| 1 | #
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| 2 | # Makefile for the VirtualBox Linux Host Virtual Network Adapter 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) 2006-2010 Oracle Corporation
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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.virtualbox.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 |
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| 19 | #
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| 20 | # First, figure out which architecture we're targeting and the build type.
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| 21 | # (We have to support basic cross building (ARCH=i386|x86_64).)
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| 22 | # While at it, warn about BUILD_* vars found to help with user problems.
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| 23 | #
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| 24 | ifeq ($(filter-out x86_64 amd64 AMD64,$(shell uname -m)),)
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| 25 | BUILD_TARGET_ARCH_DEF := amd64
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| 26 | else
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| 27 | BUILD_TARGET_ARCH_DEF := x86
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| 28 | endif
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| 29 | ifneq ($(filter-out amd64 x86,$(BUILD_TARGET_ARCH)),)
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| 30 | $(warning Ignoring unknown BUILD_TARGET_ARCH value '$(BUILD_TARGET_ARCH)'.)
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| 31 | BUILD_TARGET_ARCH :=
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| 32 | endif
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| 33 | ifeq ($(BUILD_TARGET_ARCH),)
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| 34 | ifeq ($(ARCH),x86_64)
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| 35 | BUILD_TARGET_ARCH := amd64
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| 36 | else
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| 37 | ifeq ($(ARCH),i386)
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| 38 | BUILD_TARGET_ARCH := x86
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| 39 | else
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| 40 | BUILD_TARGET_ARCH := $(BUILD_TARGET_ARCH_DEF)
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| 41 | endif
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| 42 | endif
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| 43 | else
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| 44 | ifneq ($(BUILD_TARGET_ARCH),$(BUILD_TARGET_ARCH_DEF))
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| 45 | $(warning Using BUILD_TARGET_ARCH='$(BUILD_TARGET_ARCH)' from the $(origin BUILD_TARGET_ARCH).)
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| 46 | endif
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| 47 | endif
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| 48 |
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| 49 | ifneq ($(filter-out release profile debug strict,$(BUILD_TYPE)),)
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| 50 | $(warning Ignoring unknown BUILD_TYPE value '$(BUILD_TYPE)'.)
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| 51 | BUILD_TYPE :=
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| 52 | endif
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| 53 | ifeq ($(BUILD_TYPE),)
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| 54 | BUILD_TYPE := release
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| 55 | else
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| 56 | ifneq ($(BUILD_TYPE),release)
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| 57 | $(warning Using BUILD_TYPE='$(BUILD_TYPE)' from the $(origin BUILD_TYPE).)
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| 58 | endif
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| 59 | endif
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| 60 |
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| 61 | # override is required by the Debian guys
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| 62 | override MODULE = vboxnetadp
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| 63 | OBJS = \
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| 64 | linux/VBoxNetAdp-linux.o \
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| 65 | VBoxNetAdp.o
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| 66 | ifeq ($(BUILD_TARGET_ARCH),x86)
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| 67 | OBJS += math/gcc/divdi3.o \
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| 68 | math/gcc/moddi3.o \
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| 69 | math/gcc/qdivrem.o \
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| 70 | math/gcc/udivdi3.o \
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| 71 | math/gcc/divdi3.o \
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| 72 | math/gcc/umoddi3.o
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| 73 | endif
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| 74 |
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| 75 | ifeq ($(KERNELRELEASE),)
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| 76 |
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| 77 | #
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| 78 | # building from this directory
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| 79 | #
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| 80 |
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| 81 | # kernel base directory
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| 82 | ifndef KERN_DIR
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| 83 | # build for the current kernel, version check
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| 84 | KERN_DIR := /lib/modules/$(shell uname -r)/build
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| 85 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 86 | KERN_DIR := /usr/src/linux
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| 87 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 88 | $(error Error: unable to find the sources of your current Linux kernel. \
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| 89 | Specify KERN_DIR=<directory> and run Make again)
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| 90 | endif
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| 91 | $(warning Warning: using /usr/src/linux as the source directory of your \
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| 92 | Linux kernel. If this is not correct, specify \
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| 93 | KERN_DIR=<directory> and run Make again.)
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| 94 | endif
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| 95 | # check if versions match -- works only for later 2.6 kernels
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| 96 | VBOX_KERN_VER := $(shell $(MAKE) -sC $(KERN_DIR) --no-print-directory kernelrelease 2> /dev/null || true)
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| 97 | ifneq ($(VBOX_KERN_VER),)
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| 98 | ifneq ($(VBOX_KERN_VER),$(shell uname -r))
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| 99 | $(error Error: /usr/src/linux (version $(VBOX_KERN_VER)) does not match \
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| 100 | the current kernel (version $(shell uname -r)))
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| 101 | endif
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| 102 | endif
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| 103 | else
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| 104 | # build for a dedicated kernel, no version check
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| 105 | ifneq ($(shell if test -d $(KERN_DIR); then echo yes; fi),yes)
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| 106 | $(error Error: KERN_DIR does not point to a directory)
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| 107 | endif
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| 108 | endif
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| 109 |
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| 110 | # includes
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| 111 | ifndef KERN_INCL
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| 112 | KERN_INCL = $(KERN_DIR)/include
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| 113 | endif
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| 114 | ifneq ($(shell if test -d $(KERN_INCL); then echo yes; fi),yes)
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| 115 | $(error Error: unable to find the include directory for your current Linux \
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| 116 | kernel. Specify KERN_INCL=<directory> and run Make again)
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| 117 | endif
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| 118 |
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| 119 | # module install dir, only for current kernel
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| 120 | ifneq ($(filter install install_rpm,$(MAKECMDGOALS)),)
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| 121 | ifndef MODULE_DIR
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| 122 | MODULE_DIR_TST := /lib/modules/$(shell uname -r)
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| 123 | ifeq ($(shell if test -d $(MODULE_DIR_TST); then echo yes; fi),yes)
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| 124 | MODULE_DIR := $(MODULE_DIR_TST)/misc
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| 125 | else
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| 126 | $(error Unable to find the folder to install the support driver to)
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| 127 | endif
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| 128 | endif # MODULE_DIR unspecified
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| 129 | endif
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| 130 |
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| 131 | else # neq($(KERNELRELEASE),)
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| 132 |
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| 133 | #
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| 134 | # building from kbuild (make -C <kernel_directory> M=`pwd`)
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| 135 | #
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| 136 |
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| 137 | endif # neq($(KERNELRELEASE),)
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| 138 |
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| 139 | # debug - show guesses.
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| 140 | ifdef DEBUG
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| 141 | $(warning dbg: KERN_DIR = $(KERN_DIR))
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| 142 | $(warning dbg: KERN_INCL = $(KERN_INCL))
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| 143 | $(warning dbg: MODULE_DIR = $(MODULE_DIR))
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| 144 | endif
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| 145 |
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| 146 | KBUILD_VERBOSE ?= 1
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| 147 |
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| 148 | #
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| 149 | # Compiler options
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| 150 | #
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| 151 | ifndef INCL
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| 152 | INCL := $(addprefix -I,$(KERN_INCL) $(EXTRA_INCL))
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| 153 | ifndef KBUILD_EXTMOD
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| 154 | KBUILD_EXTMOD := $(shell pwd)
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| 155 | endif
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| 156 | INCL += $(addprefix -I$(KBUILD_EXTMOD),/ /include /r0drv/linux)
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| 157 | INCL += $(addprefix -I$(KBUILD_EXTMOD)/vboxnetadp,/ /include /r0drv/linux)
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| 158 | export INCL
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| 159 | endif
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| 160 | KFLAGS := -D__KERNEL__ -DMODULE -DRT_OS_LINUX -DIN_RING0 -DIN_RT_R0 \
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| 161 | -DIN_SUP_R0 -DVBOX -DRT_WITH_VBOX -DVBOX_WITH_HARDENING
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| 162 | ifdef VBOX_REDHAT_KABI
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| 163 | KFLAGS += -DVBOX_REDHAT_KABI
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| 164 | endif
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| 165 | ifeq ($(BUILD_TARGET_ARCH),amd64)
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| 166 | KFLAGS += -DRT_ARCH_AMD64
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| 167 | else
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| 168 | KFLAGS += -DRT_ARCH_X86
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| 169 | endif
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| 170 | # must be consistent with Config.kmk!
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| 171 | KFLAGS += -DVBOX_WITH_64_BITS_GUESTS
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| 172 | ifeq ($(BUILD_TYPE),debug)
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| 173 | KFLAGS += -DDEBUG -DDEBUG_$(USER) -g
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| 174 | # IPRT_DEBUG_SEMS indicates thread wrt sems state via the comm field.
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| 175 | #KFLAGS += -DIPRT_DEBUG_SEMS
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| 176 | endif
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| 177 |
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| 178 | # By default we use remap_pfn_range() kernel API to make kernel pages
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| 179 | # visible for userland. Unfortuately, it leads to situation that
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| 180 | # during debug session all structures on that page (such as PVM pointer)
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| 181 | # are not accessible to the debugger (see #3214).
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| 182 | # This code enables experimental support
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| 183 | # for vm_insert_page() kernel API, allowing to export kernel pages
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| 184 | # to the userland in more debugger-friendly way. Due to stability
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| 185 | # concerns, not enabled by default yet.
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| 186 | ifdef VBOX_USE_INSERT_PAGE
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| 187 | KFLAGS += -DVBOX_USE_INSERT_PAGE
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| 188 | endif
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| 189 |
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| 190 | MODULE_EXT := ko
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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) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) -C $(KERN_DIR) modules
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| 202 |
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| 203 | install: $(MODULE)
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| 204 | @mkdir -p $(MODULE_DIR); \
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| 205 | install -m 0664 -o root -g root $(MODULE).$(MODULE_EXT) $(MODULE_DIR); \
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| 206 | PATH="$(PATH):/bin:/sbin" depmod -a; \
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| 207 | rm -f /etc/vbox/module_not_compiled
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| 208 |
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| 209 | install_rpm: $(MODULE)
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| 210 | @mkdir -p $(MODULE_DIR); \
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| 211 | install -m 0664 $(MODULE).$(MODULE_EXT) $(MODULE_DIR)
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| 212 |
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| 213 | clean:
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| 214 | $(MAKE) KBUILD_VERBOSE=$(KBUILD_VERBOSE) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) -C $(KERN_DIR) clean
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