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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 := 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 .PHONY: __headersinst
  27 __headersinst:
  28
  29
  30 ifeq (,$(patsubst include/asm/%,,$(obj)/))
  31 # For producing the generated stuff in include/asm for biarch builds, include
  32 # both sets of Kbuild files; we'll generate anything which is mentioned in
  33 # _either_ arch, and recurse into subdirectories which are mentioned in either
  34 # arch. Since some directories may exist in one but not the other, we must
  35 # use '-include'.
  36 GENASM := 1
  37 archasm    := $(subst include/asm,asm-$(ARCH),$(obj))
  38 altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
  39 -include $(srctree)/include/$(archasm)/Kbuild
  40 -include $(srctree)/include/$(altarchasm)/Kbuild
  41 else
  42 include $(srctree)/$(obj)/Kbuild
  43 endif
  44
  45 include scripts/Kbuild.include
  46
  47 # If this is include/asm-$(ARCH) and there's no $(ALTARCH), then
  48 # override $(_dst) so that we install to include/asm directly.
  49 ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH))
  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 ifdef ALTARCH
  60 ifeq ($(obj),include/asm-$(ARCH))
  61 altarch-y       := altarch-dir
  62 endif
  63 endif
  64
  65 # Make the definitions visible for recursive make invocations
  66 export ALTARCH
  67 export ARCHDEF
  68 export ALTARCHDEF
  69
  70 quiet_cmd_o_hdr_install   = INSTALL $(_dst)/$@
  71       cmd_o_hdr_install   = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst)
  72
  73 quiet_cmd_headers_install = INSTALL $(_dst)/$@
  74       cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@              \
  75                             > $(INSTALL_HDR_PATH)/$(_dst)/$@
  76
  77 quiet_cmd_unifdef         = UNIFDEF $(_dst)/$@
  78       cmd_unifdef         = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED) \
  79                             > $(INSTALL_HDR_PATH)/$(_dst)/$@ || :
  80
  81 quiet_cmd_check           = CHECK   $(_dst)/$@
  82       cmd_check           = $(srctree)/scripts/hdrcheck.sh              \
  83                               $(INSTALL_HDR_PATH)/include               \
  84                               $(INSTALL_HDR_PATH)/$(_dst)/$@
  85
  86 quiet_cmd_mkdir           = MKDIR   $@
  87       cmd_mkdir           = mkdir -p $(INSTALL_HDR_PATH)/$@
  88
  89 quiet_cmd_gen             = GEN     $(_dst)/$@
  90       cmd_gen             = \
  91 STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`;                            \
  92 (echo "/* File autogenerated by 'make headers_install' */" ;            \
  93 echo "\#ifndef $$STUBDEF" ;                                             \
  94 echo "\#define $$STUBDEF" ;                                             \
  95 echo "\# if $(ARCHDEF)" ;                                               \
  96 if [ -r $(INSTALL_HDR_PATH)/include/$(archasm)/$@ ]; then               \
  97         echo "\#  include <$(archasm)/$@>" ;                            \
  98 else                                                                    \
  99         echo "\#  error $(archasm)/$@ does not exist in"                \
 100                         "the $(ARCH) architecture" ;                    \
 101 fi ;                                                                    \
 102 echo "\# elif $(ALTARCHDEF)" ;                                          \
 103 if [ -r $(INSTALL_HDR_PATH)/include/$(altarchasm)/$@ ]; then            \
 104         echo "\#  include <$(altarchasm)/$@>" ;                         \
 105 else                                                                    \
 106         echo "\#  error $(altarchasm)/$@ does not exist in"             \
 107                         "the $(ALTARCH) architecture" ;                 \
 108 fi ;                                                                    \
 109 echo "\# else" ;                                                        \
 110 echo "\#  warning This machine appears to be"                           \
 111                  "neither $(ARCH) nor $(ALTARCH)." ;                    \
 112 echo "\# endif" ;                                                       \
 113 echo "\#endif /* $$STUBDEF */" ;                                        \
 114 ) > $(INSTALL_HDR_PATH)/$(_dst)/$@
 115
 116 __headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
 117
 118 .PHONY: $(header-y) $(unifdef-y) $(subdir-y)
 119
 120 ifdef HDRCHECK
 121 # Rules for checking headers
 122 $(objhdr-y) $(header-y) $(unifdef-y):
 123         $(call cmd,check)
 124 else
 125 # Rules for installing headers
 126
 127 $(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): $(_dst)
 128
 129 .PHONY: $(_dst)
 130 $(_dst):
 131         $(call cmd,mkdir)
 132
 133 ifdef GENASM
 134 $(objhdr-y) $(header-y) $(unifdef-y):
 135         $(call cmd,gen)
 136
 137 else
 138 $(objhdr-y):
 139         $(call cmd,o_hdr_install)
 140
 141 $(header-y):
 142         $(call cmd,headers_install)
 143
 144 $(unifdef-y):
 145         $(call cmd,unifdef)
 146 endif
 147 endif
 148
 149 hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
 150
 151 .PHONY: altarch-dir
 152 # All the files in the normal arch dir must be created first, since we test
 153 # for their existence.
 154 altarch-dir: $(subdir-y) $(header-y) $(unifdef-y) $(objhdr-y)
 155         $(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
 156         $(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm
 157
 158 # Recursion
 159 $(subdir-y):
 160         $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)