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 = \
  47         $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
  48         $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \
  49         touch $@
  50
  51 quiet_cmd_remove = REMOVE  $(unwanted)
  52       cmd_remove = rm -f $(unwanted-file)
  53
  54 quiet_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
  59 PHONY += __headersinst __headerscheck
  60
  61 ifndef HDRCHECK
  62 # Rules for installing headers
  63 __headersinst: $(subdirs) $(install-file)
  64         @:
  65
  66 targets += $(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
  72 else
  73 __headerscheck: $(subdirs) $(check-file)
  74         @:
  75
  76 targets += $(check-file)
  77 $(check-file): scripts/headers_check.pl $(output-files) FORCE
  78         $(call if_changed,check)
  79
  80 endif
  81
  82 # Recursion
  83 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
  84 .PHONY: $(subdirs)
  85 $(subdirs):
  86         $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
  87
  88 targets := $(wildcard $(sort $(targets)))
  89 cmd_files := $(wildcard \
  90              $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
  91
  92 ifneq ($(cmd_files),)
  93         include $(cmd_files)
  94 endif
  95
  96 .PHONY: $(PHONY)
  97 PHONY += FORCE
  98 FORCE: ;