9484b1eb4d
Michael Opdenacker reported: For backward compatibility with earlier (< 2.6.24) kernels, arch/i386/boot/bzImage or arch/x86_64/boot/bzImage symbolic links to arch/x86/boot/bzImage are created when you build an x86 kernel. The arch/i386 or arch/x86_64 directories are then created for this only purpose. Issue: these generated directories and symbolic links are *not cleaned up* when you run "make mrproper" (and thus "make distclean"). This disturbs the production of patches, because the source tree is left with generated files and directories. Sam has an alternative fix: The directory is killed during make clean as opposed to make mrproper. Reported-by: Michael Opdenacker <michael-lists@free-electrons.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
177 lines
5.8 KiB
Text
177 lines
5.8 KiB
Text
#
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# i386 Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies. Remember to do have actions
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# for "archclean" cleaning up for this architecture.
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1994 by Linus Torvalds
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#
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# 19990713 Artur Skawina <skawina@geocities.com>
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# Added '-march' and '-mpreferred-stack-boundary' support
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#
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# 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net>
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# Added support for GEODE CPU
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# BITS is used as extension for files which are available in a 32 bit
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# and a 64 bit version to simplify shared Makefiles.
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# e.g.: obj-y += foo_$(BITS).o
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BITS := 32
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export BITS
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HAS_BIARCH := $(call cc-option-yn, -m32)
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ifeq ($(HAS_BIARCH),y)
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AS := $(AS) --32
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LD := $(LD) -m elf_i386
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CC := $(CC) -m32
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endif
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LDFLAGS := -m elf_i386
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OBJCOPYFLAGS := -O binary -R .note -R .comment -S
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ifdef CONFIG_RELOCATABLE
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LDFLAGS_vmlinux := --emit-relocs
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endif
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CHECKFLAGS += -D__i386__
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KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
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# prevent gcc from keeping the stack 16 byte aligned
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KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
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# CPU-specific tuning. Anything which can be shared with UML should go here.
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include $(srctree)/arch/x86/Makefile_32.cpu
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# temporary until string.h is fixed
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cflags-y += -ffreestanding
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# this works around some issues with generating unwind tables in older gccs
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# newer gccs do it by default
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cflags-y += -maccumulate-outgoing-args
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# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
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# a lot more stack due to the lack of sharing of stacklots:
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KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
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# do binutils support CFI?
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cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
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KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
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# is .cfi_signal_frame supported too?
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cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
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KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
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KBUILD_CFLAGS += $(cflags-y)
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# Default subarch .c files
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mcore-y := arch/x86/mach-default
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# Voyager subarch support
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mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager
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mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager
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# VISWS subarch support
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mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
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mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws
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# NUMAQ subarch support
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mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
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mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default
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# BIGSMP subarch support
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mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
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mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default
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#Summit subarch support
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mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
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mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default
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# generic subarchitecture
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mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-x86/mach-generic
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mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default
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core-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
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# ES7000 subarch support
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mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
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mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default
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core-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
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# Xen paravirtualization support
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core-$(CONFIG_XEN) += arch/x86/xen/
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# lguest paravirtualization support
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core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/
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# default subarch .h files
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mflags-y += -Iinclude/asm-x86/mach-default
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head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task.o
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libs-y += arch/x86/lib/
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core-y += arch/x86/kernel/ \
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arch/x86/mm/ \
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$(mcore-y)/ \
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arch/x86/crypto/
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drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
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drivers-$(CONFIG_PCI) += arch/x86/pci/
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# must be linked after kernel/
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drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
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drivers-$(CONFIG_PM) += arch/x86/power/
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drivers-$(CONFIG_FB) += arch/x86/video/
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KBUILD_CFLAGS += $(mflags-y)
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KBUILD_AFLAGS += $(mflags-y)
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boot := arch/x86/boot
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PHONY += zImage bzImage compressed zlilo bzlilo \
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zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
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all: bzImage
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# KBUILD_IMAGE specify target image being built
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KBUILD_IMAGE := $(boot)/bzImage
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zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
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zImage bzImage: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
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$(Q)mkdir -p $(objtree)/arch/i386/boot
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$(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/i386/boot/bzImage
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compressed: zImage
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zlilo bzlilo: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
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zdisk bzdisk: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
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fdimage fdimage144 fdimage288 isoimage: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
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install:
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$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
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archclean:
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$(Q)rm -rf $(objtree)/arch/i386
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$(Q)rm -rf $(objtree)/arch/x86_64
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$(Q)$(MAKE) $(clean)=arch/x86/boot
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define archhelp
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echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
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echo ' install - Install kernel using'
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echo ' (your) ~/bin/installkernel or'
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echo ' (distribution) /sbin/installkernel or'
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echo ' install to $$(INSTALL_PATH) and run lilo'
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echo ' bzdisk - Create a boot floppy in /dev/fd0'
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echo ' fdimage - Create a boot floppy image'
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echo ' isoimage - Create a boot CD-ROM image'
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endef
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CLEAN_FILES += arch/x86/boot/fdimage \
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arch/x86/boot/image.iso \
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arch/x86/boot/mtools.conf
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