440 строки
14 KiB
Makefile
440 строки
14 KiB
Makefile
# 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" and "archdep" for cleaning up and making dependencies for
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# 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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# Changes for PPC by Gary Thomas
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# Rewritten by Cort Dougan and Paul Mackerras
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#
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HAS_BIARCH := $(call cc-option-yn, -m32)
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# Set default 32 bits cross compilers for vdso and boot wrapper
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CROSS32_COMPILE ?=
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ifeq ($(HAS_BIARCH),y)
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ifeq ($(CROSS32_COMPILE),)
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ifdef CONFIG_PPC32
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# These options will be overridden by any -mcpu option that the CPU
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# or platform code sets later on the command line, but they are needed
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# to set a sane 32-bit cpu target for the 64-bit cross compiler which
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# may default to the wrong ISA.
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KBUILD_CFLAGS += -mcpu=powerpc
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KBUILD_AFLAGS += -mcpu=powerpc
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endif
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endif
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endif
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ifdef CONFIG_PPC_BOOK3S_32
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KBUILD_CFLAGS += -mcpu=powerpc
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endif
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ifeq ($(CROSS_COMPILE),)
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KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
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else
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KBUILD_DEFCONFIG := ppc64_defconfig
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endif
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ifdef CONFIG_PPC64
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new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
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ifeq ($(new_nm),y)
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NM := $(NM) --synthetic
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endif
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endif
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# BITS is used as extension for files which are available in a 32 bit
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# and a 64 bit version to simplify shared Makefiles.
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# e.g.: obj-y += foo_$(BITS).o
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export BITS
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ifdef CONFIG_PPC64
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BITS := 64
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else
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BITS := 32
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endif
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machine-y = ppc
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machine-$(CONFIG_PPC64) += 64
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machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le
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UTS_MACHINE := $(subst $(space),,$(machine-y))
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# XXX This needs to be before we override LD below
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ifdef CONFIG_PPC32
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KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
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else
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KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/powerpc/kernel/module.lds
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ifeq ($(call ld-ifversion, -ge, 225000000, y),y)
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# Have the linker provide sfpr if possible.
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# There is a corresponding test in arch/powerpc/lib/Makefile
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KBUILD_LDFLAGS_MODULE += --save-restore-funcs
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else
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KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
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endif
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endif
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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KBUILD_CFLAGS += -mlittle-endian
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KBUILD_LDFLAGS += -EL
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LDEMULATION := lppc
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GNUTARGET := powerpcle
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MULTIPLEWORD := -mno-multiple
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KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
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else
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KBUILD_CFLAGS += $(call cc-option,-mbig-endian)
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KBUILD_LDFLAGS += -EB
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LDEMULATION := ppc
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GNUTARGET := powerpc
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MULTIPLEWORD := -mmultiple
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endif
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ifdef CONFIG_PPC64
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mcall-aixdesc)
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aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
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aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2
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endif
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ifndef CONFIG_CC_IS_CLANG
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align
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endif
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
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aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
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aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
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ifeq ($(HAS_BIARCH),y)
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KBUILD_CFLAGS += -m$(BITS)
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KBUILD_AFLAGS += -m$(BITS) -Wl,-a$(BITS)
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KBUILD_LDFLAGS += -m elf$(BITS)$(LDEMULATION)
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KBUILD_ARFLAGS += --target=elf$(BITS)-$(GNUTARGET)
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endif
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cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard=tls
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ifdef CONFIG_PPC64
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cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r13
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else
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cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r2
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endif
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LDFLAGS_vmlinux-y := -Bstatic
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LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
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LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
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LDFLAGS_vmlinux += $(call ld-option,--orphan-handling=warn)
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ifdef CONFIG_PPC64
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ifeq ($(call cc-option-yn,-mcmodel=medium),y)
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# -mcmodel=medium breaks modules because it uses 32bit offsets from
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# the TOC pointer to create pointers where possible. Pointers into the
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# percpu data area are created by this method.
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#
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# The kernel module loader relocates the percpu data section from the
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# original location (starting with 0xd...) to somewhere in the base
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# kernel percpu data space (starting with 0xc...). We need a full
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# 64bit relocation for this to work, hence -mcmodel=large.
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KBUILD_CFLAGS_MODULE += -mcmodel=large
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else
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export NO_MINIMAL_TOC := -mno-minimal-toc
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endif
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endif
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CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no)
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
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AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2)
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else
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc)
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AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
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endif
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
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# Clang unconditionally reserves r2 on ppc32 and does not support the flag
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# https://bugs.llvm.org/show_bug.cgi?id=39555
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CFLAGS-$(CONFIG_PPC32) := $(call cc-option, -ffixed-r2)
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# Clang doesn't support -mmultiple / -mno-multiple
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# https://bugs.llvm.org/show_bug.cgi?id=39556
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CFLAGS-$(CONFIG_PPC32) += $(call cc-option, $(MULTIPLEWORD))
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CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-mno-readonly-in-sdata)
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ifdef CONFIG_PPC_BOOK3S_64
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power8
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CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power9,-mtune=power8)
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else
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CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,$(call cc-option,-mtune=power5))
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CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mcpu=power5,-mcpu=power4)
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endif
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else
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CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
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endif
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ifdef CONFIG_FUNCTION_TRACER
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CC_FLAGS_FTRACE := -pg
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ifdef CONFIG_MPROFILE_KERNEL
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CC_FLAGS_FTRACE += -mprofile-kernel
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endif
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# Work around gcc code-gen bugs with -pg / -fno-omit-frame-pointer in gcc <= 4.8
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44199
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52828
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ifndef CONFIG_CC_IS_CLANG
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CC_FLAGS_FTRACE += $(call cc-ifversion, -lt, 0409, -mno-sched-epilog)
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endif
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endif
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CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_TARGET_CPU))
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# Altivec option not allowed with e500mc64 in GCC.
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ifdef CONFIG_ALTIVEC
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E5500_CPU := -mcpu=powerpc64
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else
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E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
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endif
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CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU)
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CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))
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ifdef CONFIG_PPC32
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ifdef CONFIG_PPC_E500MC
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CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc)
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else
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CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc)
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endif
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endif
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asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
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KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr)
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KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y)
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KBUILD_CFLAGS += $(call cc-option,-msoft-float)
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KBUILD_CFLAGS += -pipe -Iarch/$(ARCH) $(CFLAGS-y)
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CPP = $(CC) -E $(KBUILD_CFLAGS)
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CHECKFLAGS += -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
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ifdef CONFIG_CPU_BIG_ENDIAN
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CHECKFLAGS += -D__BIG_ENDIAN__
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else
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CHECKFLAGS += -D__LITTLE_ENDIAN__
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endif
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ifdef CONFIG_476FPE_ERR46
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KBUILD_LDFLAGS_MODULE += --ppc476-workaround \
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-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
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endif
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# No AltiVec or VSX instructions when building kernel
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KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
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KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
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# No SPE instruction when building kernel
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# (We use all available options to help semi-broken compilers)
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KBUILD_CFLAGS += $(call cc-option,-mno-spe)
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KBUILD_CFLAGS += $(call cc-option,-mspe=no)
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# FIXME: the module load should be taught about the additional relocs
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# generated by this.
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# revert to pre-gcc-4.4 behaviour of .eh_frame
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KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
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# Never use string load/store instructions as they are
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# often slow when they are implemented at all
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KBUILD_CFLAGS += $(call cc-option,-mno-string)
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cpu-as-$(CONFIG_4xx) += -Wa,-m405
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cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec)
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cpu-as-$(CONFIG_E200) += -Wa,-me200
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cpu-as-$(CONFIG_E500) += -Wa,-me500
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# When using '-many -mpower4' gas will first try and find a matching power4
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# mnemonic and failing that it will allow any valid mnemonic that GAS knows
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# about. GCC will pass -many to GAS when assembling, clang does not.
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cpu-as-$(CONFIG_PPC_BOOK3S_64) += -Wa,-mpower4 -Wa,-many
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cpu-as-$(CONFIG_PPC_E500MC) += $(call as-option,-Wa$(comma)-me500mc)
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KBUILD_AFLAGS += $(cpu-as-y)
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KBUILD_CFLAGS += $(cpu-as-y)
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KBUILD_AFLAGS += $(aflags-y)
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KBUILD_CFLAGS += $(cflags-y)
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head-y := arch/powerpc/kernel/head_$(BITS).o
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head-$(CONFIG_PPC_8xx) := arch/powerpc/kernel/head_8xx.o
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head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
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head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
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head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
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head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
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head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
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head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o
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head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o
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# See arch/powerpc/Kbuild for content of core part of the kernel
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core-y += arch/powerpc/
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drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
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# Default to zImage, override when needed
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all: zImage
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# With make 3.82 we cannot mix normal and wildcard targets
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BOOT_TARGETS1 := zImage zImage.initrd uImage
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BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
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PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
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boot := arch/$(ARCH)/boot
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$(BOOT_TARGETS1): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
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$(BOOT_TARGETS2): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
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bootwrapper_install:
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$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
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# Used to create 'merged defconfigs'
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# To use it $(call) it with the first argument as the base defconfig
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# and the second argument as a space separated list of .config files to merge,
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# without the .config suffix.
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define merge_into_defconfig
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
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-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \
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$(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config)
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+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
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endef
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PHONY += pseries_le_defconfig
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pseries_le_defconfig:
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$(call merge_into_defconfig,pseries_defconfig,le)
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PHONY += ppc64le_defconfig
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ppc64le_defconfig:
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$(call merge_into_defconfig,ppc64_defconfig,le)
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PHONY += ppc64le_guest_defconfig
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ppc64le_guest_defconfig:
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$(call merge_into_defconfig,ppc64_defconfig,le guest)
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PHONY += ppc64_guest_defconfig
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ppc64_guest_defconfig:
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$(call merge_into_defconfig,ppc64_defconfig,be guest)
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PHONY += powernv_be_defconfig
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powernv_be_defconfig:
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$(call merge_into_defconfig,powernv_defconfig,be)
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PHONY += mpc85xx_defconfig
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mpc85xx_defconfig:
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$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
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85xx-32bit 85xx-hw fsl-emb-nonhw)
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PHONY += mpc85xx_smp_defconfig
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mpc85xx_smp_defconfig:
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$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
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85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
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PHONY += corenet32_smp_defconfig
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corenet32_smp_defconfig:
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$(call merge_into_defconfig,corenet_basic_defconfig,\
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85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw dpaa)
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PHONY += corenet64_smp_defconfig
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corenet64_smp_defconfig:
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$(call merge_into_defconfig,corenet_basic_defconfig,\
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85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw dpaa)
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PHONY += mpc86xx_defconfig
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mpc86xx_defconfig:
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$(call merge_into_defconfig,mpc86xx_basic_defconfig,\
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86xx-hw fsl-emb-nonhw)
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PHONY += mpc86xx_smp_defconfig
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mpc86xx_smp_defconfig:
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$(call merge_into_defconfig,mpc86xx_basic_defconfig,\
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86xx-smp 86xx-hw fsl-emb-nonhw)
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PHONY += ppc32_allmodconfig
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ppc32_allmodconfig:
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$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \
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-f $(srctree)/Makefile allmodconfig
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PHONY += ppc64le_allmodconfig
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ppc64le_allmodconfig:
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$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/le.config \
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-f $(srctree)/Makefile allmodconfig
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PHONY += ppc64_book3e_allmodconfig
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ppc64_book3e_allmodconfig:
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$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/85xx-64bit.config \
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-f $(srctree)/Makefile allmodconfig
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define archhelp
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@echo '* zImage - Build default images selected by kernel config'
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@echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
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@echo ' uImage - U-Boot native image format'
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@echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
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@echo ' versions which do not support device trees'
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@echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
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@echo ' simpleImage.<dt> - Firmware independent image.'
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@echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
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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 ' *_defconfig - Select default config from arch/$(ARCH)/configs'
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@echo ''
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@echo ' Targets with <dt> embed a device tree blob inside the image'
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@echo ' These targets support board with firmware that does not'
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@echo ' support passing a device tree directly. Replace <dt> with the'
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@echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
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@echo ' (minus the .dts extension).'
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endef
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install:
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$(Q)$(MAKE) $(build)=$(boot) install
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vdso_install:
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ifdef CONFIG_PPC64
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$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
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endif
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$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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archprepare: checkbin
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archheaders:
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$(Q)$(MAKE) $(build)=arch/powerpc/kernel/syscalls all
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ifdef CONFIG_STACKPROTECTOR
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prepare: stack_protector_prepare
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stack_protector_prepare: prepare0
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ifdef CONFIG_PPC64
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$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h))
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else
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$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h))
|
|
endif
|
|
endif
|
|
|
|
# Check toolchain versions:
|
|
# - gcc-4.6 is the minimum kernel-wide version so nothing required.
|
|
checkbin:
|
|
@if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \
|
|
&& $(LD) --version | head -1 | grep ' 2\.24$$' >/dev/null ; then \
|
|
echo -n '*** binutils 2.24 miscompiles weak symbols ' ; \
|
|
echo 'in some circumstances.' ; \
|
|
echo -n '*** Please use a different binutils version.' ; \
|
|
false ; \
|
|
fi
|