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