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https://github.com/torvalds/linux
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083cad7804
Since commit2df8220cc5("kbuild: build init/built-in.a just once"), the .version file is not touched at all when KBUILD_BUILD_VERSION is given. If KBUILD_BUILD_VERSION is specified and the .version file is missing (for example right after 'make mrproper'), "No such file or director" is shown. Even if the .version exists, it is irrelevant to the version of the current build. $ make -j$(nproc) KBUILD_BUILD_VERSION=100 mrproper defconfig all [ snip ] BUILD arch/x86/boot/bzImage cat: .version: No such file or directory Kernel: arch/x86/boot/bzImage is ready (#) Show KBUILD_BUILD_VERSION if it is given. Fixes:2df8220cc5("kbuild: build init/built-in.a just once") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
94 lines
3.4 KiB
Makefile
94 lines
3.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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KBUILD_DEFCONFIG := mmu_defconfig
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UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
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# What CPU version are we building for, and crack it open
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# as major.minor.rev
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CPU_VER := $(CONFIG_XILINX_MICROBLAZE0_HW_VER)
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CPU_MAJOR := $(word 1, $(subst ., , $(CPU_VER)))
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CPU_MINOR := $(word 2, $(subst ., , $(CPU_VER)))
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CPU_REV := $(word 3, $(subst ., , $(CPU_VER)))
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export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
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# Use cpu-related CONFIG_ vars to set compile options.
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# The various CONFIG_XILINX cpu features options are integers 0/1/2...
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# rather than bools y/n
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# Work out HW multipler support. This is tricky.
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# 1. Spartan2 has no HW multipliers.
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# 2. MicroBlaze v3.x always uses them, except in Spartan 2
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# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
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ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
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ifeq ($(CPU_MAJOR),3)
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CPUFLAGS-1 += -mno-xl-soft-mul
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else
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# USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support.
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CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
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endif
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endif
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
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ifdef CONFIG_CPU_BIG_ENDIAN
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KBUILD_CFLAGS += -mbig-endian
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KBUILD_AFLAGS += -mbig-endian
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KBUILD_LDFLAGS += -EB
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else
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KBUILD_CFLAGS += -mlittle-endian
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KBUILD_AFLAGS += -mlittle-endian
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KBUILD_LDFLAGS += -EL
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endif
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CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
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# r31 holds current when in kernel mode
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KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
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libs-y += arch/microblaze/lib/
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boot := arch/microblaze/boot
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# Are we making a simpleImage.<boardname> target? If so, crack out the boardname
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DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
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export DTB
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all: linux.bin
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archheaders:
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$(Q)$(MAKE) $(build)=arch/microblaze/kernel/syscalls all
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PHONY += linux.bin linux.bin.gz linux.bin.ub
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linux.bin.ub linux.bin.gz: linux.bin
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linux.bin: vmlinux
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linux.bin linux.bin.gz linux.bin.ub:
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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@echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
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PHONY += simpleImage.$(DTB)
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simpleImage.$(DTB): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(addprefix $(boot)/$@., ub unstrip strip)
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@echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
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define archhelp
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echo '* linux.bin - Create raw binary'
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echo ' linux.bin.gz - Create compressed raw binary'
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echo ' linux.bin.ub - Create U-Boot wrapped raw binary'
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echo ' simpleImage.<dt> - Create the following images with <dt>.dtb linked in'
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echo ' simpleImage.<dt> : raw image'
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echo ' simpleImage.<dt>.ub : raw image with U-Boot header'
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echo ' simpleImage.<dt>.unstrip: ELF (identical to vmlinux)'
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echo ' simpleImage.<dt>.strip : stripped ELF'
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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/microblaze/boot/dts/ directory'
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echo ' (minus the .dts extension).'
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endef
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MRPROPER_FILES += $(boot)/simpleImage.*
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