1# ========================================================================== 2# Installing headers 3# 4# header-y - list files to be installed. They are preprocessed 5# to remove __KERNEL__ section of the file 6# unifdef-y - Same as header-y. Obsolete 7# objhdr-y - Same as header-y but for generated files 8# 9# ========================================================================== 10 11# called may set destination dir (when installing to asm/) 12_dst := $(if $(dst),$(dst),$(obj)) 13 14kbuild-file := $(srctree)/$(obj)/Kbuild 15include $(kbuild-file) 16 17include scripts/Kbuild.include 18 19install := $(INSTALL_HDR_PATH)/$(_dst) 20 21header-y := $(sort $(header-y) $(unifdef-y)) 22subdirs := $(patsubst %/,%,$(filter %/, $(header-y))) 23header-y := $(filter-out %/, $(header-y)) 24 25# files used to track state of install/check 26install-file := $(install)/.install 27check-file := $(install)/.check 28 29# all headers files for this dir 30all-files := $(header-y) $(objhdr-y) 31input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \ 32 $(addprefix $(objtree)/$(obj)/,$(objhdr-y)) 33output-files := $(addprefix $(install)/, $(all-files)) 34 35# Work out what needs to be removed 36oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h)) 37unwanted := $(filter-out $(all-files),$(oldheaders)) 38 39# Prefix unwanted with full paths to $(INSTALL_HDR_PATH) 40unwanted-file := $(addprefix $(install)/, $(unwanted)) 41 42printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@)) 43 44quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\ 45 file$(if $(word 2, $(all-files)),s)) 46 cmd_install = \ 47 $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \ 48 $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \ 49 touch $@ 50 51quiet_cmd_remove = REMOVE $(unwanted) 52 cmd_remove = rm -f $(unwanted-file) 53 54quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files) 55 cmd_check = $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH) \ 56 $(addprefix $(install)/, $(all-files)); \ 57 touch $@ 58 59PHONY += __headersinst __headerscheck 60 61ifndef HDRCHECK 62# Rules for installing headers 63__headersinst: $(subdirs) $(install-file) 64 @: 65 66targets += $(install-file) 67$(install-file): scripts/headers_install.pl $(input-files) FORCE 68 $(if $(unwanted),$(call cmd,remove),) 69 $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@))) 70 $(call if_changed,install) 71 72else 73__headerscheck: $(subdirs) $(check-file) 74 @: 75 76targets += $(check-file) 77$(check-file): scripts/headers_check.pl $(output-files) FORCE 78 $(call if_changed,check) 79 80endif 81 82# Recursion 83hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 84.PHONY: $(subdirs) 85$(subdirs): 86 $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@ 87 88targets := $(wildcard $(sort $(targets))) 89cmd_files := $(wildcard \ 90 $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 91 92ifneq ($(cmd_files),) 93 include $(cmd_files) 94endif 95 96.PHONY: $(PHONY) 97PHONY += FORCE 98FORCE: ; 99