| 1 | #
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| 2 | # Makefile for the VirtualBox Linux Host Driver.
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| 3 | # (For 2.6.x this file must be called 'Makefile'!)
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| 4 | #
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| 5 |
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| 6 | #
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| 7 | #
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| 8 | # Copyright (C) 2006-2007 innotek GmbH
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| 9 | #
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| 10 | # This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | # available from http://www.alldomusa.eu.org. This file is free software;
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| 12 | # you can redistribute it and/or modify it under the terms of the GNU
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| 13 | # General Public License (GPL) as published by the Free Software
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| 14 | # Foundation, in version 2 as it comes in the "COPYING" file of the
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| 15 | # VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 16 | # hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | #
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| 18 | # The contents of this file may alternatively be used under the terms
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| 19 | # of the Common Development and Distribution License Version 1.0
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| 20 | # (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 21 | # VirtualBox OSE distribution, in which case the provisions of the
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| 22 | # CDDL are applicable instead of those of the GPL.
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| 23 | #
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| 24 | # You may elect to license modified versions of this file under the
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| 25 | # terms and conditions of either the GPL or the CDDL or both.
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| 26 | #
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| 27 |
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| 28 | #
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| 29 | # First, figure out which architecture we're targeting.
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| 30 | # (We have to support basic cross building (ARCH=i386|x86_64).)
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| 31 | #
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| 32 | ifneq ($(filter-out amd64 x86,$(BUILD_TARGET_ARCH)),)
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| 33 | $(warning Ignoring unknown BUILD_TARGET_ARCH value '$(BUILD_TARGET_ARCH)'.)
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| 34 | BUILD_TARGET_ARCH :=
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| 35 | endif
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| 36 | ifeq ($(BUILD_TARGET_ARCH),)
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| 37 | ifeq ($(ARCH),x86_64)
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| 38 | BUILD_TARGET_ARCH := amd64
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| 39 | else
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| 40 | ifeq ($(ARCH),i386)
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| 41 | BUILD_TARGET_ARCH := x86
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| 42 | else
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| 43 | ifeq ($(filter-out x86_64 amd64 AMD64,$(shell uname -m)),)
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| 44 | BUILD_TARGET_ARCH := amd64
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| 45 | else
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| 46 | BUILD_TARGET_ARCH := x86
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| 47 | endif
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| 48 | endif
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| 49 | endif
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| 50 | endif
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| 51 |
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| 52 |
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| 53 | MODULE = vboxdrv
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| 54 | OBJS = \
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| 55 | linux/SUPDrv-linux.o \
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| 56 | SUPDRVShared.o \
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| 57 | r0drv/alloc-r0drv.o \
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| 58 | r0drv/initterm-r0drv.o \
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| 59 | r0drv/linux/alloc-r0drv-linux.o \
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| 60 | r0drv/linux/initterm-r0drv-linux.o \
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| 61 | r0drv/linux/process-r0drv-linux.o \
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| 62 | r0drv/linux/semevent-r0drv-linux.o \
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| 63 | r0drv/linux/semeventmulti-r0drv-linux.o \
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| 64 | r0drv/linux/semfastmutex-r0drv-linux.o \
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| 65 | r0drv/linux/spinlock-r0drv-linux.o \
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| 66 | r0drv/linux/thread-r0drv-linux.o
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| 67 | ifeq ($(BUILD_TARGET_ARCH),amd64)
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| 68 | OBJS += alloc/heapsimple.o
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| 69 | endif
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| 70 |
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| 71 | ifneq ($(MAKECMDGOALS),clean)
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| 72 |
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| 73 | # kernel base directory
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| 74 | ifndef KERN_DIR
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| 75 | # build for the current kernel, version check
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| 76 | KERN_DIR := /lib/modules/$(shell uname -r)/build
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| 77 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 78 | KERN_DIR := /usr/src/linux
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| 79 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 80 | $(error Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again.)
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| 81 | endif
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| 82 | $(warning Warning: using /usr/src/linux as the source directory of your Linux kernel. If this is not correct, specify KERN_DIR=<directory> and run Make again.)
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| 83 | endif
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| 84 | # check if versions match -- works only for later 2.6 kernels
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| 85 | VBOX_KERN_VER := $(shell $(MAKE) -sC $(KERN_DIR) kernelrelease 2> /dev/null || true)
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| 86 | ifneq ($(VBOX_KERN_VER),)
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| 87 | ifneq ($(VBOX_KERN_VER),$(shell uname -r))
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| 88 | $(error Error: /usr/src/linux (version $(VBOX_KERN_VER)) does not match the current kernel (version $(shell uname -r)))
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| 89 | endif
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| 90 | endif
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| 91 | else
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| 92 | # build for a dedicated kernel, no version check
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| 93 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 94 | $(error Error: KERN_DIR does not point to a directory.)
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| 95 | endif
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| 96 | endif
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| 97 |
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| 98 | # includes
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| 99 | ifndef KERN_INCL
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| 100 | KERN_INCL = $(KERN_DIR)/include
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| 101 | endif
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| 102 | ifneq ($(shell if test -d $(KERN_INCL); then echo yes; fi),yes)
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| 103 | $(error Error: unable to find the include directory for your current Linux kernel. Specify KERN_INCL=<directory> and run Make again.)
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| 104 | endif
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| 105 |
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| 106 | # module install dir, only for current kernel
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| 107 | ifneq ($(filter install install_rpm,$(MAKECMDGOALS)),)
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| 108 | ifndef MODULE_DIR
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| 109 | MODULE_DIR_TST := /lib/modules/$(shell uname -r)
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| 110 | ifeq ($(shell if test -d $(MODULE_DIR_TST); then echo yes; fi),yes)
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| 111 | MODULE_DIR := $(MODULE_DIR_TST)/misc
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| 112 | else
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| 113 | $(error Unable to find the folder to install the support driver to)
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| 114 | endif
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| 115 | endif # MODULE_DIR unspecified
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| 116 | endif
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| 117 |
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| 118 | # guess kernel version (24 or 26)
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| 119 | KERN_VERSION := $(if $(wildcard $(KERN_DIR)/Rules.make),24,26)
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| 120 |
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| 121 | # debug - show guesses.
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| 122 | ifdef DEBUG
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| 123 | $(warning dbg: KERN_DIR = $(KERN_DIR))
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| 124 | $(warning dbg: KERN_INCL = $(KERN_INCL))
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| 125 | $(warning dbg: MODULE_DIR = $(MODULE_DIR))
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| 126 | $(warning dbg: KERN_VERSION = $(KERN_VERSION))
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| 127 | endif
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| 128 |
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| 129 | #
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| 130 | # Compiler options
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| 131 | #
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| 132 | ifndef INCL
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| 133 | INCL := -I$(KERN_INCL) $(addprefix -I, $(EXTRA_INCL))
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| 134 | ifndef KBUILD_EXTMOD
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| 135 | KBUILD_EXTMOD := $(shell pwd)
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| 136 | endif
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| 137 | INCL += $(addprefix -I$(KBUILD_EXTMOD),/ /include /r0drv/linux)
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| 138 | export INCL
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| 139 | endif
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| 140 | KFLAGS := -D__KERNEL__ -DMODULE -DRT_OS_LINUX -DIN_RING0 -DIN_RT_R0 -DIN_SUP_R0
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| 141 | ifndef CONFIG_VBOXDRV_FIXEDMAJOR
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| 142 | KFLAGS += -DCONFIG_VBOXDRV_AS_MISC
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| 143 | endif
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| 144 | ifeq ($(BUILD_TARGET_ARCH),amd64)
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| 145 | KFLAGS += -DRT_ARCH_AMD64
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| 146 | else
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| 147 | KFLAGS += -DRT_ARCH_X86
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| 148 | endif
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| 149 | #ifeq ($(BUILD_TYPE),debug) - you'll have to enable this manually to get debug stuff.
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| 150 | #KFLAGS += -DDEBUG
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| 151 | #endif
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| 152 |
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| 153 | #
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| 154 | # Use the RTR0MemObj API - testing.
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| 155 | # If this makes testboxes crash/burn/leak disable it and add a comment to defect #2116.
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| 156 | #
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| 157 | KFLAGS += -DUSE_NEW_OS_INTERFACE_FOR_MM
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| 158 | OBJS += r0drv/memobj-r0drv.o \
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| 159 | r0drv/linux/memobj-r0drv-linux.o
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| 160 | ifeq ($(BUILD_TARGET_ARCH),x86) # Some gcc versions ends up needing __divdi3.
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| 161 | OBJS += math/gcc/qdivrem.o \
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| 162 | math/gcc/divdi3.o
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| 163 | endif
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| 164 |
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| 165 | ifeq ($(KERN_VERSION), 24)
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| 166 | # 2.4
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| 167 | TOPDIR = $(KERN_DIR)
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| 168 | MODULE_EXT := o
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| 169 | EXTRA_CFLAGS := -DVBOX_LINUX_2_4
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| 170 | $(MODULE)-objs = $(OBJS)
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| 171 | else
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| 172 | # 2.6 and later
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| 173 | MODULE_EXT := ko
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| 174 | $(MODULE)-y := $(OBJS)
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| 175 | endif
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| 176 |
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| 177 | # build defs
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| 178 | EXTRA_CFLAGS += $(INCL) $(KFLAGS) $(KDEBUG)
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| 179 |
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| 180 | all: $(MODULE)
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| 181 |
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| 182 | obj-m += $(MODULE).o
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| 183 |
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| 184 | $(MODULE):
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| 185 | $(MAKE) KBUILD_VERBOSE=1 -C $(KERN_DIR) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) modules
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| 186 |
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| 187 | ifeq ($(KERN_VERSION), 24)
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| 188 | #
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| 189 | # 2.4 Module linking
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| 190 | #
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| 191 | $(MODULE).o: $(OBJS)
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| 192 | $(LD) -o $@ -r $(OBJS)
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| 193 |
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| 194 | include $(KERN_DIR)/Rules.make
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| 195 |
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| 196 | endif
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| 197 |
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| 198 | install: $(MODULE)
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| 199 | @mkdir -p $(MODULE_DIR); \
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| 200 | install -m 0664 -o root -g root $(MODULE).$(MODULE_EXT) $(MODULE_DIR); \
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| 201 | PATH="$(PATH):/bin:/sbin" depmod -ae; \
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| 202 | rm -f /etc/vbox/module_not_compiled
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| 203 |
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| 204 | install_rpm: $(MODULE)
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| 205 | @mkdir -p $(MODULE_DIR); \
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| 206 | install -m 0664 $(MODULE).$(MODULE_EXT) $(MODULE_DIR)
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| 207 |
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| 208 | endif # eq($(MAKECMDGOALS),clean)
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| 209 |
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| 210 | clean:
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| 211 | for f in . linux r0drv r0drv/linux; do rm -f $$f/*.o $$f/.*.cmd $$f/.*.flags; done
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| 212 | rm -rf .vboxdrv* .tmp_ver* vboxdrv.* Module.symvers Modules.symvers
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