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 26kbuild-file := $(srctree)/$(obj)/Kbuild 27include $(kbuild-file) 28 29include scripts/Kbuild.include 30 31# If this is include/asm-$(ARCH) then override $(_dst) so that 32# we install to include/asm directly. 33# Unless $(BIASMDIR) is set, in which case we're probably doing 34# a 'headers_install_all' build and we should keep the -$(ARCH) 35# in the directory name. 36ifeq ($(obj),include/asm-$(ARCH)$(BIASMDIR)) 37 _dst := include/asm 38endif 39 40header-y := $(sort $(header-y) $(unifdef-y)) 41subdir-y := $(patsubst %/,%,$(filter %/, $(header-y))) 42header-y := $(filter-out %/, $(header-y)) 43 44# stamp files for header checks 45check-y := $(patsubst %,.check.%,$(header-y) $(objhdr-y)) 46 47# Work out what needs to be removed 48oldheaders := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h)) 49unwanted := $(filter-out $(header-y) $(objhdr-y),$(oldheaders)) 50 51oldcheckstamps := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h)) 52unwanted += $(filter-out $(check-y),$(oldcheckstamps)) 53 54# Prefix them all with full paths to $(INSTALL_HDR_PATH) 55header-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y)) 56objhdr-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y)) 57check-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y)) 58 59quiet_cmd_o_hdr_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@) 60 cmd_o_hdr_install = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \ 61 $(INSTALL_HDR_PATH)/$(_dst) 62 63quiet_cmd_unifdef = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@) 64 cmd_unifdef = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \ 65 | $(HDRSED) > $@ || : 66 67quiet_cmd_check = CHECK $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/.check.%,$(_dst)/%,$@) 68 cmd_check = $(CONFIG_SHELL) $(srctree)/scripts/hdrcheck.sh \ 69 $(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@ 70 71quiet_cmd_remove = REMOVE $(_dst)/$@ 72 cmd_remove = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@ 73 74quiet_cmd_mkdir = MKDIR $(patsubst $(INSTALL_HDR_PATH)/%,%,$@) 75 cmd_mkdir = mkdir -p $@ 76 77.PHONY: __headersinst __headerscheck 78 79ifdef HDRCHECK 80__headerscheck: $(subdir-y) $(check-y) 81 @true 82 83$(check-y) : $(INSTALL_HDR_PATH)/$(_dst)/.check.%.h : $(INSTALL_HDR_PATH)/$(_dst)/%.h 84 $(call cmd,check) 85 86# Other dependencies for $(check-y) 87include /dev/null $(wildcard $(check-y)) 88 89# ... but leave $(check-y) as .PHONY for now until those deps are actually correct. 90.PHONY: $(check-y) 91 92else 93# Rules for installing headers 94__headersinst: $(subdir-y) $(header-y) $(objhdr-y) 95 @true 96 97$(objhdr-y) $(subdir-y) $(header-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted) 98 99$(INSTALL_HDR_PATH)/$(_dst): 100 $(call cmd,mkdir) 101 102.PHONY: $(unwanted) 103$(unwanted): 104 $(call cmd,remove) 105 106$(objhdr-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(objtree)/$(obj)/%.h $(kbuild-file) 107 $(call cmd,o_hdr_install) 108 109$(header-y): $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(kbuild-file) 110 $(call cmd,unifdef) 111 112endif 113 114hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 115 116# Recursion 117.PHONY: $(subdir-y) 118$(subdir-y): 119 $(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel) 120