Index: /trunk/Config.kmk
===================================================================
--- /trunk/Config.kmk	(revision 43682)
+++ /trunk/Config.kmk	(revision 43683)
@@ -1608,8 +1608,8 @@
 # ARCH_BITS_DEFS.
 #
-ifeq ($(KBUILD_TARGET_ARCH),amd64)
+if1of ($(KBUILD_TARGET_ARCH),amd64 sparc64)
  VBOX_HC_ARCH_BITS := 64
  ARCH_BITS_DEFS    := HC_ARCH_BITS=64
-else ifeq ($(KBUILD_TARGET_ARCH),x86)
+else if1of ($(KBUILD_TARGET_ARCH),x86 sparc32)
  VBOX_HC_ARCH_BITS := 32
  ARCH_BITS_DEFS    := HC_ARCH_BITS=32