LXR linux/scripts/Makefile.headersinst

   1# ==========================================================================
   2# Installing headers
   3#
   4# header-y files will be installed verbatim
   5# unifdef-y are the files where unifdef will be run before installing files
   6# objhdr-y are generated files that will be installed verbatim
   7#
   8# ==========================================================================
   9
  10UNIFDEF := scripts/unifdef -U__KERNEL__
  11
  12# Eliminate the contents of (and inclusions of) compiler.h
  13HDRSED  := sed  -e "s/ inline / __inline__ /g" \
  14                -e "s/[[:space:]]__user[[:space:]]\{1,\}/ /g" \
  15                -e "s/(__user[[:space:]]\{1,\}/ (/g" \
  16                -e "s/[[:space:]]__force[[:space:]]\{1,\}/ /g" \
  17                -e "s/(__force[[:space:]]\{1,\}/ (/g" \
  18                -e "s/[[:space:]]__iomem[[:space:]]\{1,\}/ /g" \
  19                -e "s/(__iomem[[:space:]]\{1,\}/ (/g" \
  20                -e "s/[[:space:]]__attribute_const__[[:space:]]\{1,\}/\ /g" \
  21                -e "s/[[:space:]]__attribute_const__$$//" \
  22                -e "/^\#include <linux\/compiler.h>/d"
  23
  24_dst := $(if $(dst),$(dst),$(obj))
  25
  26ifeq (,$(patsubst include/asm/%,,$(obj)/))
  27# For producing the generated stuff in include/asm for biarch builds, include
  28# both sets of Kbuild files; we'll generate anything which is mentioned in
  29# _either_ arch, and recurse into subdirectories which are mentioned in either
  30# arch. Since some directories may exist in one but not the other, we must
  31# use $(wildcard...). 
  32GENASM := 1
  33archasm    := $(subst include/asm,asm-$(ARCH),$(obj))
  34altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
  35KBUILDFILES := $(wildcard $(srctree)/include/$(archasm)/Kbuild $(srctree)/include/$(altarchasm)/Kbuild)
  36else
  37KBUILDFILES := $(srctree)/$(obj)/Kbuild
  38endif
  39
  40include $(KBUILDFILES)
  41
  42include scripts/Kbuild.include 
  43
  44# If this is include/asm-$(ARCH) and there's no $(ALTARCH), then
  45# override $(_dst) so that we install to include/asm directly.
  46# Unless $(BIASMDIR) is set, in which case we're probably doing
  47# a 'headers_install_all' build and we should keep the -$(ARCH)
  48# in the directory name.
  49ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)$(BIASMDIR))
  50     _dst := include/asm
  51endif
  52
  53header-y        := $(sort $(header-y))
  54unifdef-y       := $(sort $(unifdef-y))
  55subdir-y        := $(patsubst %/,%,$(filter %/, $(header-y)))
  56header-y        := $(filter-out %/, $(header-y))
  57header-y        := $(filter-out $(unifdef-y),$(header-y))
  58
  59# stamp files for header checks
  60check-y         := $(patsubst %,.check.%,$(header-y) $(unifdef-y) $(objhdr-y))
  61
  62# Work out what needs to be removed
  63oldheaders      := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h))
  64unwanted        := $(filter-out $(header-y) $(unifdef-y) $(objhdr-y),$(oldheaders))
  65
  66oldcheckstamps  := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h))
  67unwanted        += $(filter-out $(check-y),$(oldcheckstamps))
  68
  69# Prefix them all with full paths to $(INSTALL_HDR_PATH)
  70header-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
  71unifdef-y       := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(unifdef-y))
  72objhdr-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
  73check-y         := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y))
  74
  75
  76ifdef ALTARCH
  77ifeq ($(obj),include/asm-$(ARCH))
  78altarch-y       := altarch-dir
  79endif
  80endif
  81
  82# Make the definitions visible for recursive make invocations
  83export ALTARCH
  84export ARCHDEF
  85export ALTARCHDEF
  86
  87quiet_cmd_o_hdr_install   = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
  88      cmd_o_hdr_install   = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \
  89                            $(INSTALL_HDR_PATH)/$(_dst)
  90
  91quiet_cmd_headers_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
  92      cmd_headers_install = $(HDRSED) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@)  \
  93                            > $@
  94
  95quiet_cmd_unifdef         = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
  96      cmd_unifdef         = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
  97                                   | $(HDRSED) > $@ || :
  98
  99quiet_cmd_check           = CHECK   $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/.check.%,$(_dst)/%,$@)
 100      cmd_check           = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \
 101                              $(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@
 102
 103quiet_cmd_remove          = REMOVE  $(_dst)/$@
 104      cmd_remove          = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@
 105
 106quiet_cmd_mkdir           = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
 107      cmd_mkdir           = mkdir -p $@
 108
 109quiet_cmd_gen             = GEN     $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
 110      cmd_gen             = \
 111FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@);                   \
 112STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z.- A-Z__`;                     \
 113(echo "/* File autogenerated by 'make headers_install' */" ;            \
 114echo "\#ifndef $$STUBDEF" ;                                             \
 115echo "\#define $$STUBDEF" ;                                             \
 116echo "\# if $(ARCHDEF)" ;                                               \
 117if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then              \
 118        echo "\#  include <$(archasm)/$$FNAME>" ;                       \
 119else                                                                    \
 120        echo "\#  error $(archasm)/$$FNAME does not exist in"           \
 121                        "the $(ARCH) architecture" ;                    \
 122fi ;                                                                    \
 123echo "\# elif $(ALTARCHDEF)" ;                                          \
 124if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then           \
 125        echo "\#  include <$(altarchasm)/$$FNAME>" ;                    \
 126else                                                                    \
 127        echo "\#  error $(altarchasm)/$$FNAME does not exist in"        \
 128                        "the $(ALTARCH) architecture" ;                 \
 129fi ;                                                                    \
 130echo "\# else" ;                                                        \
 131echo "\#  warning This machine appears to be"                           \
 132                 "neither $(ARCH) nor $(ALTARCH)." ;                    \
 133echo "\# endif" ;                                                       \
 134echo "\#endif /* $$STUBDEF */" ;                                        \
 135) > $@
 136
 137.PHONY: __headersinst __headerscheck
 138
 139ifdef HDRCHECK
 140__headerscheck: $(subdir-y) $(check-y)
 141        @true
 142
 143$(check-y) : $(INSTALL_HDR_PATH)/$(_dst)/.check.%.h : $(INSTALL_HDR_PATH)/$(_dst)/%.h 
 144        $(call cmd,check)
 145
 146# Other dependencies for $(check-y)
 147include /dev/null $(wildcard $(check-y))
 148
 149# ... but leave $(check-y) as .PHONY for now until those deps are actually correct.
 150.PHONY: $(check-y)
 151
 152else
 153# Rules for installing headers
 154__headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
 155        @true
 156
 157$(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted)
 158
 159$(INSTALL_HDR_PATH)/$(_dst):
 160        $(call cmd,mkdir)
 161
 162.PHONY: $(unwanted)
 163$(unwanted):
 164        $(call cmd,remove)
 165
 166ifdef GENASM
 167$(objhdr-y) $(header-y) $(unifdef-y): $(KBUILDFILES)
 168        $(call cmd,gen)
 169
 170else
 171$(objhdr-y) :           $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(KBUILDFILES)
 172        $(call cmd,o_hdr_install)
 173
 174$(header-y) :           $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
 175        $(call cmd,headers_install)
 176
 177$(unifdef-y) :          $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
 178        $(call cmd,unifdef)
 179endif
 180endif
 181
 182hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
 183
 184.PHONY: altarch-dir
 185# All the files in the normal arch dir must be created first, since we test
 186# for their existence.
 187altarch-dir: $(subdir-y) $(header-y) $(unifdef-y) $(objhdr-y)
 188        $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
 189        $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm$(BIASMDIR)
 190
 191# Recursion
 192.PHONY: $(subdir-y)
 193$(subdir-y):
 194        $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)
 195