmk
 
-ifeq (1,1)
+ifdef VBOX_WITH_VBOXDRV
 
 if1of ($(KBUILD_TARGET), linux)
 
@@ -25,6 +25,7 @@ VBoxPci_LIBS            += \
 
 endif
 
+endif
 
 ifeq ($(KBUILD_TARGET),linux)
 
@@ -73,6 +74,5 @@ $$(VBoxPci-sh_0_OUTDIR)/build_in_tmp: \
 	$(QUIET)chmod 0755 $@
 endif
 
-endif
 
 include $(KBUILD_PATH)/subfooter.kmk