diff -Nur VirtualBox-4.1.14.orig/Config.kmk VirtualBox-4.1.14/Config.kmk
--- VirtualBox-4.1.14.orig/Config.kmk	2012-04-26 16:56:21.000000000 +0000
+++ VirtualBox-4.1.14/Config.kmk	2012-05-21 14:35:22.348398884 +0000
@@ -2856,7 +2856,7 @@
 TEMPLATE_VBOXR0DRV_CFLAGS.amd64        = -m64 -mno-red-zone -mcmodel=kernel -mno-sse -mno-mmx -mno-sse2 -mno-3dnow \
	-fno-reorder-blocks -ffreestanding -fno-asynchronous-unwind-tables -funit-at-a-time \
	-Wno-sign-compare -Wdeclaration-after-statement
-TEMPLATE_VBOXR0DRV_CXXFLAGS            = $(filter-out -Wstrict-prototypes -Wno-pointer-sign -ffreestanding -Wdeclaration-after-statement -Werror-implicit-function-declaration,$(TEMPLATE_VBOXR0DRV_CFLAGS) $(TEMPLATE_VBOXR0DRV_CFLAGS.$(KBUILD_TARGET_ARCH))) -fno-exceptions -fno-rtti
+TEMPLATE_VBOXR0DRV_CXXFLAGS            = $(filter-out -Wstrict-prototypes -Wno-pointer-sign -ffreestanding -Wdeclaration-after-statement -Werror-implicit-function-declaration,$(TEMPLATE_VBOXR0DRV_CFLAGS) $(TEMPLATE_VBOXR0DRV_CFLAGS.$(KBUILD_TARGET_ARCH))) -fno-exceptions -fno-rtti -fpermissive
   ifndef VBOX_LINUX_VERSION_2_4
 # 2.6
 TEMPLATE_VBOXR0DRV_SYSSUFF             = .ko