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 #
  25 # early bootup linking needs 32bit. You can either use real 32bit tools
  26 # here or 64bit tools in 32bit mode.
  27 #
  28 IA32_CC := $(CC) $(CPPFLAGS) -m32 -O2 -fomit-frame-pointer
  29 IA32_LD := $(LD) -m elf_i386
  30 IA32_AS := $(CC) $(AFLAGS) -m32 -Wa,--32 -traditional -c
  31 IA32_OBJCOPY := $(CROSS_COMPILE)objcopy
  32 IA32_CPP := $(CROSS_COMPILE)gcc -m32 -E
  33 export IA32_CC IA32_LD IA32_AS IA32_OBJCOPY IA32_CPP
  34
  35
  36 LDFLAGS         := -m elf_x86_64
  37 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  38 LDFLAGS_vmlinux := -e stext
  39
  40 CHECKFLAGS      += -D__x86_64__ -m64
  41
  42 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
  43 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
  44 CFLAGS += $(cflags-y)
  45
  46 CFLAGS += -mno-red-zone
  47 CFLAGS += -mcmodel=kernel
  48 CFLAGS += -pipe
  49 # this makes reading assembly source easier, but produces worse code
  50 # actually it makes the kernel smaller too.
  51 CFLAGS += -fno-reorder-blocks
  52 CFLAGS += -Wno-sign-compare
  53 ifneq ($(CONFIG_DEBUG_INFO),y)
  54 CFLAGS += -fno-asynchronous-unwind-tables
  55 # -fweb shrinks the kernel a bit, but the difference is very small
  56 # it also messes up debugging, so don't use it for now.
  57 #CFLAGS += $(call cc-option,-fweb)
  58 endif
  59 # -funit-at-a-time shrinks the kernel .text considerably
  60 # unfortunately it makes reading oopses harder.
  61 CFLAGS += $(call cc-option,-funit-at-a-time)
  62 # prevent gcc from generating any FP code by mistake
  63 CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
  64
  65 head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
  66
  67 libs-y                                  += arch/x86_64/lib/
  68 core-y                                  += arch/x86_64/kernel/ arch/x86_64/mm/
  69 core-$(CONFIG_IA32_EMULATION)           += arch/x86_64/ia32/
  70 drivers-$(CONFIG_PCI)                   += arch/x86_64/pci/
  71 drivers-$(CONFIG_OPROFILE)              += arch/x86_64/oprofile/
  72
  73 boot := arch/x86_64/boot
  74
  75 .PHONY: bzImage bzlilo install archmrproper \
  76         fdimage fdimage144 fdimage288 archclean
  77
  78 #Default target when executing "make"
  79 all: bzImage
  80
  81 BOOTIMAGE                     := arch/x86_64/boot/bzImage
  82 KBUILD_IMAGE                  := $(BOOTIMAGE)
  83
  84 bzImage: vmlinux
  85         $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
  86
  87 bzlilo: vmlinux
  88         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
  89
  90 bzdisk: vmlinux
  91         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
  92
  93 install fdimage fdimage144 fdimage288: vmlinux
  94         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
  95
  96 archclean:
  97         $(Q)$(MAKE) $(clean)=$(boot)
  98
  99 prepare: include/asm-$(ARCH)/offset.h
 100
 101 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 102                                    include/config/MARKER
 103
 104 include/asm-$(ARCH)/offset.h: arch/$(ARCH)/kernel/asm-offsets.s
 105         $(call filechk,gen-asm-offsets)
 106
 107 CLEAN_FILES += include/asm-$(ARCH)/offset.h
 108
 109 define archhelp
 110   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 111   echo  '  install      - Install kernel using'
 112   echo  '                  (your) ~/bin/installkernel or'
 113   echo  '                  (distribution) /sbin/installkernel or'
 114   echo  '                 install to $$(INSTALL_PATH) and run lilo'
 115 endef
 116
 117 CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf
 118
 119