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