VirtualBox

source: vbox/trunk/src/VBox/Installer/linux/Makefile-footer.gmk@ 103131

Last change on this file since 103131 was 100196, checked in by vboxsync, 16 months ago

*: Some of the easy build fixes for linux.arm64 not warranting their own commit, bugref:10457 [fix for ancient versions of make]

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  • Property svn:keywords set to Author Date Id Revision
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1# $Id: Makefile-footer.gmk 100196 2023-06-16 09:31:55Z vboxsync $
2## @file
3# VirtualBox Guest Additions kernel module Makefile, common parts.
4#
5# See Makefile-header.gmk for details of how to use this.
6#
7
8#
9# Copyright (C) 2006-2023 Oracle and/or its affiliates.
10#
11# This file is part of VirtualBox base platform packages, as
12# available from https://www.virtualbox.org.
13#
14# This program is free software; you can redistribute it and/or
15# modify it under the terms of the GNU General Public License
16# as published by the Free Software Foundation, in version 3 of the
17# License.
18#
19# This program is distributed in the hope that it will be useful, but
20# WITHOUT ANY WARRANTY; without even the implied warranty of
21# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22# General Public License for more details.
23#
24# You should have received a copy of the GNU General Public License
25# along with this program; if not, see <https://www.gnu.org/licenses>.
26#
27# SPDX-License-Identifier: GPL-3.0-only
28#
29
30VBOXMOD_0_TARGET = $(VBOXMOD_NAME)
31
32KBUILD_VERBOSE ?= 1 # Variable belongs to our kBuild, not the linux one.
33VBOX_LNX_VERBOSE = $(if $(KBUILD_VERBOSE),1,)
34
35#
36# Compiler options
37#
38VBOXMOD_0_KFLAGS := -D__KERNEL__ -DMODULE -DRT_WITHOUT_PRAGMA_ONCE $(addprefix -D,$(VBOXMOD_DEFS))
39ifeq ($(VBOX_KBUILD_TARGET_ARCH),amd64)
40VBOXMOD_0_KFLAGS += -DRT_ARCH_AMD64
41else
42 ifeq ($(VBOX_KBUILD_TARGET_ARCH),x86)
43 VBOXMOD_0_KFLAGS += -DRT_ARCH_X86
44 else
45 ifeq ($(VBOX_KBUILD_TARGET_ARCH),arm64)
46 VBOXMOD_0_KFLAGS += -DRT_ARCH_ARM64
47 else
48 ifeq ($(VBOX_KBUILD_TARGET_ARCH),arm32)
49 VBOXMOD_0_KFLAGS += -DRT_ARCH_ARM32
50 else
51 $(error The variable VBOX_KBUILD_TARGET_ARCH doesn't contain any of the following: amd64, x86, arm64, arm32)
52 endif
53 endif
54 endif
55endif
56
57ifeq ($(VBOX_KBUILD_TYPE),debug)
58# The -Wno-array-bounds is because of a bug in gcc 4.something, see
59# https://sourceware.org/bugzilla/show_bug.cgi?id=10001
60 VBOXMOD_0_KFLAGS += -DDEBUG -DDEBUG_$(subst $(subst _, ,_),_,$(USERNAME)) -DDEBUG_USERNAME=$(subst $(subst _, ,_),_,$(USERNAME))
61 ifeq ($(shell expr $(KERN_VER) : '[23]\.'),0)
62 VBOXMOD_0_KFLAGS += -Werror -Wall -Wno-array-bounds
63# clang objects to calls to __builtin_frame_address with a non-zero argument
64# on general principles in -Wall mode. The x86 linux kernel has two such calls
65# in the thread_info.h / arch_within_stack_frames(), though probably safe.
66 ifndef ($(LLVM),) # (This is how the Linux root Makefile (since 5.7) does the test.)
67 VBOXMOD_0_KFLAGS += -Wno-frame-address
68 endif
69 endif
70endif
71
72ifeq ($(VBOX_KERN_GROKS_EXTMOD),)
73#
74# Pre 2.6.6
75#
76# Note: While pre 2.6.6 kernels could also do "proper" builds from kbuild, the
77# make script needed to support it was somewhat different from 2.6. Since this
78# script works and pre-2.6.6 is not a moving target we will not try do do things
79# the "proper" way.
80#
81VBOXMOD_EXT := o
82
83 ifeq ($(VBOX_KBUILD_TARGET_ARCH),amd64)
84VBOXMOD_0_KFLAGS += -mcmodel=kernel
85 endif
86 ifeq ($(KERN_VERSION),24)
87VBOXMOD_0_KFLAGS += -DVBOX_LINUX_2_4
88 endif
89
90CFLAGS := -O2 $(VBOXMOD_CFLAGS) $(addprefix -I,$(KERN_INCL) $(VBOXMOD_INCL)) $(VBOXMOD_0_KFLAGS) $(KDEBUG)
91
92# 2.4 Module linking
93$(VBOXMOD_0_TARGET).$(VBOXMOD_EXT): $(VBOXMOD_OBJS)
94 $(LD) -o $@ -r $(VBOXMOD_OBJS)
95
96all: $(VBOXMOD_0_TARGET)
97$(VBOXMOD_0_TARGET): $(VBOXMOD_0_TARGET).$(VBOXMOD_EXT)
98
99install: $(VBOXMOD_0_TARGET)
100 @mkdir -p $(MODULE_DIR); \
101 install -m 0644 -o root -g root $(VBOXMOD_0_TARGET).$(VBOXMOD_EXT) $(MODULE_DIR); \
102 PATH="$(PATH):/bin:/sbin" depmod -a; sync
103
104clean:
105 for f in $(sort $(dir $(VBOXMOD_OBJS))); do rm -f $$f/*.o $$f/.*.cmd $$f/.*.flags; done
106 rm -rf .$(VBOXMOD_NAME)* .tmp_ver* $(VBOXMOD_NAME).* Modules.symvers modules.order
107
108.PHONY: all $(VBOXMOD_0_TARGET) install clean
109
110else # VBOX_KERN_GROKS_EXTMOD
111#
112# 2.6.6 and later
113#
114VBOXMOD_EXT := ko
115
116# build defs
117EXTRA_CFLAGS += $(VBOXMOD_CFLAGS) $(addprefix -I,$(KERN_INCL) $(VBOXMOD_INCL)) $(VBOXMOD_0_KFLAGS) $(KDEBUG)
118$(VBOXMOD_0_TARGET)-y := $(VBOXMOD_OBJS)
119obj-m += $(VBOXMOD_0_TARGET).o
120
121# Trigger parallel make job.
122 ifndef VBOX_NOJOBS
123JOBS := $(shell (getconf _NPROCESSORS_ONLN || grep -Ec '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
124 ifeq ($(JOBS),0)
125 override JOBS := 1
126 endif
127 else
128JOBS :=
129 endif
130
131VBOX_SUBDIR_VAR=$(if $(VBOX_KERN_GROKS_SUBDIRS),SUBDIRS,M)
132
133# OL/UEK: CONFIG_MODULE_SIG= disables module signing for external modules.
134# Ubuntu 18.04.3: CONFIG_MODULE_SIG_ALL= disables signing of all modules.
135# We disable signing because we don't have any private key and want to leave
136# the key handling and secure boot config to the user.
137 ifndef VBOX_ALLOW_MODULE_SIGNING
138VBOX_DISABLE_SIGN=CONFIG_MODULE_SIG= CONFIG_MODULE_SIG_ALL=
139 endif
140
141# rules:
142all: $(VBOXMOD_0_TARGET)
143
144$(VBOXMOD_0_TARGET):
145 $(MAKE) V=$(VBOX_LNX_VERBOSE) $(VBOX_DISABLE_SIGN) -C $(KERN_DIR) $(VBOX_SUBDIR_VAR)=$(CURDIR) SRCROOT=$(CURDIR) $(if $(JOBS),-j$(JOBS),) modules
146
147install: $(VBOXMOD_0_TARGET)
148 $(MAKE) V=$(VBOX_LNX_VERBOSE) $(VBOX_DISABLE_SIGN) -C $(KERN_DIR) $(VBOX_SUBDIR_VAR)=$(CURDIR) SRCROOT=$(CURDIR) INSTALL_MOD_PATH=$(INSTALL_MOD_PATH) INSTALL_MOD_DIR=$(INSTALL_MOD_DIR) modules_install
149
150modules_install: install
151
152clean:
153 $(MAKE) V=$(VBOX_LNX_VERBOSE) $(VBOX_DISABLE_SIGN) -C $(KERN_DIR) $(VBOX_SUBDIR_VAR)=$(CURDIR) SRCROOT=$(CURDIR) clean
154
155.PHONY: all $(VBOXMOD_0_TARGET) install modules_install clean
156endif # VBOX_KERN_GROKS_EXTMOD
157
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