| 1 | #
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| 2 | # VirtualBox Guest Additions kernel module Makefile, common parts.
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| 3 | #
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| 4 | # (For 2.6.x, the main file must be called 'Makefile'!)
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| 5 | #
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| 6 | # Copyright (C) 2006-2007 Sun Microsystems, Inc.
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| 7 | #
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| 8 | # This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | # available from http://www.virtualbox.org. This file is free software;
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| 10 | # you can redistribute it and/or modify it under the terms of the GNU
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| 11 | # General Public License (GPL) as published by the Free Software
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| 12 | # Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | # VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | # hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | #
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| 16 | # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 17 | # Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 18 | # additional information or have any questions.
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| 19 | #
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| 20 |
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| 21 | #
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| 22 | # These file should be included by the Makefiles for any kernel modules we
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| 23 | # build as part of the Guest Additions. The intended way of doing this is as
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| 24 | # follows:
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| 25 | #
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| 26 | # include Makefile.include
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| 27 | # MOD_NAME = <name of the module to be built, without extension>
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| 28 | # MOD_OBJS = <list of object files which should be included>
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| 29 | # MOD_FLAGS = <any additional CFLAGS which this module needs>
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| 30 | #
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| 31 | # The kmk kBuild define KBUILD_TARGET_ARCH is available.
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| 32 | #
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| 33 | # @todo the shared folders module Makefile also includes the following bits.
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| 34 | # Integrate them if necessary.
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| 35 | # MOD_FLAGS += -DEXPORT_SYMTAB -DVBGL_VBOXGUEST -DRT_WITH_VBOX
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| 36 | #
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| 37 | # # special hack for Fedora Core 6 2.6.18 (fc6), rhel5 2.6.18 (el5),
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| 38 | # # ClarkConnect 4.3 (cc4) and ClarkConnect 5 (v5)
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| 39 | # ifeq ($(KERNELRELEASE),)
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| 40 | # KFLAGS += $(foreach inc,$(KERN_INCL),\
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| 41 | # $(if $(wildcard $(inc)/linux/utsrelease.h),\
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| 42 | # $(if $(shell grep '"2.6.18.*fc6.*"' $(inc)/linux/utsrelease.h; \
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| 43 | # grep '"2.6.18.*el5.*"' $(inc)/linux/utsrelease.h; \
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| 44 | # grep '"2.6.18.*v5.*"' $(inc)/linux/utsrelease.h; \
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| 45 | # grep '"2.6.18.*cc4.*"' $(inc)/linux/utsrelease.h),\
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| 46 | # -DKERNEL_FC6,),))
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| 47 | # else
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| 48 | # KFLAGS += $(if $(shell echo "$(KERNELRELEASE)"|grep '2.6.18.*fc6.*';\
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| 49 | # echo "$(KERNELRELEASE)"|grep '2.6.18.*el5.*';\
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| 50 | # echo "$(KERNELRELEASE)"|grep '2.6.18.*v5.*';\
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| 51 | # echo "$(KERNELRELEASE)"|grep '2.6.18.*cc4.*'),\
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| 52 | # -DKERNEL_FC6,)
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| 53 | # endif
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| 54 | #
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| 55 | ## important: Don't remove Module.symvers! DKMS does 'make clean' before building ...
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| 56 | # rm -rf .vboxvfs* .tmp_ver* vboxvfs.* Modules.symvers modules.order
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| 57 | #
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| 58 |
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| 59 |
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| 60 |
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| 61 | # override is required by the Debian guys
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| 62 | override MODULE = $(MOD_NAME)
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| 63 | OBJS = $(MOD_OBJS)
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| 64 |
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| 65 | ifneq ($(MAKECMDGOALS),clean)
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| 66 |
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| 67 | ifeq ($(KERNELRELEASE),)
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| 68 |
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| 69 | #
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| 70 | # building from this directory
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| 71 | #
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| 72 |
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| 73 | # kernel base directory
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| 74 | ifndef KERN_DIR
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| 75 | KERN_DIR := /lib/modules/$(shell uname -r)/build
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| 76 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 77 | KERN_DIR := /usr/src/linux
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| 78 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 79 | $(error Error: unable to find the sources of your current Linux kernel. \
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| 80 | Specify KERN_DIR=<directory> and run Make again)
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| 81 | endif
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| 82 | $(warning Warning: using /usr/src/linux as the source directory of your \
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| 83 | Linux kernel. If this is not correct, specify \
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| 84 | KERN_DIR=<directory> and run Make again.)
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| 85 | endif
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| 86 | else
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| 87 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 88 | $(error Error: KERN_DIR does not point to a directory)
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| 89 | endif
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| 90 | endif
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| 91 |
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| 92 | # includes
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| 93 | ifndef KERN_INCL
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| 94 | KERN_INCL = $(KERN_DIR)/include
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| 95 | endif
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| 96 | ifneq ($(shell if test -d $(KERN_INCL); then echo yes; fi),yes)
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| 97 | $(error Error: unable to find the include directory for your current Linux \
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| 98 | kernel. Specify KERN_INCL=<directory> and run Make again)
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| 99 | endif
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| 100 |
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| 101 | # module install dir, only for current kernel
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| 102 | ifneq ($(filter install install_rpm,$(MAKECMDGOALS)),)
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| 103 | ifndef MODULE_DIR
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| 104 | MODULE_DIR_TST := /lib/modules/$(shell uname -r)
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| 105 | ifeq ($(shell if test -d $(MODULE_DIR_TST); then echo yes; fi),yes)
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| 106 | MODULE_DIR := $(MODULE_DIR_TST)/misc
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| 107 | else
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| 108 | $(error Unable to find the folder to install the driver ($(MOD_NAME)) to)
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| 109 | endif
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| 110 | endif # MODULE_DIR unspecified
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| 111 | endif
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| 112 |
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| 113 | # guess kernel version (24 or 26)
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| 114 | ifeq ($(shell if grep '"2\.4\.' $(KERN_INCL)/linux/version.h > /dev/null; then echo yes; fi),yes)
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| 115 | KERN_VERSION := 24
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| 116 | else
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| 117 | KERN_VERSION := 26
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| 118 | endif
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| 119 |
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| 120 | else # neq($(KERNELRELEASE),)
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| 121 |
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| 122 | #
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| 123 | # building from kbuild (make -C <kernel_directory> M=`pwd`)
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| 124 | #
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| 125 |
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| 126 | # guess kernel version (24 or 26)
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| 127 | ifeq ($(shell if echo "$(VERSION).$(PATCHLEVEL)." | grep '2\.4\.' > /dev/null; then echo yes; fi),yes)
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| 128 | KERN_VERSION := 24
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| 129 | else
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| 130 | KERN_VERSION := 26
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| 131 | endif
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| 132 |
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| 133 | endif # neq($(KERNELRELEASE),)
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| 134 |
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| 135 | # debug - show guesses.
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| 136 | ifdef DEBUG
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| 137 | $(warning dbg: KERN_DIR = $(KERN_DIR))
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| 138 | $(warning dbg: KERN_INCL = $(KERN_INCL))
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| 139 | $(warning dbg: MODULE_DIR = $(MODULE_DIR))
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| 140 | $(warning dbg: KERN_VERSION = $(KERN_VERSION))
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| 141 | endif
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| 142 |
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| 143 | KBUILD_VERBOSE ?= 1
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| 144 |
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| 145 | #
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| 146 | # Compiler options
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| 147 | #
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| 148 | ifndef INCL
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| 149 | INCL := $(addprefix -I,$(KERN_INCL) $(EXTRA_INCL))
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| 150 | ifndef KBUILD_EXTMOD
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| 151 | KBUILD_EXTMOD := $(shell pwd)
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| 152 | endif
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| 153 | INCL += $(addprefix -I$(KBUILD_EXTMOD),/ /include /r0drv/linux)
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| 154 | export INCL
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| 155 | endif
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| 156 | KFLAGS := -D__KERNEL__ -DMODULE -DRT_OS_LINUX -DIN_RING0 \
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| 157 | -DIN_RT_R0 -DIN_SUP_R0 -DVBOX -DVBGL_VBOXGUEST -DVBOX_WITH_HGCM \
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| 158 | -DLOG_TO_BACKDOOR -DRT_WITH_VBOX -DIN_MODULE -DIN_GUEST_R0
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| 159 | ifeq ($(BUILD_TARGET_ARCH),amd64)
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| 160 | KFLAGS += -DRT_ARCH_AMD64 -DVBOX_WITH_64_BITS_GUESTS
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| 161 | else
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| 162 | KFLAGS += -DRT_ARCH_X86
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| 163 | endif
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| 164 | ifeq ($(BUILD_TYPE),debug)
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| 165 | KFLAGS += -DDEBUG
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| 166 | endif
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| 167 |
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| 168 | ifeq ($(KERN_VERSION), 24)
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| 169 | #
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| 170 | # 2.4
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| 171 | #
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| 172 |
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| 173 | CFLAGS := -O2 -DVBOX_LINUX_2_4 -DEXPORT_SYMTAB $(INCL) $(KFLAGS) $(KDEBUG)
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| 174 | MODULE_EXT := o
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| 175 |
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| 176 | # 2.4 Module linking
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| 177 | $(MODULE).o: $(OBJS)
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| 178 | $(LD) -o $@ -r $(OBJS)
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| 179 |
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| 180 | .PHONY: $(MODULE)
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| 181 | all: $(MODULE)
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| 182 | $(MODULE): $(MODULE).o
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| 183 |
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| 184 | else
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| 185 | #
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| 186 | # 2.6 and later
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| 187 | #
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| 188 |
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| 189 | MODULE_EXT := ko
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| 190 |
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| 191 | $(MODULE)-y := $(OBJS)
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| 192 |
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| 193 | # build defs
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| 194 | EXTRA_CFLAGS += $(INCL) $(KFLAGS) $(KDEBUG)
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| 195 |
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| 196 | all: $(MODULE)
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| 197 |
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| 198 | obj-m += $(MODULE).o
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| 199 |
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| 200 | $(MODULE):
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| 201 | $(MAKE) KBUILD_VERBOSE=$(KBUILD_VERBOSE) -C $(KERN_DIR) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) modules
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| 202 |
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| 203 | endif
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| 204 |
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| 205 | install: $(MODULE)
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| 206 | @mkdir -p $(MODULE_DIR); \
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| 207 | install -m 0664 -o root -g root $(MODULE).$(MODULE_EXT) $(MODULE_DIR); \
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| 208 | PATH="$(PATH):/bin:/sbin" depmod -a;
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| 209 |
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| 210 | endif # eq($(MAKECMDGOALS),clean)
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| 211 |
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| 212 | clean:
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| 213 | for f in . linux r0drv r0drv/linux; do rm -f $$f/*.o $$f/.*.cmd $$f/.*.flags; done
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| 214 | rm -rf .$(MOD_NAME)* .tmp_ver* $(MOD_NAME).* Module.symvers Modules.symvers modules.order
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