Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
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
24LDFLAGS := -m elf_x86_64
25OBJCOPYFLAGS := -O binary -R .note -R .comment -S
26LDFLAGS_vmlinux :=
27CHECKFLAGS += -D__x86_64__ -m64
28
29cflags-y :=
30cflags-kernel-y :=
31cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
32cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
33# gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
34# will eventually. Use -mtune=generic as fallback
35cflags-$(CONFIG_MCORE2) += \
36 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
37cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
38
39cflags-y += -m64
40cflags-y += -mno-red-zone
41cflags-y += -mcmodel=kernel
42cflags-y += -pipe
43cflags-kernel-$(CONFIG_REORDER) += -ffunction-sections
44# this makes reading assembly source easier, but produces worse code
45# actually it makes the kernel smaller too.
46cflags-y += -fno-reorder-blocks
47cflags-y += -Wno-sign-compare
48cflags-y += -fno-asynchronous-unwind-tables
49ifneq ($(CONFIG_DEBUG_INFO),y)
50# -fweb shrinks the kernel a bit, but the difference is very small
51# it also messes up debugging, so don't use it for now.
52#cflags-y += $(call cc-option,-fweb)
53endif
54# -funit-at-a-time shrinks the kernel .text considerably
55# unfortunately it makes reading oopses harder.
56cflags-y += $(call cc-option,-funit-at-a-time)
57# prevent gcc from generating any FP code by mistake
58cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
59# this works around some issues with generating unwind tables in older gccs
60# newer gccs do it by default
61cflags-y += -maccumulate-outgoing-args
62
63# do binutils support CFI?
64cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
65AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
66
67# is .cfi_signal_frame supported too?
68cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
69AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
70
71cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
72cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
73
74CFLAGS += $(cflags-y)
75CFLAGS_KERNEL += $(cflags-kernel-y)
76AFLAGS += -m64
77
78head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
79
80libs-y += arch/x86_64/lib/
81core-y += arch/x86_64/kernel/ \
82 arch/x86_64/mm/ \
83 arch/x86_64/crypto/
84core-$(CONFIG_IA32_EMULATION) += arch/x86_64/ia32/
85drivers-$(CONFIG_PCI) += arch/x86_64/pci/
86drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
87
88boot := arch/x86_64/boot
89
90PHONY += bzImage bzlilo install archmrproper \
91 fdimage fdimage144 fdimage288 isoimage archclean
92
93#Default target when executing "make"
94all: bzImage
95
96BOOTIMAGE := arch/x86_64/boot/bzImage
97KBUILD_IMAGE := $(BOOTIMAGE)
98
99bzImage: vmlinux
100 $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
101
102bzlilo: vmlinux
103 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
104
105bzdisk: vmlinux
106 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
107
108fdimage fdimage144 fdimage288 isoimage: vmlinux
109 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
110
111install:
112 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
113
114archclean:
115 $(Q)$(MAKE) $(clean)=$(boot)
116
117define archhelp
118 echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
119 echo ' install - Install kernel using'
120 echo ' (your) ~/bin/installkernel or'
121 echo ' (distribution) /sbin/installkernel or'
122 echo ' install to $$(INSTALL_PATH) and run lilo'
123 echo ' bzdisk - Create a boot floppy in /dev/fd0'
124 echo ' fdimage - Create a boot floppy image'
125 echo ' isoimage - Create a boot CD-ROM image'
126endef
127
128CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
129 arch/$(ARCH)/boot/image.iso \
130 arch/$(ARCH)/boot/mtools.conf
131
132