| 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 | # objhdr-y - Same as header-y but for generated files |
| 7 | # |
| 8 | # ========================================================================== |
| 9 | |
| 10 | # called may set destination dir (when installing to asm/) |
| 11 | _dst := $(if $(dst),$(dst),$(obj)) |
| 12 | |
| 13 | kbuild-file := $(srctree)/$(obj)/Kbuild |
| 14 | include $(kbuild-file) |
| 15 | |
| 16 | _dst := $(if $(destination-y),$(destination-y),$(_dst)) |
| 17 | |
| 18 | include scripts/Kbuild.include |
| 19 | |
| 20 | install := $(INSTALL_HDR_PATH)/$(_dst) |
| 21 | |
| 22 | header-y := $(sort $(header-y)) |
| 23 | subdirs := $(patsubst %/,%,$(filter %/, $(header-y))) |
| 24 | header-y := $(filter-out %/, $(header-y)) |
| 25 | |
| 26 | # files used to track state of install/check |
| 27 | install-file := $(install)/.install |
| 28 | check-file := $(install)/.check |
| 29 | |
| 30 | # generic-y list all files an architecture uses from asm-generic |
| 31 | # Use this to build a list of headers which require a wrapper |
| 32 | wrapper-files := $(filter $(header-y), $(generic-y)) |
| 33 | |
| 34 | # all headers files for this dir |
| 35 | header-y := $(filter-out $(generic-y), $(header-y)) |
| 36 | all-files := $(header-y) $(objhdr-y) $(wrapper-files) |
| 37 | input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \ |
| 38 | $(addprefix $(objtree)/$(obj)/,$(objhdr-y)) |
| 39 | output-files := $(addprefix $(install)/, $(all-files)) |
| 40 | |
| 41 | # Work out what needs to be removed |
| 42 | oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h)) |
| 43 | unwanted := $(filter-out $(all-files),$(oldheaders)) |
| 44 | |
| 45 | # Prefix unwanted with full paths to $(INSTALL_HDR_PATH) |
| 46 | unwanted-file := $(addprefix $(install)/, $(unwanted)) |
| 47 | |
| 48 | printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@)) |
| 49 | |
| 50 | quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\ |
| 51 | file$(if $(word 2, $(all-files)),s)) |
| 52 | cmd_install = \ |
| 53 | $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \ |
| 54 | $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \ |
| 55 | for F in $(wrapper-files); do \ |
| 56 | echo "\#include <asm-generic/$$F>" > $(install)/$$F; \ |
| 57 | done; \ |
| 58 | touch $@ |
| 59 | |
| 60 | quiet_cmd_remove = REMOVE $(unwanted) |
| 61 | cmd_remove = rm -f $(unwanted-file) |
| 62 | |
| 63 | quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files) |
| 64 | # Headers list can be pretty long, xargs helps to avoid |
| 65 | # the "Argument list too long" error. |
| 66 | cmd_check = for f in $(all-files); do \ |
| 67 | echo "$(install)/$${f}"; done \ |
| 68 | | xargs \ |
| 69 | $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \ |
| 70 | touch $@ |
| 71 | |
| 72 | PHONY += __headersinst __headerscheck |
| 73 | |
| 74 | ifndef HDRCHECK |
| 75 | # Rules for installing headers |
| 76 | __headersinst: $(subdirs) $(install-file) |
| 77 | @: |
| 78 | |
| 79 | targets += $(install-file) |
| 80 | $(install-file): scripts/headers_install.pl $(input-files) FORCE |
| 81 | $(if $(unwanted),$(call cmd,remove),) |
| 82 | $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@))) |
| 83 | $(call if_changed,install) |
| 84 | |
| 85 | else |
| 86 | __headerscheck: $(subdirs) $(check-file) |
| 87 | @: |
| 88 | |
| 89 | targets += $(check-file) |
| 90 | $(check-file): scripts/headers_check.pl $(output-files) FORCE |
| 91 | $(call if_changed,check) |
| 92 | |
| 93 | endif |
| 94 | |
| 95 | # Recursion |
| 96 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
| 97 | .PHONY: $(subdirs) |
| 98 | $(subdirs): |
| 99 | $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@ |
| 100 | |
| 101 | targets := $(wildcard $(sort $(targets))) |
| 102 | cmd_files := $(wildcard \ |
| 103 | $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
| 104 | |
| 105 | ifneq ($(cmd_files),) |
| 106 | include $(cmd_files) |
| 107 | endif |
| 108 | |
| 109 | .PHONY: $(PHONY) |
| 110 | PHONY += FORCE |
| 111 | FORCE: ; |