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 $
27 LDFLAGS := -m elf_x86_64
28 OBJCOPYFLAGS := -O binary -R .note -R .comment -S
30 CHECKFLAGS += -D__x86_64__ -m64
34 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
35 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
36 # gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
37 # will eventually. Use -mtune=generic as fallback
38 cflags-$(CONFIG_MCORE2) += \
39 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
40 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
43 cflags-y += -mno-red-zone
44 cflags-y += -mcmodel=kernel
46 cflags-y += -Wno-sign-compare
47 cflags-y += -fno-asynchronous-unwind-tables
48 ifneq ($(CONFIG_DEBUG_INFO),y)
49 # -fweb shrinks the kernel a bit, but the difference is very small
50 # it also messes up debugging, so don't use it for now.
51 #cflags-y += $(call cc-option,-fweb)
53 # -funit-at-a-time shrinks the kernel .text considerably
54 # unfortunately it makes reading oopses harder.
55 cflags-y += $(call cc-option,-funit-at-a-time)
56 # prevent gcc from generating any FP code by mistake
57 cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
58 # this works around some issues with generating unwind tables in older gccs
59 # newer gccs do it by default
60 cflags-y += -maccumulate-outgoing-args
62 # do binutils support CFI?
63 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
64 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
66 # is .cfi_signal_frame supported too?
67 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
68 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
70 cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
71 cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
73 KBUILD_CFLAGS += $(cflags-y)
74 CFLAGS_KERNEL += $(cflags-kernel-y)
77 head-y := arch/x86/kernel/head_64.o arch/x86/kernel/head64.o arch/x86/kernel/init_task_64.o
79 libs-y += arch/x86/lib/
80 core-y += arch/x86/kernel/ \
84 core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/
85 drivers-$(CONFIG_PCI) += arch/x86/pci/
86 drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
90 PHONY += bzImage bzlilo install archmrproper \
91 fdimage fdimage144 fdimage288 isoimage archclean
93 #Default target when executing "make"
96 BOOTIMAGE := arch/x86/boot/bzImage
97 KBUILD_IMAGE := $(BOOTIMAGE)
100 $(Q)mkdir -p $(objtree)/arch/x86_64/boot
101 $(Q)ln -fsn $(objtree)/arch/x86/boot/bzImage $(objtree)/arch/x86_64/boot/bzImage
102 $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
105 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
108 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
110 fdimage fdimage144 fdimage288 isoimage: vmlinux
111 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
113 install: vdso_install
114 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
117 ifeq ($(CONFIG_IA32_EMULATION),y)
118 $(Q)$(MAKE) $(build)=arch/x86/ia32 $@
120 $(Q)$(MAKE) $(build)=arch/x86/vdso $@
123 $(Q)rm -rf $(objtree)/arch/x86_64/boot
124 $(Q)$(MAKE) $(clean)=$(boot)
127 echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
128 echo ' install - Install kernel using'
129 echo ' (your) ~/bin/installkernel or'
130 echo ' (distribution) /sbin/installkernel or'
131 echo ' install to $$(INSTALL_PATH) and run lilo'
132 echo ' bzdisk - Create a boot floppy in /dev/fd0'
133 echo ' fdimage - Create a boot floppy image'
134 echo ' isoimage - Create a boot CD-ROM image'
137 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
138 arch/$(ARCH)/boot/image.iso \
139 arch/$(ARCH)/boot/mtools.conf