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   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
  10 UNIFDEF := scripts/unifdef -U__KERNEL__
  11
  12 # Eliminate the contents of (and inclusions of) compiler.h
  13 HDRSED  := sed  -e "s/ inline / __inline__ /g" \
  14                 -e "s/[[:space:]]__user[[:space:]]\+/ /g" \
  15                 -e "s/(__user[[:space:]]\+/ (/g" \
  16                 -e "s/[[:space:]]__force[[:space:]]\+/ /g" \
  17                 -e "s/(__force[[:space:]]\+/ (/g" \
  18                 -e "s/[[:space:]]__iomem[[:space:]]\+/ /g" \
  19                 -e "s/(__iomem[[:space:]]\+/ (/g" \
  20                 -e "s/[[:space:]]__attribute_const__[[:space:]]\+/\ /g" \
  21                 -e "s/[[:space:]]__attribute_const__$$//" \
  22                 -e "/^\#include <linux\/compiler.h>/d"
  23
  24 _dst := $(if $(dst),$(dst),$(obj))
  25
  26 ifeq (,$(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...).
  32 GENASM := 1
  33 archasm    := $(subst include/asm,asm-$(ARCH),$(obj))
  34 altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
  35 KBUILDFILES := $(wildcard $(srctree)/include/$(archasm)/Kbuild $(srctree)/include/$(altarchasm)/Kbuild)
  36 else
  37 KBUILDFILES := $(srctree)/$(obj)/Kbuild
  38 endif
  39
  40 include $(KBUILDFILES)
  41
  42 include 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.
  49 ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)$(BIASMDIR))
  50      _dst := include/asm
  51 endif
  52
  53 header-y        := $(sort $(header-y))
  54 unifdef-y       := $(sort $(unifdef-y))
  55 subdir-y        := $(patsubst %/,%,$(filter %/, $(header-y)))
  56 header-y        := $(filter-out %/, $(header-y))
  57 header-y        := $(filter-out $(unifdef-y),$(header-y))
  58
  59 # stamp files for header checks
  60 check-y         := $(patsubst %,.check.%,$(header-y) $(unifdef-y) $(objhdr-y))
  61
  62 # Work out what needs to be removed
  63 oldheaders      := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h))
  64 unwanted        := $(filter-out $(header-y) $(unifdef-y) $(objhdr-y),$(oldheaders))
  65
  66 oldcheckstamps  := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h))
  67 unwanted        += $(filter-out $(check-y),$(oldcheckstamps))
  68
  69 # Prefix them all with full paths to $(INSTALL_HDR_PATH)
  70 header-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
  71 unifdef-y       := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(unifdef-y))
  72 objhdr-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
  73 check-y         := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y))
  74
  75
  76 ifdef ALTARCH
  77 ifeq ($(obj),include/asm-$(ARCH))
  78 altarch-y       := altarch-dir
  79 endif
  80 endif
  81
  82 # Make the definitions visible for recursive make invocations
  83 export ALTARCH
  84 export ARCHDEF
  85 export ALTARCHDEF
  86
  87 quiet_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
  91 quiet_cmd_headers_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
  92       cmd_headers_install = $(HDRSED) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@)  \
  93                             > $@
  94
  95 quiet_cmd_unifdef         = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
  96       cmd_unifdef         = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
  97                                    | $(HDRSED) > $@ || :
  98
  99 quiet_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
 103 quiet_cmd_remove          = REMOVE  $(_dst)/$@
 104       cmd_remove          = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@
 105
 106 quiet_cmd_mkdir           = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
 107       cmd_mkdir           = mkdir -p $@
 108
 109 quiet_cmd_gen             = GEN     $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
 110       cmd_gen             = \
 111 FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@)                    \
 112 STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z.- A-Z__`;                     \
 113 (echo "/* File autogenerated by 'make headers_install' */" ;            \
 114 echo "\#ifndef $$STUBDEF" ;                                             \
 115 echo "\#define $$STUBDEF" ;                                             \
 116 echo "\# if $(ARCHDEF)" ;                                               \
 117 if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then              \
 118         echo "\#  include <$(archasm)/$$FNAME>" ;                       \
 119 else                                                                    \
 120         echo "\#  error $(archasm)/$$FNAME does not exist in"           \
 121                         "the $(ARCH) architecture" ;                    \
 122 fi ;                                                                    \
 123 echo "\# elif $(ALTARCHDEF)" ;                                          \
 124 if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then           \
 125         echo "\#  include <$(altarchasm)/$$FNAME>" ;                    \
 126 else                                                                    \
 127         echo "\#  error $(altarchasm)/$$FNAME does not exist in"        \
 128                         "the $(ALTARCH) architecture" ;                 \
 129 fi ;                                                                    \
 130 echo "\# else" ;                                                        \
 131 echo "\#  warning This machine appears to be"                           \
 132                  "neither $(ARCH) nor $(ALTARCH)." ;                    \
 133 echo "\# endif" ;                                                       \
 134 echo "\#endif /* $$STUBDEF */" ;                                        \
 135 ) > $@
 136
 137 .PHONY: __headersinst __headerscheck
 138
 139 ifdef 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)
 147 -include /dev/null $(check-y)
 148
 149 # ... but leave $(check-y) as .PHONY for now until those deps are actually correct.
 150 .PHONY: $(check-y)
 151
 152 else
 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
 166 ifdef GENASM
 167 $(objhdr-y) $(header-y) $(unifdef-y): $(KBUILDFILES)
 168         $(call cmd,gen)
 169
 170 else
 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)
 179 endif
 180 endif
 181
 182 hdrinst := -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.
 187 altarch-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)