VirtualBox

source: vbox/trunk/src/VBox/Installer/linux/Makefile-footer.gmk@ 79804

Last change on this file since 79804 was 78133, checked in by vboxsync, 6 years ago

linux/Makefile-footer.gmk: Check for VBOX_NOJOBS before creating JOBS. This allows passing -jxx to the top level Makefile without causing warnings / overrides in recursive-make jobs. bugref:9172

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1# $Id: Makefile-footer.gmk 78133 2019-04-16 00:30:26Z 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) 2006-2019 Oracle Corporation
10#
11# This file is part of VirtualBox Open Source Edition (OSE), as
12# available from http://www.virtualbox.org. This file is free software;
13# you can redistribute it and/or modify it under the terms of the GNU
14# General Public License (GPL) as published by the Free Software
15# Foundation, in version 2 as it comes in the "COPYING" file of the
16# VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17# hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18#
19
20VBOXMOD_0_TARGET = $(VBOXMOD_NAME)
21
22KBUILD_VERBOSE ?= 1 # Variable belongs to our kBuild, not the linux one.
23VBOX_LNX_VERBOSE = $(if $(KBUILD_VERBOSE),1,)
24
25#
26# Compiler options
27#
28VBOXMOD_0_KFLAGS := -D__KERNEL__ -DMODULE -DRT_WITHOUT_PRAGMA_ONCE $(addprefix -D,$(VBOXMOD_DEFS))
29ifeq ($(BUILD_TARGET_ARCH),amd64)
30VBOXMOD_0_KFLAGS += -DRT_ARCH_AMD64
31else
32VBOXMOD_0_KFLAGS += -DRT_ARCH_X86
33endif
34
35ifeq ($(BUILD_TYPE),debug)
36# The -Wno-array-bounds is because of a bug in gcc 4.something, see
37# https://sourceware.org/bugzilla/show_bug.cgi?id=10001
38 VBOXMOD_0_KFLAGS += -DDEBUG -DDEBUG_$(subst $(subst _, ,_),_,$(USERNAME)) -DDEBUG_USERNAME=$(subst $(subst _, ,_),_,$(USERNAME))
39 ifeq ($(shell expr $(KERN_VER) : '[23]\.'),0)
40 VBOXMOD_0_KFLAGS += -Werror -Wall -Wno-array-bounds
41 endif
42endif
43
44ifeq ($(VBOX_KERN_GROKS_EXTMOD),)
45#
46# Pre 2.6.6
47#
48# Note: While pre 2.6.6 kernels could also do "proper" builds from kbuild, the
49# make script needed to support it was somewhat different from 2.6. Since this
50# script works and pre-2.6.6 is not a moving target we will not try do do things
51# the "proper" way.
52#
53VBOXMOD_EXT := o
54
55 ifeq ($(BUILD_TARGET_ARCH),amd64)
56VBOXMOD_0_KFLAGS += -mcmodel=kernel
57 endif
58 ifeq ($(KERN_VERSION),24)
59VBOXMOD_0_KFLAGS += -DVBOX_LINUX_2_4
60 endif
61
62CFLAGS := -O2 $(VBOXMOD_CFLAGS) $(addprefix -I,$(KERN_INCL) $(VBOXMOD_INCL)) $(VBOXMOD_0_KFLAGS) $(KDEBUG)
63
64# 2.4 Module linking
65$(VBOXMOD_0_TARGET).$(VBOXMOD_EXT): $(VBOXMOD_OBJS)
66 $(LD) -o $@ -r $(VBOXMOD_OBJS)
67
68all: $(VBOXMOD_0_TARGET)
69$(VBOXMOD_0_TARGET): $(VBOXMOD_0_TARGET).$(VBOXMOD_EXT)
70
71install: $(VBOXMOD_0_TARGET)
72 @mkdir -p $(MODULE_DIR); \
73 install -m 0644 -o root -g root $(VBOXMOD_0_TARGET).$(VBOXMOD_EXT) $(MODULE_DIR); \
74 PATH="$(PATH):/bin:/sbin" depmod -a; sync
75
76clean:
77 for f in $(sort $(dir $(VBOXMOD_OBJS))); do rm -f $$f/*.o $$f/.*.cmd $$f/.*.flags; done
78 rm -rf .$(VBOXMOD_NAME)* .tmp_ver* $(VBOXMOD_NAME).* Modules.symvers modules.order
79
80.PHONY: all $(VBOXMOD_0_TARGET) install clean
81
82else # VBOX_KERN_GROKS_EXTMOD
83#
84# 2.6.6 and later
85#
86VBOXMOD_EXT := ko
87
88# build defs
89EXTRA_CFLAGS += $(VBOXMOD_CFLAGS) $(addprefix -I,$(KERN_INCL) $(VBOXMOD_INCL)) $(VBOXMOD_0_KFLAGS) $(KDEBUG)
90$(VBOXMOD_0_TARGET)-y := $(VBOXMOD_OBJS)
91obj-m += $(VBOXMOD_0_TARGET).o
92
93# Trigger parallel make job.
94 ifndef VBOX_NOJOBS
95JOBS := $(shell (getconf _NPROCESSORS_ONLN || grep -Ec '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
96 ifeq ($(JOBS),0)
97 override JOBS := 1
98 endif
99 else
100JOBS :=
101 endif
102
103# rules:
104all: $(VBOXMOD_0_TARGET)
105
106# OL/UEK: disable module signing for external modules -- we don't have any private key
107$(VBOXMOD_0_TARGET):
108ifneq ($(VBOX_KERN_GROKS_SUBDIRS),)
109 $(MAKE) V=$(VBOX_LNX_VERBOSE) CONFIG_MODULE_SIG= -C $(KERN_DIR) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) $(if $(JOBS),-j$(JOBS),) modules
110else
111 $(MAKE) V=$(VBOX_LNX_VERBOSE) CONFIG_MODULE_SIG= -C $(KERN_DIR) M=$(CURDIR) SRCROOT=$(CURDIR) $(if $(JOBS),-j$(JOBS),) modules
112endif
113
114install: $(VBOXMOD_0_TARGET)
115ifneq ($(VBOX_KERN_GROKS_SUBDIRS),)
116 $(MAKE) V=$(VBOX_LNX_VERBOSE) CONFIG_MODULE_SIG= -C $(KERN_DIR) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) INSTALL_MOD_PATH=$(INSTALL_MOD_PATH) INSTALL_MOD_DIR=$(INSTALL_MOD_DIR) modules_install
117else
118 $(MAKE) V=$(VBOX_LNX_VERBOSE) CONFIG_MODULE_SIG= -C $(KERN_DIR) M=$(CURDIR) SRCROOT=$(CURDIR) INSTALL_MOD_PATH=$(INSTALL_MOD_PATH) INSTALL_MOD_DIR=$(INSTALL_MOD_DIR) modules_install
119endif
120
121modules_install: install
122
123clean:
124ifneq ($(VBOX_KERN_GROKS_SUBDIRS),)
125 $(MAKE) V=$(VBOX_LNX_VERBOSE) CONFIG_MODULE_SIG= -C $(KERN_DIR) SUBDIRS=$(CURDIR) SRCROOT=$(CURDIR) clean
126else
127 $(MAKE) V=$(VBOX_LNX_VERBOSE) CONFIG_MODULE_SIG= -C $(KERN_DIR) M=$(CURDIR) SRCROOT=$(CURDIR) clean
128endif
129
130.PHONY: all $(VBOXMOD_0_TARGET) install modules_install clean
131endif # VBOX_KERN_GROKS_EXTMOD
132
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