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  9   ˆl–Ü4ý( ©³( 	Å€fàB¦-ÿÃƒÍµa–Ü4ý()¨‰P@ŠWrã/)‹FÿÂ >    # SPDX-License-Identifier: GPL-2.0
# include/asm-generic contains a lot of files that are used
# verbatim by several architectures.
#
# This Makefile reads the file arch/$(SRCARCH)/include/(uapi/)/asm/Kbuild
# and for each file listed in this file with generic-y creates
# a small wrapper file in arch/$(SRCARCH)/include/generated/(uapi/)/asm.

PHONY := all
all:

src := $(srctree)/$(subst /generated,,$(obj))

include $(srctree)/scripts/Kbuild.include
-include $(kbuild-file)

# $(generic)/Kbuild lists mandatory-y. Exclude um since it is a special case.
ifneq ($(SRCARCH),um)
include $(srctree)/$(generic)/Kbuild
endif

redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))
redundant += $(foreach f, $(generic-y), $(if $(wildcard $(src)/$(f)),$(f)))
redundant := $(sort $(redundant))
$(if $(redundant),\
	$(warning redundant generic-y found in $(src)/Kbuild: $(redundant)))

# If arch does not implement mandatory headers, fallback to asm-generic ones.
mandatory-y := $(filter-out $(generated-y), $(mandatory-y))
generic-y   += $(foreach f, $(mandatory-y), $(if $(wildcard $(src)/$(f)),,$(f)))

generic-y   := $(addprefix $(obj)/, $(generic-y))
generated-y := $(addprefix $(obj)/, $(generated-y))

# Remove stale wrappers when the corresponding files are removed from generic-y
old-headers := $(wildcard $(obj)/*.h)
unwanted    := $(filter-out $(generic-y) $(generated-y),$(old-headers))

quiet_cmd_wrap = WRAP    $@
      cmd_wrap = echo "\#include <asm-generic/$*.h>" > $@

quiet_cmd_remove = REMOVE  $(unwanted)
      cmd_remove = rm -f $(unwanted)

all: $(generic-y)
	$(if $(unwanted),$(call cmd,remove))
	@:

$(obj)/%.h:
	$(call cmd,wrap)

# Create output directory. Skip it if at least one old header exists
# since we know the output directory already exists.
ifeq ($(old-headers),)
$(shell mkdir -p $(obj))
endif

.PHONY: $(PHONY)
     ˆ¿Äƒ€w¾Â G    # SPDX-License-Identifier: GPL-2.0-only
#
# Build userspace programs for the target system
#

# Executables compiled from a single .c file
user-csingle	:= $(foreach m, $(userprogs), $(if $($(m)-objs),,$(m)))

# Executables linked based on several .o files
user-cmulti	:= $(foreach m, $(userprogs), $(if $($(m)-objs),$(m)))

# Objects compiled from .c files
user-cobjs	:= $(sort $(foreach m, $(userprogs), $($(m)-objs)))

user-csingle	:= $(addprefix $(obj)/, $(user-csingle))
user-cmulti	:= $(addprefix $(obj)/, $(user-cmulti))
user-cobjs	:= $(addprefix $(obj)/, $(user-cobjs))

user_ccflags	= -Wp,-MMD,$(depfile) $(KBUILD_USERCFLAGS) $(userccflags) \
			$($(target-stem)-userccflags)
user_ldflags	= $(KBUILD_USERLDFLAGS) $(userldflags) $($(target-stem)-userldflags)

# Create an executable from a single .c file
quiet_cmd_user_cc_c = CC [U]  $@
      cmd_user_cc_c = $(CC) $(user_ccflags) $(user_ldflags) -o $@ $< \
		      $($(target-stem)-userldlibs)
$(user-csingle): $(obj)/%: $(src)/%.c FORCE
	$(call if_changed_dep,user_cc_c)

# Link an executable based on list of .o files
quiet_cmd_user_ld = LD [U]  $@
      cmd_user_ld = $(CC) $(user_ldflags) -o $@ \
		    $(addprefix $(obj)/, $($(target-stem)-objs)) \
		    $($(target-stem)-userldlibs)
$(user-cmulti): FORCE
	$(call if_changed,user_ld)
$(call multi_depend, $(user-cmulti), , -objs)

# Create .o file from a .c file
quiet_cmd_user_cc_o_c = CC [U]  $@
      cmd_user_cc_o_c = $(CC) $(user_ccflags) -c -o $@ $<
$(user-cobjs): $(obj)/%.o: $(src)/%.c FORCE
	$(call if_changed_dep,user_cc_o_c)

targets += $(user-csingle) $(user-cmulti) $(user-cobjs)
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