LXR linux/arch/x86/Makefile

   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# BITS is used as extension for files which are available in a 32 bit
  25# and a 64 bit version to simplify shared Makefiles.
  26# e.g.: obj-y += foo_$(BITS).o
  27BITS := 64
  28export BITS
  29
  30LDFLAGS         := -m elf_x86_64
  31OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  32LDFLAGS_vmlinux :=
  33CHECKFLAGS      += -D__x86_64__ -m64
  34
  35cflags-y        :=
  36cflags-kernel-y :=
  37cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
  38cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
  39# gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
  40# will eventually. Use -mtune=generic as fallback
  41cflags-$(CONFIG_MCORE2) += \
  42        $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
  43cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
  44
  45cflags-y += -m64
  46cflags-y += -mno-red-zone
  47cflags-y += -mcmodel=kernel
  48cflags-y += -pipe
  49cflags-y += -Wno-sign-compare
  50cflags-y += -fno-asynchronous-unwind-tables
  51ifneq ($(CONFIG_DEBUG_INFO),y)
  52# -fweb shrinks the kernel a bit, but the difference is very small
  53# it also messes up debugging, so don't use it for now.
  54#cflags-y += $(call cc-option,-fweb)
  55endif
  56# -funit-at-a-time shrinks the kernel .text considerably
  57# unfortunately it makes reading oopses harder.
  58cflags-y += $(call cc-option,-funit-at-a-time)
  59# prevent gcc from generating any FP code by mistake
  60cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
  61# this works around some issues with generating unwind tables in older gccs
  62# newer gccs do it by default
  63cflags-y += -maccumulate-outgoing-args
  64
  65# do binutils support CFI?
  66cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  67KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset rsp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  68
  69# is .cfi_signal_frame supported too?
  70cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  71KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  72
  73cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector )
  74cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all )
  75
  76KBUILD_CFLAGS += $(cflags-y)
  77CFLAGS_KERNEL += $(cflags-kernel-y)
  78KBUILD_AFLAGS += -m64
  79
  80head-y := arch/x86/kernel/head_64.o arch/x86/kernel/head64.o arch/x86/kernel/init_task.o
  81
  82libs-y                                  += arch/x86/lib/
  83core-y                                  += arch/x86/kernel/ \
  84                                           arch/x86/mm/ \
  85                                           arch/x86/crypto/ \
  86                                           arch/x86/vdso/
  87core-$(CONFIG_IA32_EMULATION)           += arch/x86/ia32/
  88drivers-$(CONFIG_PCI)                   += arch/x86/pci/
  89drivers-$(CONFIG_OPROFILE)              += arch/x86/oprofile/
  90
  91boot := arch/x86/boot
  92
  93PHONY += bzImage bzlilo install archmrproper \
  94         fdimage fdimage144 fdimage288 isoimage archclean
  95
  96#Default target when executing "make"
  97all: bzImage
  98
  99BOOTIMAGE                     := arch/x86/boot/bzImage
 100KBUILD_IMAGE                  := $(BOOTIMAGE)
 101
 102bzImage: vmlinux
 103        $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
 104        $(Q)mkdir -p $(objtree)/arch/x86_64/boot
 105        $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/x86_64/boot/bzImage
 106
 107bzlilo: vmlinux
 108        $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
 109
 110bzdisk: vmlinux
 111        $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
 112
 113fdimage fdimage144 fdimage288 isoimage: vmlinux
 114        $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 115
 116install: vdso_install
 117        $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@ 
 118
 119vdso_install:
 120ifeq ($(CONFIG_IA32_EMULATION),y)
 121        $(Q)$(MAKE) $(build)=arch/x86/ia32 $@
 122endif
 123        $(Q)$(MAKE) $(build)=arch/x86/vdso $@
 124
 125archclean:
 126        $(Q)rm -rf $(objtree)/arch/x86_64/boot
 127        $(Q)$(MAKE) $(clean)=$(boot)
 128
 129define archhelp
 130  echo  '* bzImage      - Compressed kernel image (arch/x86/boot/bzImage)'
 131  echo  '  install      - Install kernel using'
 132  echo  '                  (your) ~/bin/installkernel or'
 133  echo  '                  (distribution) /sbin/installkernel or'
 134  echo  '                  install to $$(INSTALL_PATH) and run lilo'
 135  echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 136  echo  '  fdimage      - Create a boot floppy image'
 137  echo  '  isoimage     - Create a boot CD-ROM image'
 138endef
 139
 140CLEAN_FILES += arch/x86/boot/fdimage \
 141               arch/x86/boot/image.iso \
 142               arch/x86/boot/mtools.conf
 143
 144
 145