1. 根目录:
2. arch
3. sparc
4. Makefile

#
# sparc/Makefile
#
# Makefile for the architecture dependent flags and dependencies on the
# Sparc and sparc64.
#
# Copyright (C) 1994,1996,1998 David S. Miller (davem@caip.rutgers.edu)
# Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)

# We are not yet configured - so test on arch
ifeq ($(ARCH),sparc)
        KBUILD_DEFCONFIG := sparc32_defconfig
else
        KBUILD_DEFCONFIG := sparc64_defconfig
endif

ifeq ($(CONFIG_SPARC32),y)
#####
# sparc32
#

CHECKFLAGS     += -D__sparc__
LDFLAGS        := -m elf32_sparc
export BITS    := 32
UTS_MACHINE    := sparc

KBUILD_CFLAGS  += -m32 -mcpu=v8 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7
KBUILD_AFLAGS  += -m32 -Wa,-Av8

else
#####
# sparc64
#

CHECKFLAGS    += -D__sparc__ -D__sparc_v9__ -D__arch64__ -m64
LDFLAGS       := -m elf64_sparc
export BITS   := 64
UTS_MACHINE   := sparc64

KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow
KBUILD_CFLAGS += -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare
KBUILD_CFLAGS += -Wa,--undeclared-regs
KBUILD_CFLAGS += $(call cc-option,-mtune=ultrasparc3)
KBUILD_AFLAGS += -m64 -mcpu=ultrasparc -Wa,--undeclared-regs

ifeq ($(CONFIG_MCOUNT),y)
  KBUILD_CFLAGS += -pg
endif

endif

head-y                 := arch/sparc/kernel/head_$(BITS).o

# See arch/sparc/Kbuild for the core part of the kernel
core-y                 += arch/sparc/

libs-y                 += arch/sparc/prom/
libs-y                 += arch/sparc/lib/

drivers-$(CONFIG_PM) += arch/sparc/power/
drivers-$(CONFIG_OPROFILE)	+= arch/sparc/oprofile/

boot := arch/sparc/boot

# Default target
all: zImage

image zImage uImage tftpboot.img vmlinux.aout: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

archclean:
	$(Q)$(MAKE) $(clean)=$(boot)

# This is the image used for packaging
KBUILD_IMAGE := $(boot)/zImage

# Don't use tabs in echo arguments.
ifeq ($(ARCH),sparc)
define archhelp
  echo  '* image        - kernel image ($(boot)/image)'
  echo  '* zImage       - stripped kernel image ($(boot)/zImage)'
  echo  '  uImage       - U-Boot SPARC32 Image (only for LEON)'
  echo  '  tftpboot.img - image prepared for tftp'
endef
else
define archhelp
  echo  '* vmlinux      - standard sparc64 kernel'
  echo  '* zImage       - stripped and compressed sparc64 kernel ($(boot)/zImage)'
  echo  '  vmlinux.aout - a.out kernel for sparc64'
  echo  '  tftpboot.img - image prepared for tftp'
endef
endif