Index: /trunk/src/VBox/Runtime/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Runtime/Makefile.kmk	(revision 64919)
+++ /trunk/src/VBox/Runtime/Makefile.kmk	(revision 64920)
@@ -38,4 +38,7 @@
   #LIBRARIES.os2 += RuntimeGuestR0OS2Warp3
   LIBRARIES.win.x86 += RuntimeGuestR0NT4
+ endif
+ if1of ($(KBUILD_TARGET),win)
+  include $(PATH_SUB_CURRENT)/tools/Makefile.kmk
  endif