Index: virtualbox/Config.kmk
===================================================================
--- virtualbox.orig/Config.kmk	2014-06-05 17:31:57.045160829 +0400
+++ virtualbox/Config.kmk	2014-06-05 17:31:57.350886326 +0400
@@ -3331,7 +3331,7 @@
 
 ifeq ($(KBUILD_TARGET),solaris)
 ## The Solaris /usr/platform/i86pc/include and /usr/include directories.
-VBOX_SOLARIS_SYS_INCS ?= /usr/platform/i86pc/include /usr/include
+VBOX_SOLARIS_SYS_INCS ?= /usr/include/illumos /usr/include
 
 TEMPLATE_VBOXR0DRV_TOOL                = $(VBOX_GCC_TOOL)
 TEMPLATE_VBOXR0DRV_DEFS               += _MACHDEP _KERNEL _STRICT_STDC
Index: virtualbox/src/VBox/Devices/Makefile.kmk
===================================================================
--- virtualbox.orig/src/VBox/Devices/Makefile.kmk	2014-06-05 17:31:38.257824553 +0400
+++ virtualbox/src/VBox/Devices/Makefile.kmk	2014-06-05 17:31:57.356157558 +0400
@@ -115,6 +115,7 @@
  VBoxDD_INCS             = \
  	build \
  	Network/slirp
+ VBoxDD_INCS.solaris     += /usr/include/illumos
  VBoxDD_DEFS             = \
  	VBOX_ACPI \
  	VBOX_HGCM_HOST_CODE \
Index: virtualbox/src/VBox/Main/Makefile.kmk
===================================================================
--- virtualbox.orig/src/VBox/Main/Makefile.kmk	2014-06-04 16:43:26.898295676 +0400
+++ virtualbox/src/VBox/Main/Makefile.kmk	2014-06-05 22:19:51.247051685 +0400
@@ -303,6 +303,7 @@
 	$(dir $(VBOX_XML_SCHEMADEFS_H)) \
 	$(VBoxAPIWrap_0_OUTDIR) \
 	.
+VBoxSVC_INCS.solaris = /usr/include/illumos
 VBoxSVC_INCS.win = \
 	$(VBoxCOM_0_OUTDIR)
 ifdef VBOX_WITH_USB