forked from Minki/linux
kbuild: re-implement Makefile.headersinst without recursion
Since commit fcc8487d47 ("uapi: export all headers under uapi
directories"), the headers in uapi directories are all exported by
default although exceptional cases are still allowed by the syntax
'no-export-headers'.
The traditional directory descending has been kept (in a somewhat
hacky way), but it is actually unneeded.
Get rid of it to simplify the code.
Also, handle files one by one instead of the previous per-directory
processing. This will emit much more log, but I like it.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada
parent
59b2bd05f5
commit
d5470d1443
8
Makefile
8
Makefile
@ -1194,13 +1194,13 @@ PHONY += headers
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headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
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$(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \
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$(error Headers not exportable for the $(SRCARCH) architecture))
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$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include
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$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi dst=include
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$(Q)$(MAKE) $(hdr-inst)=include/uapi
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$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi
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PHONY += headers_check
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headers_check: headers
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$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
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$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi dst=include HDRCHECK=1
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$(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
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$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi HDRCHECK=1
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ifdef CONFIG_HEADERS_INSTALL
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prepare: headers
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@ -1,14 +1,14 @@
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# SPDX-License-Identifier: GPL-2.0
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ifeq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/a.out.h),)
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no-export-headers += a.out.h
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no-export-headers += linux/a.out.h
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endif
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ifeq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm.h),)
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no-export-headers += kvm.h
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no-export-headers += linux/kvm.h
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endif
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ifeq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/kvm_para.h),)
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ifeq ($(wildcard $(objtree)/arch/$(SRCARCH)/include/generated/uapi/asm/kvm_para.h),)
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no-export-headers += kvm_para.h
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no-export-headers += linux/kvm_para.h
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endif
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endif
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@ -14,109 +14,87 @@ __headers:
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include scripts/Kbuild.include
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srcdir := $(srctree)/$(obj)
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src := $(srctree)/$(obj)
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gen := $(objtree)/$(subst include/,include/generated/,$(obj))
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dst := usr/include
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# When make is run under a fakechroot environment, the function
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# $(wildcard $(srcdir)/*/.) doesn't only return directories, but also regular
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# files. So, we are using a combination of sort/dir/wildcard which works
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# with fakechroot.
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subdirs := $(patsubst $(srcdir)/%/,%,\
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$(filter-out $(srcdir)/,\
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$(sort $(dir $(wildcard $(srcdir)/*/)))))
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-include $(src)/Kbuild
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# Recursion
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__headers: $(subdirs)
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src-subdirs := $(patsubst $(src)/%/,%,$(wildcard $(src)/*/))
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gen-subdirs := $(patsubst $(gen)/%/,%,$(wildcard $(gen)/*/))
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all-subdirs := $(sort $(src-subdirs) $(gen-subdirs))
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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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src-headers := $(if $(src-subdirs), $(shell cd $(src) && find $(src-subdirs) -name '*.h'))
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src-headers := $(filter-out $(no-export-headers), $(src-headers))
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gen-headers := $(if $(gen-subdirs), $(shell cd $(gen) && find $(gen-subdirs) -name '*.h'))
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gen-headers := $(filter-out $(no-export-headers), $(gen-headers))
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# Skip header install/check for include/uapi and arch/$(SRCARCH)/include/uapi.
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# We have only sub-directories there.
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skip-inst := $(if $(filter %/uapi,$(obj)),1)
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# If the same header is exported from source and generated directories,
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# the former takes precedence, but this should be warned.
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duplicated := $(filter $(gen-headers), $(src-headers))
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$(if $(duplicated), $(warning duplicated header export: $(duplicated)))
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ifeq ($(skip-inst),)
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gen-headers := $(filter-out $(duplicated), $(gen-headers))
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# Kbuild file is optional
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kbuild-file := $(srctree)/$(obj)/Kbuild
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-include $(kbuild-file)
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installdir := usr/$(dst)
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gendir := $(objtree)/$(subst include/,include/generated/,$(obj))
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header-files := $(notdir $(wildcard $(srcdir)/*.h))
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header-files := $(filter-out $(no-export-headers), $(header-files))
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genhdr-files := $(notdir $(wildcard $(gendir)/*.h))
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genhdr-files := $(filter-out $(header-files), $(genhdr-files))
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# files used to track state of install/check
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install-file := $(installdir)/.install
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check-file := $(installdir)/.check
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# all headers files for this dir
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all-files := $(header-files) $(genhdr-files)
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output-files := $(addprefix $(installdir)/, $(all-files))
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# Add dst path prefix
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all-subdirs := $(addprefix $(dst)/, $(all-subdirs))
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src-headers := $(addprefix $(dst)/, $(src-headers))
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gen-headers := $(addprefix $(dst)/, $(gen-headers))
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all-headers := $(src-headers) $(gen-headers)
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# Work out what needs to be removed
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oldheaders := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h))
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unwanted := $(filter-out $(all-files),$(oldheaders))
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old-subdirs := $(wildcard $(all-subdirs))
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old-headers := $(if $(old-subdirs),$(shell find $(old-subdirs) -name '*.h'))
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unwanted := $(filter-out $(all-headers), $(old-headers))
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# Prefix unwanted with full paths to objtree
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unwanted-file := $(addprefix $(installdir)/, $(unwanted))
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# Create directories
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existing-dirs := $(sort $(dir $(old-headers)))
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wanted-dirs := $(sort $(dir $(all-headers)))
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new-dirs := $(filter-out $(existing-dirs), $(wanted-dirs))
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$(if $(new-dirs), $(shell mkdir -p $(new-dirs)))
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printdir = $(patsubst %/,%,$(dir $@))
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quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
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file$(if $(word 2, $(all-files)),s))
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cmd_install = \
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$(CONFIG_SHELL) $< $(installdir) $(srcdir) $(header-files); \
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$(CONFIG_SHELL) $< $(installdir) $(gendir) $(genhdr-files); \
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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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# Headers list can be pretty long, xargs helps to avoid
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# the "Argument list too long" error.
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cmd_check = for f in $(all-files); do \
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echo "$(installdir)/$${f}"; done \
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| xargs \
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$(PERL) $< usr/include $(SRCARCH); \
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touch $@
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# Rules
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ifndef HDRCHECK
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# Rules for installing headers
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__headers: $(install-file)
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@:
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targets += $(install-file)
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$(install-file): scripts/headers_install.sh \
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$(addprefix $(srcdir)/,$(header-files)) \
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$(addprefix $(gendir)/,$(genhdr-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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quiet_cmd_install = HDRINST $@
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cmd_install = $(CONFIG_SHELL) $(srctree)/scripts/headers_install.sh $(@D) $(<D) $(@F)
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$(src-headers): $(dst)/%.h: $(src)/%.h $(srctree)/scripts/headers_install.sh FORCE
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$(call if_changed,install)
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else
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__headers: $(check-file)
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$(gen-headers): $(dst)/%.h: $(gen)/%.h $(srctree)/scripts/headers_install.sh FORCE
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$(call if_changed,install)
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quiet_cmd_remove = REMOVE $(unwanted)
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cmd_remove = rm -f $(unwanted)
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__headers: $(all-headers)
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ifneq ($(unwanted),)
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$(call cmd,remove)
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endif
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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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existing-headers := $(filter $(old-headers), $(all-headers))
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-include $(foreach f,$(existing-headers),$(dir $(f)).$(notdir $(f)).cmd)
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else
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quiet_cmd_check = HDRCHK $<
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cmd_check = $(PERL) $(srctree)/scripts/headers_check.pl $(dst) $(SRCARCH) $<; touch $@
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check-files := $(addsuffix .chk, $(all-headers))
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$(check-files): $(dst)/%.chk : $(dst)/% $(srctree)/scripts/headers_check.pl
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$(call cmd,check)
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__headers: $(check-files)
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@:
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endif
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cmd_files := $(wildcard \
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$(foreach f,$(sort $(targets)),$(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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endif # skip-inst
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PHONY += FORCE
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FORCE: ;
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FORCE:
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.PHONY: $(PHONY)
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