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