# ==========================================================================# Installing headers## header-y files will be installed verbatim# unifdef-y are the files where unifdef will be run before installing files# objhdr-y are generated files that will be installed verbatim## ========================================================================== UNIFDEF := unifdef -U__KERNEL__ # Eliminate the contents of (and inclusions of) compiler.hHDRSED  := sed 	-e "s/ inline / __inline__ /g" \		-e "s/[[:space:]]__user[[:space:]]\+/ /g" \		-e "s/(__user[[:space:]]\+/ (/g" \		-e "s/[[:space:]]__force[[:space:]]\+/ /g" \		-e "s/(__force[[:space:]]\+/ (/g" \		-e "s/[[:space:]]__iomem[[:space:]]\+/ /g" \		-e "s/(__iomem[[:space:]]\+/ (/g" \		-e "s/[[:space:]]__attribute_const__[[:space:]]\+/\ /g" \		-e "s/[[:space:]]__attribute_const__$$//" \		-e "/^\#include <linux\/compiler.h>/d" _dst := $(if $(dst),$(dst),$(obj)) .PHONY: __headersinst__headersinst:  ifeq (,$(patsubst include/asm/%,,$(obj)/))# For producing the generated stuff in include/asm for biarch builds, include# both sets of Kbuild files; we'll generate anything which is mentioned in# _either_ arch, and recurse into subdirectories which are mentioned in either# arch. Since some directories may exist in one but not the other, we must# use '-include'.GENASM := 1archasm	   := $(subst include/asm,asm-$(ARCH),$(obj))altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))-include $(srctree)/include/$(archasm)/Kbuild-include $(srctree)/include/$(altarchasm)/Kbuildelseinclude $(srctree)/$(obj)/Kbuildendif include scripts/Kbuild.include # If this is include/asm-$(ARCH) and there's no $(ALTARCH), then# override $(_dst) so that we install to include/asm directly.ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH))     _dst := include/asmendif header-y	:= $(sort $(header-y))unifdef-y	:= $(sort $(unifdef-y))subdir-y	:= $(patsubst %/,%,$(filter %/, $(header-y)))header-y	:= $(filter-out %/, $(header-y))header-y	:= $(filter-out $(unifdef-y),$(header-y)) ifdef ALTARCHifeq ($(obj),include/asm-$(ARCH))altarch-y	:= altarch-direndifendif # Make the definitions visible for recursive make invocationsexport ALTARCHexport ARCHDEFexport ALTARCHDEF quiet_cmd_o_hdr_install   = INSTALL $(_dst)/$@      cmd_o_hdr_install   = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst) quiet_cmd_headers_install = INSTALL $(_dst)/$@      cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@		\			    > $(INSTALL_HDR_PATH)/$(_dst)/$@ quiet_cmd_unifdef	  = UNIFDEF $(_dst)/$@      cmd_unifdef	  = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED)	\                            > $(INSTALL_HDR_PATH)/$(_dst)/$@ || : quiet_cmd_check		  = CHECK   $(_dst)/$@      cmd_check		  = $(srctree)/scripts/hdrcheck.sh		\                              $(INSTALL_HDR_PATH)/include		\			      $(INSTALL_HDR_PATH)/$(_dst)/$@ quiet_cmd_mkdir		  = MKDIR   $@      cmd_mkdir		  = mkdir -p $(INSTALL_HDR_PATH)/$@ quiet_cmd_gen		  = GEN     $(_dst)/$@      cmd_gen		  = \STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`;				\(echo "/* File autogenerated by 'make headers_install' */" ;		\echo "\#ifndef $$STUBDEF" ;						\echo "\#define $$STUBDEF" ;						\echo "\# if $(ARCHDEF)" ;						\if [ -r $(srctree)/include/$(archasm)/$@ ]; then			\	echo "\#  include <$(archasm)/$@>" ;				\else									\	echo "\#  error $(archasm)/$@ does not exist in"		\			"the $(ARCH) architecture" ;			\fi ;									\echo "\# elif $(ALTARCHDEF)" ;						\if [ -r $(srctree)/include/$(altarchasm)/$@ ]; then			\	echo "\#  include <$(altarchasm)/$@>" ;				\else									\	echo "\#  error $(altarchasm)/$@ does not exist in"		\			"the $(ALTARCH) architecture" ;			\fi ;									\echo "\# else" ;							\echo "\#  warning This machine appears to be"				\		 "neither $(ARCH) nor $(ALTARCH)." ;			\echo "\# endif" ;							\echo "\#endif /* $$STUBDEF */" ;					\) > $(INSTALL_HDR_PATH)/$(_dst)/$@ __headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y) .PHONY: $(header-y) $(unifdef-y) $(subdir-y) ifdef HDRCHECK# Rules for checking headers$(objhdr-y) $(header-y) $(unifdef-y):	$(call cmd,check)else# Rules for installing headers $(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): $(_dst) .PHONY: $(_dst)$(_dst):	$(call cmd,mkdir) ifdef GENASM$(objhdr-y) $(header-y) $(unifdef-y):	$(call cmd,gen) else$(objhdr-y):	$(call cmd,o_hdr_install) $(header-y):	$(call cmd,headers_install) $(unifdef-y):	$(call cmd,unifdef)endifendif hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj .PHONY: altarch-diraltarch-dir:	$(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)	$(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm # Recursion$(subdir-y):	$(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)