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Every compiler flag added by arch/sh/Makefile is passed to the
compiler twice:
$(KBUILD_CPPFLAGS) + $(KBUILD_CFLAGS) is used for compiling *.c
$(KBUILD_CPPFLAGS) + $(KBUILD_AFLAGS) is used for compiling *.S
Given the above, adding $(cflags-y) to all of KBUILD_{CPP/C/A}FLAGS
ends up with duplication.
Add -I options to $(KBUILD_CPPFLAGS), and the rest of $(cflags-y)
to KBUILD_{C,A}FLAGS.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230219141555.2308306-4-masahiroy@kernel.org
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
194 lines
6.5 KiB
Makefile
194 lines
6.5 KiB
Makefile
#
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# arch/sh/Makefile
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#
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# Copyright (C) 1999 Kaz Kojima
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# Copyright (C) 2002 - 2008 Paul Mundt
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# Copyright (C) 2002 M. R. Brown
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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ifdef cross_compiling
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ifeq ($(CROSS_COMPILE),)
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CROSS_COMPILE := $(call cc-cross-prefix, sh-linux- sh-linux-gnu- sh-unknown-linux-gnu-)
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endif
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endif
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KBUILD_DEFCONFIG := shx3_defconfig
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isa-y := any
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isa-$(CONFIG_SH_DSP) := sh
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isa-$(CONFIG_CPU_SH2) := sh2
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isa-$(CONFIG_CPU_SH2A) := sh2a
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isa-$(CONFIG_CPU_SH3) := sh3
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isa-$(CONFIG_CPU_SH4) := sh4
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isa-$(CONFIG_CPU_SH4A) := sh4a
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isa-$(CONFIG_CPU_SH4AL_DSP) := sh4al
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isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
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isa-y := $(isa-y)-up
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cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
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cflags-$(CONFIG_CPU_J2) += $(call cc-option,-mj2,)
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cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
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$(call cc-option,-m2a-nofpu,) \
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$(call cc-option,-m4-nofpu,)
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cflags-$(CONFIG_CPU_SH3) := $(call cc-option,-m3,)
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cflags-$(CONFIG_CPU_SH4) := $(call cc-option,-m4,) \
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$(call cc-option,-mno-implicit-fp,-m4-nofpu)
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cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \
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$(call cc-option,-m4a-nofpu,)
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cflags-$(CONFIG_CPU_SH4AL_DSP) += $(call cc-option,-m4al,)
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ifeq ($(cflags-y),)
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#
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# In the case where we are stuck with a compiler that has been uselessly
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# restricted to a particular ISA, a favourite default of newer GCCs when
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# extensive multilib targets are not provided, ensure we get the best fit
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# regarding FP generation. This is intentionally stupid (albeit many
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# orders of magnitude less than GCC's default behaviour), as anything
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# with a large number of multilib targets better have been built
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# correctly for the target in mind.
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#
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cflags-y += $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \
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grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//')
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# At this point, anything goes.
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isaflags-y := $(call as-option,-Wa$(comma)-isa=any,)
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else
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#
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# -Wa,-isa= tuning implies -Wa,-dsp for the versions of binutils that
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# support it, while -Wa,-dsp by itself limits the range of usable opcodes
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# on certain CPU subtypes. Try the ISA variant first, and if that fails,
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# fall back on -Wa,-dsp for the old binutils versions. Even without DSP
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# opcodes, we always want the best ISA tuning the version of binutils
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# will provide.
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#
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isaflags-y := $(call as-option,-Wa$(comma)-isa=$(isa-y),)
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isaflags-$(CONFIG_SH_DSP) := \
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$(call as-option,-Wa$(comma)-isa=$(isa-y),-Wa$(comma)-dsp)
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endif
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml
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cflags-y += $(call cc-option,-mno-fdpic)
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cflags-y += $(isaflags-y) -ffreestanding
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OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment \
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-R .stab -R .stabstr -S
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# Give the various platforms the opportunity to set default image types
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defaultimage-y := zImage
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defaultimage-$(CONFIG_SH_SH7785LCR) := uImage
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defaultimage-$(CONFIG_SH_RSK) := uImage
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defaultimage-$(CONFIG_SH_URQUELL) := uImage
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defaultimage-$(CONFIG_SH_MIGOR) := uImage
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defaultimage-$(CONFIG_SH_AP325RXA) := uImage
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defaultimage-$(CONFIG_SH_SH7757LCR) := uImage
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defaultimage-$(CONFIG_SH_7724_SOLUTION_ENGINE) := uImage
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defaultimage-$(CONFIG_SH_7206_SOLUTION_ENGINE) := vmlinux
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defaultimage-$(CONFIG_SH_7619_SOLUTION_ENGINE) := vmlinux
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# Set some sensible Kbuild defaults
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boot := arch/sh/boot
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KBUILD_IMAGE := $(boot)/$(defaultimage-y)
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#
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# Choosing incompatible machines durings configuration will result in
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# error messages during linking.
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#
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UTS_MACHINE := sh
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LDFLAGS_vmlinux += -e _stext
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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ld-bfd := elf32-sh-linux
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LDFLAGS_vmlinux += --defsym jiffies=jiffies_64 --oformat $(ld-bfd)
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KBUILD_LDFLAGS += -EL
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else
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ld-bfd := elf32-shbig-linux
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LDFLAGS_vmlinux += --defsym jiffies=jiffies_64+4 --oformat $(ld-bfd)
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KBUILD_LDFLAGS += -EB
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endif
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export ld-bfd
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# Mach groups
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machdir-$(CONFIG_SOLUTION_ENGINE) += mach-se
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machdir-$(CONFIG_SH_DREAMCAST) += mach-dreamcast
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machdir-$(CONFIG_SH_SH03) += mach-sh03
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machdir-$(CONFIG_SH_MIGOR) += mach-migor
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machdir-$(CONFIG_SH_KFR2R09) += mach-kfr2r09
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machdir-$(CONFIG_SH_ECOVEC) += mach-ecovec24
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machdir-$(CONFIG_SH_SDK7786) += mach-sdk7786
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machdir-$(CONFIG_SH_X3PROTO) += mach-x3proto
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machdir-$(CONFIG_SH_LANDISK) += mach-landisk
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machdir-y += mach-common
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#
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# CPU header paths
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#
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# These are ordered by optimization level. A CPU family that is a subset
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# of another (ie, SH-2A / SH-2), is picked up first, with increasing
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# levels of genericness if nothing more suitable is situated in the
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# hierarchy.
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#
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# As an example, in order of preference, SH-2A > SH-2 > common definitions.
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#
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cpuincdir-$(CONFIG_CPU_SH2A) += cpu-sh2a
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cpuincdir-$(CONFIG_CPU_SH2) += cpu-sh2
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cpuincdir-$(CONFIG_CPU_SH3) += cpu-sh3
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cpuincdir-$(CONFIG_CPU_SH4A) += cpu-sh4a
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cpuincdir-$(CONFIG_CPU_SH4) += cpu-sh4
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cpuincdir-y += cpu-common # Must be last
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drivers-y += arch/sh/drivers/
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KBUILD_CPPFLAGS += $(addprefix -I $(srctree)/arch/sh/include/, $(cpuincdir-y) $(machdir-y))
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KBUILD_CFLAGS += -pipe $(cflags-y)
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KBUILD_AFLAGS += $(cflags-y)
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ifeq ($(CONFIG_MCOUNT),y)
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KBUILD_CFLAGS += -pg
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endif
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ifeq ($(CONFIG_DWARF_UNWINDER),y)
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KBUILD_CFLAGS += -fasynchronous-unwind-tables
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endif
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libs-y := arch/sh/lib/ $(libs-y)
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BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.xz uImage.lzo \
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uImage.srec uImage.bin zImage vmlinux.bin vmlinux.srec \
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romImage
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PHONY += $(BOOT_TARGETS)
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all: $(notdir $(KBUILD_IMAGE))
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$(BOOT_TARGETS): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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compressed: zImage
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archprepare:
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$(Q)$(MAKE) $(build)=arch/sh/tools include/generated/machtypes.h
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archheaders:
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$(Q)$(MAKE) $(build)=arch/sh/kernel/syscalls all
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define archhelp
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@echo ' zImage - Compressed kernel image'
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@echo ' romImage - Compressed ROM image, if supported'
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@echo ' vmlinux.srec - Create an ELF S-record'
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@echo ' vmlinux.bin - Create an uncompressed binary image'
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@echo '* uImage - Alias to bootable U-Boot image'
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@echo ' uImage.srec - Create an S-record for U-Boot'
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@echo ' uImage.bin - Kernel-only image for U-Boot (bin)'
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@echo '* uImage.gz - Kernel-only image for U-Boot (gzip)'
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@echo ' uImage.bz2 - Kernel-only image for U-Boot (bzip2)'
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@echo ' uImage.lzma - Kernel-only image for U-Boot (lzma)'
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@echo ' uImage.xz - Kernel-only image for U-Boot (xz)'
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@echo ' uImage.lzo - Kernel-only image for U-Boot (lzo)'
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endef
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