4ba7e5cd49
There were no reason to mess around with CC, AS and LD. Fixing this up avoided duplicated option for ld. A small fixlet were needed in boot/Makefile which assumed that CC were modified. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
249 lines
7.8 KiB
Makefile
249 lines
7.8 KiB
Makefile
# 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 ' bzdisk - Create a boot floppy in /dev/fd0'
|
|
echo ' fdimage - Create a boot floppy image'
|
|
echo ' isoimage - Create a boot CD-ROM image'
|
|
endef
|
|
|
|
CLEAN_FILES += arch/x86/boot/fdimage \
|
|
arch/x86/boot/image.iso \
|
|
arch/x86/boot/mtools.conf
|