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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7cbbbb8bc2
The generic-y is redundant under the following condition: - arch has its own implementation - the same header is added to generated-y - the same header is added to mandatory-y If a redundant generic-y is found, the warning like follows is displayed: scripts/Makefile.asm-generic:20: redundant generic-y found in arch/arm/include/asm/Kbuild: timex.h I fixed up arch Kbuild files found by this. Suggested-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
54 lines
1.7 KiB
Makefile
54 lines
1.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# include/asm-generic contains a lot of files that are used
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# verbatim by several architectures.
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#
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# This Makefile reads the file arch/$(SRCARCH)/include/(uapi/)/asm/Kbuild
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# and for each file listed in this file with generic-y creates
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# a small wrapper file in arch/$(SRCARCH)/include/generated/(uapi/)/asm.
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PHONY := all
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all:
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src := $(subst /generated,,$(obj))
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-include $(src)/Kbuild
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include scripts/Kbuild.include
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redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))
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redundant += $(foreach f, $(generic-y), $(if $(wildcard $(srctree)/$(src)/$(f)),$(f)))
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redundant := $(sort $(redundant))
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$(if $(redundant),\
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$(warning redundant generic-y found in $(src)/Kbuild: $(redundant)))
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# If arch does not implement mandatory headers, fallback to asm-generic ones.
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mandatory-y := $(filter-out $(generated-y), $(mandatory-y))
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generic-y += $(foreach f, $(mandatory-y), $(if $(wildcard $(srctree)/$(src)/$(f)),,$(f)))
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generic-y := $(addprefix $(obj)/, $(generic-y))
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generated-y := $(addprefix $(obj)/, $(generated-y))
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# Remove stale wrappers when the corresponding files are removed from generic-y
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old-headers := $(wildcard $(obj)/*.h)
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unwanted := $(filter-out $(generic-y) $(generated-y),$(old-headers))
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quiet_cmd_wrap = WRAP $@
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cmd_wrap = echo "\#include <asm-generic/$*.h>" > $@
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quiet_cmd_remove = REMOVE $(unwanted)
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cmd_remove = rm -f $(unwanted)
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all: $(generic-y)
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$(if $(unwanted),$(call cmd,remove))
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@:
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$(obj)/%.h:
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$(call cmd,wrap)
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# Create output directory. Skip it if at least one old header exists
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# since we know the output directory already exists.
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ifeq ($(old-headers),)
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$(shell mkdir -p $(obj))
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endif
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.PHONY: $(PHONY)
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