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/$(SRCARCH)/include/$(src)/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/$(src))
   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) $(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: ;