# # x86_64/Makefile # # This file is included by the global makefile so that you can add your own # architecture-specific flags and dependencies. Remember to do have actions # for "archclean" and "archdep" for cleaning up and making dependencies for # this architecture # # This file is subject to the terms and conditions of the GNU General Public # License. See the file "COPYING" in the main directory of this archive # for more details. # # Copyright (C) 1994 by Linus Torvalds # # 19990713 Artur Skawina <skawina@geocities.com> # Added '-march' and '-mpreferred-stack-boundary' support # 20000913 Pavel Machek <pavel@suse.cz> # Converted for x86_64 architecture # 20010105 Andi Kleen, add IA32 compiler. # ....and later removed it again.... # # $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $ LDFLAGS := -m elf_x86_64 OBJCOPYFLAGS := -O binary -R .note -R .comment -S LDFLAGS_vmlinux := CHECKFLAGS += -D__x86_64__ -m64 cflags-y := cflags-kernel-y := cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8) cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona) # gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it # will eventually. Use -mtune=generic as fallback cflags-$(CONFIG_MCORE2) += \ $(call cc-option,-march=core2,$(call cc-option,-mtune=generic)) cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) cflags-y += -m64 cflags-y += -mno-red-zone cflags-y += -mcmodel=kernel cflags-y += -pipe cflags-y += -Wno-sign-compare cflags-y += -fno-asynchronous-unwind-tables ifneq ($(CONFIG_DEBUG_INFO),y) # -fweb shrinks the kernel a bit, but the difference is very small # it also messes up debugging, so don't use it for now. #cflags-y += $(call cc-option,-fweb) endif # -funit-at-a-time shrinks the kernel .text considerably # unfortunately it makes reading oopses harder. cflags-y += $(call cc-option,-funit-at-a-time) # prevent gcc from generating any FP code by mistake cflags-y += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) # this works around some issues with generating unwind tables in older gccs # newer gccs do it by default cflags-y += -maccumulate-outgoing-args # do binutils support CFI? cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,) AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,) # is .cfi_signal_frame supported too? cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,) AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,) cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector ) cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all ) CFLAGS += $(cflags-y) CFLAGS_KERNEL += $(cflags-kernel-y) AFLAGS += -m64 head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o libs-y += arch/x86_64/lib/ core-y += arch/x86_64/kernel/ \ arch/x86_64/mm/ \ arch/x86_64/crypto/ \ arch/x86_64/vdso/ core-$(CONFIG_IA32_EMULATION) += arch/x86_64/ia32/ drivers-$(CONFIG_PCI) += arch/x86_64/pci/ drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/ boot := arch/x86_64/boot PHONY += bzImage bzlilo install archmrproper \ fdimage fdimage144 fdimage288 isoimage archclean #Default target when executing "make" all: bzImage BOOTIMAGE := arch/x86_64/boot/bzImage KBUILD_IMAGE := $(BOOTIMAGE) bzImage: vmlinux $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE) bzlilo: vmlinux $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo bzdisk: vmlinux $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk fdimage fdimage144 fdimage288 isoimage: vmlinux $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@ install: $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@ archclean: $(Q)$(MAKE) $(clean)=$(boot) define archhelp echo '* bzImage - Compressed kernel image (arch/$(ARCH)/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/$(ARCH)/boot/fdimage \ arch/$(ARCH)/boot/image.iso \ arch/$(ARCH)/boot/mtools.conf