LXR linux/scripts/Makefile.headersinst

   1# ==========================================================================
   2# Installing headers
   3#
   4# header-y  - list files to be installed. They are preprocessed
   5#             to remove __KERNEL__ section of the file
   6# unifdef-y - Same as header-y. Obsolete
   7# objhdr-y  - Same as header-y but for generated files
   8#
   9# ==========================================================================
  10
  11# called may set destination dir (when installing to asm/)
  12_dst := $(if $(dst),$(dst),$(obj))
  13
  14kbuild-file := $(srctree)/$(obj)/Kbuild
  15include $(kbuild-file)
  16
  17include scripts/Kbuild.include
  18
  19install       := $(INSTALL_HDR_PATH)/$(_dst)
  20
  21header-y      := $(sort $(header-y) $(unifdef-y))
  22subdirs       := $(patsubst %/,%,$(filter %/, $(header-y)))
  23header-y      := $(filter-out %/, $(header-y))
  24
  25# files used to track state of install/check
  26install-file  := $(install)/.install
  27check-file    := $(install)/.check
  28
  29# all headers files for this dir
  30all-files     := $(header-y) $(objhdr-y)
  31input-files   := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
  32                 $(addprefix $(objtree)/$(obj)/,$(objhdr-y))
  33output-files  := $(addprefix $(install)/, $(all-files))
  34
  35# Work out what needs to be removed
  36oldheaders    := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
  37unwanted      := $(filter-out $(all-files),$(oldheaders))
  38
  39# Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
  40unwanted-file := $(addprefix $(install)/, $(unwanted))
  41
  42printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
  43
  44quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
  45                            file$(if $(word 2, $(all-files)),s))
  46      cmd_install = \
  47        $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
  48        $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \
  49        touch $@
  50
  51quiet_cmd_remove = REMOVE  $(unwanted)
  52      cmd_remove = rm -f $(unwanted-file)
  53
  54quiet_cmd_check = CHECK   $(printdir) ($(words $(all-files)) files)
  55      cmd_check = $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH) \
  56                  $(addprefix $(install)/, $(all-files));           \
  57                  touch $@
  58
  59PHONY += __headersinst __headerscheck
  60
  61ifndef HDRCHECK
  62# Rules for installing headers
  63__headersinst: $(subdirs) $(install-file)
  64        @:
  65
  66targets += $(install-file)
  67$(install-file): scripts/headers_install.pl $(input-files) FORCE
  68        $(if $(unwanted),$(call cmd,remove),)
  69        $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
  70        $(call if_changed,install)
  71
  72else
  73__headerscheck: $(subdirs) $(check-file)
  74        @:
  75
  76targets += $(check-file)
  77$(check-file): scripts/headers_check.pl $(output-files) FORCE
  78        $(call if_changed,check)
  79
  80endif
  81
  82# Recursion
  83hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
  84.PHONY: $(subdirs)
  85$(subdirs):
  86        $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
  87
  88targets := $(wildcard $(sort $(targets)))
  89cmd_files := $(wildcard \
  90             $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
  91
  92ifneq ($(cmd_files),)
  93        include $(cmd_files)
  94endif
  95
  96.PHONY: $(PHONY)
  97PHONY += FORCE
  98FORCE: ;
  99