mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2024-12-29 17:23:36 +00:00
7712401ae9
Move the core functionality of headers_install and headers_check to two small perl scripts. The makefile is adapted to use the perl scrip and changed to operate on all files in a directory. So if one file is changed then all files in the directory is processed. perl were chosen for the helper scripts because this is pure text processing which perl is good at and especially the headers_check.pl script are expected to see changes / new checks implmented. The speed is ~300% faster on this box. And the output generated to the screen is now down to two lines per directory (one for install, one for check) so it is easier to scroll back after a kernel build. The perl scripts has been brought to sanity by patient feedback from: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
98 lines
3.0 KiB
Makefile
98 lines
3.0 KiB
Makefile
# ==========================================================================
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# Installing headers
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#
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# header-y - list files to be installed. They are preprocessed
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# to remove __KERNEL__ section of the file
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# unifdef-y - Same as header-y. Obsolete
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# objhdr-y - Same as header-y but for generated files
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#
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# ==========================================================================
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# called may set destination dir (when installing to asm/)
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_dst := $(if $(dst),$(dst),$(obj))
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kbuild-file := $(srctree)/$(obj)/Kbuild
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include $(kbuild-file)
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include scripts/Kbuild.include
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install := $(INSTALL_HDR_PATH)/$(_dst)
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header-y := $(sort $(header-y) $(unifdef-y))
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subdirs := $(patsubst %/,%,$(filter %/, $(header-y)))
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header-y := $(filter-out %/, $(header-y))
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# files used to track state of install/check
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install-file := $(install)/.install
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check-file := $(install)/.check
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# all headers files for this dir
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all-files := $(header-y) $(objhdr-y)
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input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
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$(addprefix $(objtree)/$(obj)/,$(objhdr-y))
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output-files := $(addprefix $(install)/, $(all-files))
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# Work out what needs to be removed
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oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
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unwanted := $(filter-out $(all-files),$(oldheaders))
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# Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
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unwanted-file := $(addprefix $(install)/, $(unwanted))
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printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
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quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
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file$(if $(word 2, $(all-files)),s))
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cmd_install = $(PERL) $< $(srctree)/$(obj) $(install) $(header-y); \
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$(PERL) $< $(objtree)/$(obj) $(install) $(objhdr-y); \
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touch $@
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quiet_cmd_remove = REMOVE $(unwanted)
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cmd_remove = rm -f $(unwanted-file)
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quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files)
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cmd_check = $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH) \
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$(addprefix $(install)/, $(all-files)); \
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touch $@
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PHONY += __headersinst __headerscheck
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ifndef HDRCHECK
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# Rules for installing headers
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__headersinst: $(subdirs) $(install-file)
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@:
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targets += $(install-file)
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$(install-file): scripts/headers_install.pl $(input-files) FORCE
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$(if $(unwanted),$(call cmd,remove),)
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$(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
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$(call if_changed,install)
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else
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__headerscheck: $(subdirs) $(check-file)
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@:
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targets += $(check-file)
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$(check-file): scripts/headers_check.pl $(output-files) FORCE
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$(call if_changed,check)
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endif
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# Recursion
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hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
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.PHONY: $(subdirs)
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$(subdirs):
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$(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
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targets := $(wildcard $(sort $(targets)))
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cmd_files := $(wildcard \
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$(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
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ifneq ($(cmd_files),)
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include $(cmd_files)
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endif
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.PHONY: $(PHONY)
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PHONY += FORCE
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FORCE: ;
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