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Linux/scripts/Makefile.asm-generic

  1 # include/asm-generic contains a lot of files that are used
  2 # verbatim by several architectures.
  3 #
  4 # This Makefile reads the file arch/$(SRCARCH)/include/asm/Kbuild
  5 # and for each file listed in this file with generic-y creates
  6 # a small wrapper file in $(obj) (arch/$(SRCARCH)/include/generated/asm)
  7 
  8 kbuild-file := $(srctree)/arch/$(SRCARCH)/include/$(src)/Kbuild
  9 -include $(kbuild-file)
 10 
 11 include scripts/Kbuild.include
 12 
 13 # Create output directory if not already present
 14 _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
 15 
 16 # Stale wrappers when the corresponding files are removed from generic-y
 17 # need removing.
 18 generated-y   := $(generic-y) $(genhdr-y) $(generated-y)
 19 all-files     := $(patsubst %, $(obj)/%, $(generated-y))
 20 old-headers   := $(wildcard $(obj)/*.h)
 21 unwanted      := $(filter-out $(all-files),$(old-headers))
 22 
 23 quiet_cmd_wrap = WRAP    $@
 24 cmd_wrap = echo "\#include <asm-generic/$*.h>" >$@
 25 
 26 quiet_cmd_remove = REMOVE  $(unwanted)
 27 cmd_remove = rm -f $(unwanted)
 28 
 29 all: $(patsubst %, $(obj)/%, $(generic-y)) FORCE
 30         $(if $(unwanted),$(call cmd,remove),)
 31         @:
 32 
 33 $(obj)/%.h:
 34         $(call cmd,wrap)
 35 
 36 PHONY += FORCE
 37 .PHONY: $(PHONY)
 38 FORCE: ;

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