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# Makefile for the VirtualBox Linux Host PCI Driver.
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# (For 2.6.x this file must be called 'Makefile'!)
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# Copyright (C) 2011 Oracle Corporation
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# This file is part of VirtualBox Open Source Edition (OSE), as
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# available from http://www.virtualbox.org. This file is free software;
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# you can redistribute it and/or modify it under the terms of the GNU
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# General Public License (GPL) as published by the Free Software
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# Foundation, in version 2 as it comes in the "COPYING" file of the
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# VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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# hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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# First, figure out which architecture we're targeting and the build type.
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# (We have to support basic cross building (ARCH=i386|x86_64).)
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# While at it, warn about BUILD_* vars found to help with user problems.
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ifeq ($(filter-out x86_64 amd64 AMD64,$(shell uname -m)),)
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BUILD_TARGET_ARCH_DEF := amd64
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BUILD_TARGET_ARCH_DEF := x86
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ifneq ($(filter-out amd64 x86,$(BUILD_TARGET_ARCH)),)
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$(warning Ignoring unknown BUILD_TARGET_ARCH value '$(BUILD_TARGET_ARCH)'.)
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ifeq ($(BUILD_TARGET_ARCH),)
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BUILD_TARGET_ARCH := amd64
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BUILD_TARGET_ARCH := x86
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BUILD_TARGET_ARCH := $(BUILD_TARGET_ARCH_DEF)
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ifneq ($(BUILD_TARGET_ARCH),$(BUILD_TARGET_ARCH_DEF))
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$(warning Using BUILD_TARGET_ARCH='$(BUILD_TARGET_ARCH)' from the $(origin BUILD_TARGET_ARCH).)
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ifneq ($(filter-out release profile debug strict,$(BUILD_TYPE)),)
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$(warning Ignoring unknown BUILD_TYPE value '$(BUILD_TYPE)'.)
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ifneq ($(BUILD_TYPE),release)
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$(warning Using BUILD_TYPE='$(BUILD_TYPE)' from the $(origin BUILD_TYPE).)
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# override is required by the Debian guys
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override MODULE = vboxpci
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linux/VBoxPci-linux.o \
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SUPR0IdcClientComponent.o \
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linux/SUPR0IdcClient-linux.o
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ifeq ($(BUILD_TARGET_ARCH),x86)
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OBJS += math/gcc/divdi3.o \
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ifneq ($(MAKECMDGOALS),clean)
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ifeq ($(KERNELRELEASE),)
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# building from this directory
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# kernel base directory
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# build for the current kernel, version check
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KERN_DIR := /lib/modules/$(shell uname -r)/build
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ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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KERN_DIR := /usr/src/linux
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ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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$(error Error: unable to find the sources of your current Linux kernel. \
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Specify KERN_DIR=<directory> and run Make again)
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$(warning Warning: using /usr/src/linux as the source directory of your \
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Linux kernel. If this is not correct, specify \
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KERN_DIR=<directory> and run Make again.)
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ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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$(error Error: KERN_DIR does not point to a directory)
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KERN_INCL = $(KERN_DIR)/include
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ifneq ($(shell if test -d $(KERN_INCL); then echo yes; fi),yes)
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$(error Error: unable to find the include directory for your current Linux \
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kernel. Specify KERN_INCL=<directory> and run Make again)
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# module install dir, only for current kernel
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ifneq ($(filter install install_rpm,$(MAKECMDGOALS)),)
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MODULE_DIR_TST := /lib/modules/$(shell uname -r)
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ifeq ($(shell if test -d $(MODULE_DIR_TST); then echo yes; fi),yes)
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MODULE_DIR := $(MODULE_DIR_TST)/misc
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$(error Unable to find the folder to install the support driver to)
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endif # MODULE_DIR unspecified
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else # neq($(KERNELRELEASE),)
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# building from kbuild (make -C <kernel_directory> M=`pwd`)
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endif # neq($(KERNELRELEASE),)
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# debug - show guesses.
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$(warning dbg: KERN_DIR = $(KERN_DIR))
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$(warning dbg: KERN_INCL = $(KERN_INCL))
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$(warning dbg: MODULE_DIR = $(MODULE_DIR))
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INCL := $(addprefix -I,$(KERN_INCL) $(EXTRA_INCL))
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KBUILD_EXTMOD := $(shell pwd)
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INCL += $(addprefix -I$(KBUILD_EXTMOD),/ /include /r0drv/linux)
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INCL += $(addprefix -I$(KBUILD_EXTMOD)/vboxpci,/ /include /r0drv/linux)
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ifneq ($(wildcard $(KBUILD_EXTMOD)/vboxpci),)
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MANGLING := $(KBUILD_EXTMOD)/vboxpci/include/VBox/SUPDrvMangling.h
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MANGLING := $(KBUILD_EXTMOD)/include/VBox/SUPDrvMangling.h
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KFLAGS := -D__KERNEL__ -DMODULE -DRT_OS_LINUX -DIN_RING0 -DIN_RT_R0 \
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-DIN_SUP_R0 -DVBOX -DRT_WITH_VBOX -DVBOX_WITH_HARDENING
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ifdef VBOX_REDHAT_KABI
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KFLAGS += -DVBOX_REDHAT_KABI
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ifeq ($(BUILD_TARGET_ARCH),amd64)
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KFLAGS += -DRT_ARCH_AMD64
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KFLAGS += -DRT_ARCH_X86
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# must be consistent with Config.kmk!
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KFLAGS += -DVBOX_WITH_64_BITS_GUESTS
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ifeq ($(BUILD_TYPE),debug)
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KFLAGS += -DDEBUG -DDEBUG_$(USER) -g
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# IPRT_DEBUG_SEMS indicates thread wrt sems state via the comm field.
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#KFLAGS += -DIPRT_DEBUG_SEMS
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# By default we use remap_pfn_range() kernel API to make kernel pages
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# visible for userland. Unfortunately, it leads to situation that
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# during debug session all structures on that page (such as PVM pointer)
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# are not accessible to the debugger (see #3214).
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# This code enables experimental support
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# for vm_insert_page() kernel API, allowing to export kernel pages
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# to the userland in more debugger-friendly way. Due to stability
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# concerns, not enabled by default yet.
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ifdef VBOX_USE_INSERT_PAGE
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KFLAGS += -DVBOX_USE_INSERT_PAGE
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$(MODULE)-y := $(OBJS)
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EXTRA_CFLAGS += -include $(MANGLING) $(INCL) $(KFLAGS) $(KDEBUG)
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# OL/UEK: disable module signing for external modules -- we don't have any private key
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$(MAKE) KBUILD_VERBOSE=$(KBUILD_VERBOSE) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) CONFIG_MODULE_SIG= -C $(KERN_DIR) modules
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@mkdir -p $(MODULE_DIR); \
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install -m 0664 -o root -g root $(MODULE).$(MODULE_EXT) $(MODULE_DIR); \
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PATH="$(PATH):/bin:/sbin" depmod -a;
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install_rpm: $(MODULE)
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@mkdir -p $(MODULE_DIR); \
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install -m 0664 $(MODULE).$(MODULE_EXT) $(MODULE_DIR)
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else # eq ($(MAKECMDGOALS),clean)
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KERN_DIR := /lib/modules/$(shell uname -r)/build
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ifeq ($(wildcard $(KERN_DIR)/Makefile),)
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KERN_DIR := /usr/src/linux
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ifeq ($(wildcard $(KERN_DIR)/Makefile),)
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find . \( -name \*.o -o -name \*.cmd \) -print0 | xargs -0 rm -f
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rm -rf .tmp_ver* $(MODULE).* Module.symvers Modules.symvers modules.order
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$(MAKE) KBUILD_VERBOSE=$(KBUILD_VERBOSE) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) -C $(KERN_DIR) clean
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endif # eq($(MAKECMDGOALS),clean)