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Makefile | 2009-09-09 | 3.3 KB | 105 lines |
- # ==========================================================================
- # Installing headers
- #
- # header-y - list files to be installed. They are preprocessed
- # to remove __KERNEL__ section of the file
- # unifdef-y - Same as header-y. Obsolete
- # objhdr-y - Same as header-y but for generated files
- #
- # ==========================================================================
-
- # called may set destination dir (when installing to asm/)
- _dst := $(if $(dst),$(dst),$(obj))
-
- kbuild-file := $(srctree)/$(obj)/Kbuild
- include $(kbuild-file)
-
- _dst := $(if $(destination-y),$(destination-y),$(_dst))
-
- include scripts/Kbuild.include
-
- install := $(INSTALL_HDR_PATH)/$(_dst)
-
- header-y := $(sort $(header-y) $(unifdef-y))
- subdirs := $(patsubst %/,%,$(filter %/, $(header-y)))
- header-y := $(filter-out %/, $(header-y))
-
- # files used to track state of install/check
- install-file := $(install)/.install
- check-file := $(install)/.check
-
- # all headers files for this dir
- all-files := $(header-y) $(objhdr-y)
- input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
- $(addprefix $(objtree)/$(obj)/,$(objhdr-y))
- output-files := $(addprefix $(install)/, $(all-files))
-
- # Work out what needs to be removed
- oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
- unwanted := $(filter-out $(all-files),$(oldheaders))
-
- # Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
- unwanted-file := $(addprefix $(install)/, $(unwanted))
-
- printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
-
- quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
- file$(if $(word 2, $(all-files)),s))
- cmd_install = \
- $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
- $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \
- touch $@
-
- quiet_cmd_remove = REMOVE $(unwanted)
- cmd_remove = rm -f $(unwanted-file)
-
- quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files)
- # Headers list can be pretty long, xargs helps to avoid
- # the "Argument list too long" error.
- cmd_check = for f in $(all-files); do \
- echo "$(install)/$${f}"; done \
- | xargs \
- $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
- touch $@
-
- PHONY += __headersinst __headerscheck
-
- ifndef HDRCHECK
- # Rules for installing headers
- __headersinst: $(subdirs) $(install-file)
- @:
-
- targets += $(install-file)
- $(install-file): scripts/headers_install.pl $(input-files) FORCE
- $(if $(unwanted),$(call cmd,remove),)
- $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
- $(call if_changed,install)
-
- else
- __headerscheck: $(subdirs) $(check-file)
- @:
-
- targets += $(check-file)
- $(check-file): scripts/headers_check.pl $(output-files) FORCE
- $(call if_changed,check)
-
- endif
-
- # Recursion
- hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
- .PHONY: $(subdirs)
- $(subdirs):
- $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
-
- targets := $(wildcard $(sort $(targets)))
- cmd_files := $(wildcard \
- $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
-
- ifneq ($(cmd_files),)
- include $(cmd_files)
- endif
-
- .PHONY: $(PHONY)
- PHONY += FORCE
- FORCE: ;
-