arch/x86/Makefile - kernel/msm-4.19 - Gitiles

 # Unified Makefile for i386 and x86_64

 # select defconfig based on actual architecture
 ifeq ($(ARCH),x86)
         KBUILD_DEFCONFIG := i386_defconfig
 else
         KBUILD_DEFCONFIG := $(ARCH)_defconfig
 endif

 # BITS is used as extension for files which are available in a 32 bit
 # and a 64 bit version to simplify shared Makefiles.
 # e.g.: obj-y += foo_$(BITS).o
 export BITS

 ifeq ($(CONFIG_X86_32),y)
         BITS := 32
         UTS_MACHINE := i386
         CHECKFLAGS += -D__i386__

         biarch := $(call cc-option,-m32)
         KBUILD_AFLAGS += $(biarch)
         KBUILD_CFLAGS += $(biarch)

         ifdef CONFIG_RELOCATABLE
                 LDFLAGS_vmlinux := --emit-relocs
         endif

         KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return

         # prevent gcc from keeping the stack 16 byte aligned
         KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)

         # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
         # a lot more stack due to the lack of sharing of stacklots:
         KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
                 echo $(call cc-option,-fno-unit-at-a-time); fi ;)

         # CPU-specific tuning. Anything which can be shared with UML should go here.
         include $(srctree)/arch/x86/Makefile_32.cpu
         KBUILD_CFLAGS += $(cflags-y)

         # temporary until string.h is fixed
         KBUILD_CFLAGS += -ffreestanding
 else
         BITS := 64
         UTS_MACHINE := x86_64
         CHECKFLAGS += -D__x86_64__ -m64

         KBUILD_AFLAGS += -m64
         KBUILD_CFLAGS += -m64

         # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
         cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
         cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)

         cflags-$(CONFIG_MCORE2) += \
                 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
         cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
         KBUILD_CFLAGS += $(cflags-y)

         KBUILD_CFLAGS += -mno-red-zone
         KBUILD_CFLAGS += -mcmodel=kernel

         # -funit-at-a-time shrinks the kernel .text considerably
         # unfortunately it makes reading oopses harder.
         KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)

         # this works around some issues with generating unwind tables in older gccs
         # newer gccs do it by default
         KBUILD_CFLAGS += -maccumulate-outgoing-args

         stackp := $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh
         stackp-$(CONFIG_CC_STACKPROTECTOR) := $(shell $(stackp) \
                 "$(CC)" -fstack-protector )
         stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(stackp) \
                 "$(CC)" -fstack-protector-all )

         KBUILD_CFLAGS += $(stackp-y)
 endif

 # Stackpointer is addressed different for 32 bit and 64 bit x86
 sp-$(CONFIG_X86_32) := esp
 sp-$(CONFIG_X86_64) := rsp

 # do binutils support CFI?
 cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
 # is .cfi_signal_frame supported too?
 cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
 KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
 KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)

 LDFLAGS := -m elf_$(UTS_MACHINE)
 OBJCOPYFLAGS := -O binary -R .note -R .comment -S

 # Speed up the build
 KBUILD_CFLAGS += -pipe
 # Workaround for a gcc prelease that unfortunately was shipped in a suse release
 KBUILD_CFLAGS += -Wno-sign-compare
 #
 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
 # prevent gcc from generating any FP code by mistake
 KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)

 ###
 # Sub architecture support
 # fcore-y is linked before mcore-y files.

 # Default subarch .c files
 mcore-y  := arch/x86/mach-default/

 # Voyager subarch support
 mflags-$(CONFIG_X86_VOYAGER)	:= -Iinclude/asm-x86/mach-voyager
 mcore-$(CONFIG_X86_VOYAGER)	:= arch/x86/mach-voyager/

 # VISWS subarch support
 mflags-$(CONFIG_X86_VISWS)	:= -Iinclude/asm-x86/mach-visws
 mcore-$(CONFIG_X86_VISWS)	:= arch/x86/mach-visws/

 # NUMAQ subarch support
 mflags-$(CONFIG_X86_NUMAQ)	:= -Iinclude/asm-x86/mach-numaq
 mcore-$(CONFIG_X86_NUMAQ)	:= arch/x86/mach-default/

 # BIGSMP subarch support
 mflags-$(CONFIG_X86_BIGSMP)	:= -Iinclude/asm-x86/mach-bigsmp
 mcore-$(CONFIG_X86_BIGSMP)	:= arch/x86/mach-default/

 #Summit subarch support
 mflags-$(CONFIG_X86_SUMMIT)	:= -Iinclude/asm-x86/mach-summit
 mcore-$(CONFIG_X86_SUMMIT)	:= arch/x86/mach-default/

 # generic subarchitecture
 mflags-$(CONFIG_X86_GENERICARCH):= -Iinclude/asm-x86/mach-generic
 fcore-$(CONFIG_X86_GENERICARCH)	+= arch/x86/mach-generic/
 mcore-$(CONFIG_X86_GENERICARCH)	:= arch/x86/mach-default/


 # ES7000 subarch support
 mflags-$(CONFIG_X86_ES7000)	:= -Iinclude/asm-x86/mach-es7000
 fcore-$(CONFIG_X86_ES7000)	:= arch/x86/mach-es7000/
 mcore-$(CONFIG_X86_ES7000)	:= arch/x86/mach-default/

 # default subarch .h files
 mflags-y += -Iinclude/asm-x86/mach-default

 # 64 bit does not support subarch support - clear sub arch variables
 fcore-$(CONFIG_X86_64)  :=
 mcore-$(CONFIG_X86_64)  :=
 mflags-$(CONFIG_X86_64) :=

 KBUILD_CFLAGS += $(mflags-y)
 KBUILD_AFLAGS += $(mflags-y)

 ###
 # Kernel objects

 head-y                := arch/x86/kernel/head_$(BITS).o
 head-$(CONFIG_X86_64) += arch/x86/kernel/head64.o
 head-y                += arch/x86/kernel/init_task.o

 libs-y  += arch/x86/lib/

 # Sub architecture files that needs linking first
 core-y += $(fcore-y)

 # Xen paravirtualization support
 core-$(CONFIG_XEN) += arch/x86/xen/

 # lguest paravirtualization support
 core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/

 core-y += arch/x86/kernel/
 core-y += arch/x86/mm/

 # Remaining sub architecture files
 core-y += $(mcore-y)

 core-y += arch/x86/crypto/
 core-y += arch/x86/vdso/
 core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/

 # drivers-y are linked after core-y
 drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
 drivers-$(CONFIG_PCI)            += arch/x86/pci/

 # must be linked after kernel/
 drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/

 ifeq ($(CONFIG_X86_32),y)
 drivers-$(CONFIG_PM) += arch/x86/power/
 drivers-$(CONFIG_FB) += arch/x86/video/
 endif

 ####
 # boot loader support. Several targets are kept for legacy purposes

 boot := arch/x86/boot

 PHONY += zImage bzImage compressed zlilo bzlilo \
          zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install

 # Default kernel to build
 all: bzImage

 # KBUILD_IMAGE specify target image being built
                     KBUILD_IMAGE := $(boot)/bzImage
 zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage

 zImage bzImage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 	$(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
 	$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/bzImage

 compressed: zImage

 zlilo bzlilo: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo

 zdisk bzdisk: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk

 fdimage fdimage144 fdimage288 isoimage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@

 install: vdso_install
 	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install

 PHONY += vdso_install
 vdso_install:
 	$(Q)$(MAKE) $(build)=arch/x86/vdso $@

 archclean:
 	$(Q)rm -rf $(objtree)/arch/i386
 	$(Q)rm -rf $(objtree)/arch/x86_64
 	$(Q)$(MAKE) $(clean)=$(boot)

 define archhelp
   echo  '* bzImage      - Compressed kernel image (arch/x86/boot/bzImage)'
   echo  '  install      - Install kernel using'
   echo  '                  (your) ~/bin/installkernel or'
   echo  '                  (distribution) /sbin/installkernel or'
   echo  '                  install to $$(INSTALL_PATH) and run lilo'
   echo  '  fdimage      - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
   echo  '  fdimage144   - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
   echo  '  fdimage288   - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
   echo  '  isoimage     - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
   echo  '                  bzdisk/fdimage*/isoimage also accept:'
   echo  '                  FDARGS="..."  arguments for the booted kernel'
   echo  '                  FDINITRD=file initrd for the booted kernel'
 endef

 CLEAN_FILES += arch/x86/boot/fdimage \
 	       arch/x86/boot/image.iso \
 	       arch/x86/boot/mtools.conf
	# Unified Makefile for i386 and x86_64

	# select defconfig based on actual architecture
	ifeq ($(ARCH),x86)
	KBUILD_DEFCONFIG := i386_defconfig
	else
	KBUILD_DEFCONFIG := $(ARCH)_defconfig
	endif

	# BITS is used as extension for files which are available in a 32 bit
	# and a 64 bit version to simplify shared Makefiles.
	# e.g.: obj-y += foo_$(BITS).o
	export BITS

	ifeq ($(CONFIG_X86_32),y)
	BITS := 32
	UTS_MACHINE := i386
	CHECKFLAGS += -D__i386__

	biarch := $(call cc-option,-m32)
	KBUILD_AFLAGS += $(biarch)
	KBUILD_CFLAGS += $(biarch)

	ifdef CONFIG_RELOCATABLE
	LDFLAGS_vmlinux := --emit-relocs
	endif

	KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return

	# prevent gcc from keeping the stack 16 byte aligned
	KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)

	# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
	# a lot more stack due to the lack of sharing of stacklots:
	KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
	echo $(call cc-option,-fno-unit-at-a-time); fi ;)

	# CPU-specific tuning. Anything which can be shared with UML should go here.
	include $(srctree)/arch/x86/Makefile_32.cpu
	KBUILD_CFLAGS += $(cflags-y)

	# temporary until string.h is fixed
	KBUILD_CFLAGS += -ffreestanding
	else
	BITS := 64
	UTS_MACHINE := x86_64
	CHECKFLAGS += -D__x86_64__ -m64

	KBUILD_AFLAGS += -m64
	KBUILD_CFLAGS += -m64

	# FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
	cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
	cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)

	cflags-$(CONFIG_MCORE2) += \
	$(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
	cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
	KBUILD_CFLAGS += $(cflags-y)

	KBUILD_CFLAGS += -mno-red-zone
	KBUILD_CFLAGS += -mcmodel=kernel

	# -funit-at-a-time shrinks the kernel .text considerably
	# unfortunately it makes reading oopses harder.
	KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)

	# this works around some issues with generating unwind tables in older gccs
	# newer gccs do it by default
	KBUILD_CFLAGS += -maccumulate-outgoing-args

	stackp := $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh
	stackp-$(CONFIG_CC_STACKPROTECTOR) := $(shell $(stackp) \
	"$(CC)" -fstack-protector )
	stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(stackp) \
	"$(CC)" -fstack-protector-all )

	KBUILD_CFLAGS += $(stackp-y)
	endif

	# Stackpointer is addressed different for 32 bit and 64 bit x86
	sp-$(CONFIG_X86_32) := esp
	sp-$(CONFIG_X86_64) := rsp

	# do binutils support CFI?
	cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
	# is .cfi_signal_frame supported too?
	cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
	KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
	KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)

	LDFLAGS := -m elf_$(UTS_MACHINE)
	OBJCOPYFLAGS := -O binary -R .note -R .comment -S

	# Speed up the build
	KBUILD_CFLAGS += -pipe
	# Workaround for a gcc prelease that unfortunately was shipped in a suse release
	KBUILD_CFLAGS += -Wno-sign-compare
	#
	KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
	# prevent gcc from generating any FP code by mistake
	KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)

	###
	# Sub architecture support
	# fcore-y is linked before mcore-y files.

	# Default subarch .c files
	mcore-y := arch/x86/mach-default/

	# Voyager subarch support
	mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager
	mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/

	# VISWS subarch support
	mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
	mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws/

	# NUMAQ subarch support
	mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
	mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default/

	# BIGSMP subarch support
	mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
	mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default/

	#Summit subarch support
	mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
	mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default/

	# generic subarchitecture
	mflags-$(CONFIG_X86_GENERICARCH):= -Iinclude/asm-x86/mach-generic
	fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
	mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/


	# ES7000 subarch support
	mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
	fcore-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
	mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default/

	# default subarch .h files
	mflags-y += -Iinclude/asm-x86/mach-default

	# 64 bit does not support subarch support - clear sub arch variables
	fcore-$(CONFIG_X86_64) :=
	mcore-$(CONFIG_X86_64) :=
	mflags-$(CONFIG_X86_64) :=

	KBUILD_CFLAGS += $(mflags-y)
	KBUILD_AFLAGS += $(mflags-y)

	###
	# Kernel objects

	head-y := arch/x86/kernel/head_$(BITS).o
	head-$(CONFIG_X86_64) += arch/x86/kernel/head64.o
	head-y += arch/x86/kernel/init_task.o

	libs-y += arch/x86/lib/

	# Sub architecture files that needs linking first
	core-y += $(fcore-y)

	# Xen paravirtualization support
	core-$(CONFIG_XEN) += arch/x86/xen/

	# lguest paravirtualization support
	core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/

	core-y += arch/x86/kernel/
	core-y += arch/x86/mm/

	# Remaining sub architecture files
	core-y += $(mcore-y)

	core-y += arch/x86/crypto/
	core-y += arch/x86/vdso/
	core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/

	# drivers-y are linked after core-y
	drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
	drivers-$(CONFIG_PCI) += arch/x86/pci/

	# must be linked after kernel/
	drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/

	ifeq ($(CONFIG_X86_32),y)
	drivers-$(CONFIG_PM) += arch/x86/power/
	drivers-$(CONFIG_FB) += arch/x86/video/
	endif

	####
	# boot loader support. Several targets are kept for legacy purposes

	boot := arch/x86/boot

	PHONY += zImage bzImage compressed zlilo bzlilo \
	zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install

	# Default kernel to build
	all: bzImage

	# KBUILD_IMAGE specify target image being built
	KBUILD_IMAGE := $(boot)/bzImage
	zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage

	zImage bzImage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
	$(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
	$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/bzImage

	compressed: zImage

	zlilo bzlilo: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo

	zdisk bzdisk: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk

	fdimage fdimage144 fdimage288 isoimage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@

	install: vdso_install
	$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install

	PHONY += vdso_install
	vdso_install:
	$(Q)$(MAKE) $(build)=arch/x86/vdso $@

	archclean:
	$(Q)rm -rf $(objtree)/arch/i386
	$(Q)rm -rf $(objtree)/arch/x86_64
	$(Q)$(MAKE) $(clean)=$(boot)

	define archhelp
	echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
	echo ' install - Install kernel using'
	echo ' (your) ~/bin/installkernel or'
	echo ' (distribution) /sbin/installkernel or'
	echo ' install to $$(INSTALL_PATH) and run lilo'
	echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
	echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
	echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
	echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
	echo ' bzdisk/fdimage*/isoimage also accept:'
	echo ' FDARGS="..." arguments for the booted kernel'
	echo ' FDINITRD=file initrd for the booted kernel'
	endef

	CLEAN_FILES += arch/x86/boot/fdimage \
	arch/x86/boot/image.iso \
	arch/x86/boot/mtools.conf