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
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
13 # Copyright (C) 1994 by Linus Torvalds
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....
22 # $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $
24 LDFLAGS := -m elf_x86_64
25 OBJCOPYFLAGS := -O binary -R .note -R .comment -S
27 CHECKFLAGS += -D__x86_64__ -m64
31 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
32 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
33 # gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
34 # will eventually. Use -mtune=generic as fallback
35 cflags-$(CONFIG_MCORE2) += \
36 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
37 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
39 cppflags-$(CONFIG_XEN) += \
40 -D__XEN_INTERFACE_VERSION__=$(CONFIG_XEN_INTERFACE_VERSION)
41 CPPFLAGS += $(cppflags-y)
44 cflags-y += -mno-red-zone
45 cflags-y += -mcmodel=kernel
47 cflags-kernel-$(CONFIG_REORDER) += -ffunction-sections
48 # this makes reading assembly source easier, but produces worse code
49 # actually it makes the kernel smaller too.
50 cflags-y += -fno-reorder-blocks
51 cflags-y += -Wno-sign-compare
52 cflags-y += -fno-asynchronous-unwind-tables
53 ifneq ($(CONFIG_DEBUG_INFO),y)
54 # -fweb shrinks the kernel a bit, but the difference is very small
55 # it also messes up debugging, so don't use it for now.
56 #cflags-y += $(call cc-option,-fweb)
58 # -funit-at-a-time shrinks the kernel .text considerably
59 # unfortunately it makes reading oopses harder.
60 cflags-y += $(call cc-option,-funit-at-a-time)
61 # prevent gcc from generating any FP code by mistake
62 cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
63 # this works around some issues with generating unwind tables in older gccs
64 # newer gccs do it by default
65 cflags-y += -maccumulate-outgoing-args
67 # do binutils support CFI?
68 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
69 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
71 # is .cfi_signal_frame supported too?
72 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
73 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
75 cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
76 cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
79 CFLAGS_KERNEL += $(cflags-kernel-y)
82 head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
84 libs-y += arch/x86_64/lib/
85 core-y += arch/x86_64/kernel/ \
88 core-$(CONFIG_IA32_EMULATION) += arch/x86_64/ia32/
89 drivers-$(CONFIG_PCI) += arch/x86_64/pci/
90 drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
92 boot := arch/x86_64/boot
94 PHONY += bzImage bzlilo install archmrproper \
95 fdimage fdimage144 fdimage288 isoimage archclean
98 CPPFLAGS := -Iinclude$(if $(KBUILD_SRC),2)/asm/mach-xen $(CPPFLAGS)
99 head-y := arch/x86_64/kernel/head-xen.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
100 LDFLAGS_vmlinux := -e _start
101 boot := arch/i386/boot-xen
103 #Default target when executing "make"
107 $(Q)$(MAKE) $(build)=$(boot) $@
110 $(Q)$(MAKE) $(build)=$(boot) XENGUEST=$(XENGUEST) $@
112 #Default target when executing "make"
115 BOOTIMAGE := arch/x86_64/boot/bzImage
116 KBUILD_IMAGE := $(BOOTIMAGE)
119 $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
122 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
125 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
127 fdimage fdimage144 fdimage288 isoimage: vmlinux
128 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
131 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
135 $(Q)$(MAKE) $(clean)=$(boot)
138 echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
139 echo ' install - Install kernel using'
140 echo ' (your) ~/bin/installkernel or'
141 echo ' (distribution) /sbin/installkernel or'
142 echo ' install to $$(INSTALL_PATH) and run lilo'
143 echo ' bzdisk - Create a boot floppy in /dev/fd0'
144 echo ' fdimage - Create a boot floppy image'
145 echo ' isoimage - Create a boot CD-ROM image'
148 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
149 arch/$(ARCH)/boot/image.iso \
150 arch/$(ARCH)/boot/mtools.conf