tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#
2# x86_64/Makefile
3#
4# This file is included by the global makefile so that you can add your own
5# architecture-specific flags and dependencies. Remember to do have actions
6# for "archclean" and "archdep" for cleaning up and making dependencies for
7# this architecture
8#
9# This file is subject to the terms and conditions of the GNU General Public
10# License. See the file "COPYING" in the main directory of this archive
11# for more details.
12#
13# Copyright (C) 1994 by Linus Torvalds
14#
15# 19990713 Artur Skawina <skawina@geocities.com>
16# Added '-march' and '-mpreferred-stack-boundary' support
17# 20000913 Pavel Machek <pavel@suse.cz>
18# Converted for x86_64 architecture
19# 20010105 Andi Kleen, add IA32 compiler.
20# ....and later removed it again....
21#
22# $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $
23
24#
25# early bootup linking needs 32bit. You can either use real 32bit tools
26# here or 64bit tools in 32bit mode.
27#
28IA32_CC := $(CC) $(CPPFLAGS) -m32 -O2 -fomit-frame-pointer
29IA32_LD := $(LD) -m elf_i386
30IA32_AS := $(CC) $(AFLAGS) -m32 -Wa,--32 -traditional -c
31IA32_OBJCOPY := $(CROSS_COMPILE)objcopy
32IA32_CPP := $(CROSS_COMPILE)gcc -m32 -E
33export IA32_CC IA32_LD IA32_AS IA32_OBJCOPY IA32_CPP
34
35
36LDFLAGS := -m elf_x86_64
37OBJCOPYFLAGS := -O binary -R .note -R .comment -S
38LDFLAGS_vmlinux :=
39
40CHECKFLAGS += -D__x86_64__ -m64
41
42cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
43cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
44CFLAGS += $(cflags-y)
45
46CFLAGS += -mno-red-zone
47CFLAGS += -mcmodel=kernel
48CFLAGS += -pipe
49# this makes reading assembly source easier, but produces worse code
50# actually it makes the kernel smaller too.
51CFLAGS += -fno-reorder-blocks
52CFLAGS += -Wno-sign-compare
53ifneq ($(CONFIG_DEBUG_INFO),y)
54CFLAGS += -fno-asynchronous-unwind-tables
55# -fweb shrinks the kernel a bit, but the difference is very small
56# it also messes up debugging, so don't use it for now.
57#CFLAGS += $(call cc-option,-fweb)
58endif
59# -funit-at-a-time shrinks the kernel .text considerably
60# unfortunately it makes reading oopses harder.
61CFLAGS += $(call cc-option,-funit-at-a-time)
62# prevent gcc from generating any FP code by mistake
63CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
64
65head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
66
67libs-y += arch/x86_64/lib/
68core-y += arch/x86_64/kernel/ \
69 arch/x86_64/mm/ \
70 arch/x86_64/crypto/
71core-$(CONFIG_IA32_EMULATION) += arch/x86_64/ia32/
72drivers-$(CONFIG_PCI) += arch/x86_64/pci/
73drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
74
75boot := arch/x86_64/boot
76
77.PHONY: bzImage bzlilo install archmrproper \
78 fdimage fdimage144 fdimage288 archclean
79
80#Default target when executing "make"
81all: bzImage
82
83BOOTIMAGE := arch/x86_64/boot/bzImage
84KBUILD_IMAGE := $(BOOTIMAGE)
85
86bzImage: vmlinux
87 $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
88
89bzlilo: vmlinux
90 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
91
92bzdisk: vmlinux
93 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
94
95install fdimage fdimage144 fdimage288: vmlinux
96 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
97
98archclean:
99 $(Q)$(MAKE) $(clean)=$(boot)
100
101prepare: include/asm-$(ARCH)/offset.h
102
103arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
104 include/config/MARKER
105
106include/asm-$(ARCH)/offset.h: arch/$(ARCH)/kernel/asm-offsets.s
107 $(call filechk,gen-asm-offsets)
108
109CLEAN_FILES += include/asm-$(ARCH)/offset.h
110
111define archhelp
112 echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
113 echo ' install - Install kernel using'
114 echo ' (your) ~/bin/installkernel or'
115 echo ' (distribution) /sbin/installkernel or'
116 echo ' install to $$(INSTALL_PATH) and run lilo'
117endef
118
119CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf
120
121