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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:]]\{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
  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) $(unifdef-y))
  54 subdir-y        := $(patsubst %/,%,$(filter %/, $(header-y)))
  55 header-y        := $(filter-out %/, $(header-y))
  56
  57 # stamp files for header checks
  58 check-y         := $(patsubst %,.check.%,$(header-y) $(objhdr-y))
  59
  60 # Work out what needs to be removed
  61 oldheaders      := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h))
  62 unwanted        := $(filter-out $(header-y) $(objhdr-y),$(oldheaders))
  63
  64 oldcheckstamps  := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h))
  65 unwanted        += $(filter-out $(check-y),$(oldcheckstamps))
  66
  67 # Prefix them all with full paths to $(INSTALL_HDR_PATH)
  68 header-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
  69 objhdr-y        := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
  70 check-y         := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y))
  71
  72
  73 ifdef ALTARCH
  74 ifeq ($(obj),include/asm-$(ARCH))
  75 altarch-y       := altarch-dir
  76 endif
  77 endif
  78
  79 # Make the definitions visible for recursive make invocations
  80 export ALTARCH
  81 export ARCHDEF
  82 export ALTARCHDEF
  83
  84 quiet_cmd_o_hdr_install   = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
  85       cmd_o_hdr_install   = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \
  86                             $(INSTALL_HDR_PATH)/$(_dst)
  87
  88 quiet_cmd_unifdef         = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
  89       cmd_unifdef         = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
  90                                    | $(HDRSED) > $@ || :
  91
  92 quiet_cmd_check           = CHECK   $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/.check.%,$(_dst)/%,$@)
  93       cmd_check           = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \
  94                               $(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@
  95
  96 quiet_cmd_remove          = REMOVE  $(_dst)/$@
  97       cmd_remove          = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@
  98
  99 quiet_cmd_mkdir           = MKDIR   $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
 100       cmd_mkdir           = mkdir -p $@
 101
 102 quiet_cmd_gen             = GEN     $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
 103       cmd_gen             = \
 104 FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@);                   \
 105 STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z.- A-Z__`;                     \
 106 (echo "/* File autogenerated by 'make headers_install' */" ;            \
 107 echo "\#ifndef $$STUBDEF" ;                                             \
 108 echo "\#define $$STUBDEF" ;                                             \
 109 echo "\# if $(ARCHDEF)" ;                                               \
 110 if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then              \
 111         echo "\#  include <$(archasm)/$$FNAME>" ;                       \
 112 else                                                                    \
 113         echo "\#  error $(archasm)/$$FNAME does not exist in"           \
 114                         "the $(ARCH) architecture" ;                    \
 115 fi ;                                                                    \
 116 echo "\# elif $(ALTARCHDEF)" ;                                          \
 117 if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then           \
 118         echo "\#  include <$(altarchasm)/$$FNAME>" ;                    \
 119 else                                                                    \
 120         echo "\#  error $(altarchasm)/$$FNAME does not exist in"        \
 121                         "the $(ALTARCH) architecture" ;                 \
 122 fi ;                                                                    \
 123 echo "\# else" ;                                                        \
 124 echo "\#  warning This machine appears to be"                           \
 125                  "neither $(ARCH) nor $(ALTARCH)." ;                    \
 126 echo "\# endif" ;                                                       \
 127 echo "\#endif /* $$STUBDEF */" ;                                        \
 128 ) > $@
 129
 130 .PHONY: __headersinst __headerscheck
 131
 132 ifdef HDRCHECK
 133 __headerscheck: $(subdir-y) $(check-y)
 134         @true
 135
 136 $(check-y) : $(INSTALL_HDR_PATH)/$(_dst)/.check.%.h : $(INSTALL_HDR_PATH)/$(_dst)/%.h
 137         $(call cmd,check)
 138
 139 # Other dependencies for $(check-y)
 140 include /dev/null $(wildcard $(check-y))
 141
 142 # ... but leave $(check-y) as .PHONY for now until those deps are actually correct.
 143 .PHONY: $(check-y)
 144
 145 else
 146 # Rules for installing headers
 147 __headersinst: $(subdir-y) $(header-y) $(altarch-y) $(objhdr-y)
 148         @true
 149
 150 $(objhdr-y) $(subdir-y) $(header-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted)
 151
 152 $(INSTALL_HDR_PATH)/$(_dst):
 153         $(call cmd,mkdir)
 154
 155 .PHONY: $(unwanted)
 156 $(unwanted):
 157         $(call cmd,remove)
 158
 159 ifdef GENASM
 160 $(objhdr-y) $(header-y): $(KBUILDFILES)
 161         $(call cmd,gen)
 162
 163 else
 164 $(objhdr-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(KBUILDFILES)
 165         $(call cmd,o_hdr_install)
 166
 167 $(header-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
 168         $(call cmd,unifdef)
 169
 170 endif
 171 endif
 172
 173 hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
 174
 175 .PHONY: altarch-dir
 176 # All the files in the normal arch dir must be created first, since we test
 177 # for their existence.
 178 altarch-dir: $(subdir-y) $(header-y) $(objhdr-y)
 179         $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
 180         $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm$(BIASMDIR)
 181
 182 # Recursion
 183 .PHONY: $(subdir-y)
 184 $(subdir-y):
 185         $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)