mirror of https://gitee.com/openkylin/linux.git
Use dependencies for 'make headers_install'.
Re-export header files only if either they or their controlling Kbuild file has actually changed. Also allow for similar dependencies with 'headers_check', once we properly create the dependencies for those. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse
parent
b4daf69722
commit
de78912582
1
Makefile
1
Makefile
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@ -898,7 +898,6 @@ headers_install: include/linux/version.h
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echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
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exit 1 ; fi
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$(Q)unifdef -Ux /dev/null
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$(Q)rm -rf $(INSTALL_HDR_PATH)/include
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$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include
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PHONY += headers_check
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@ -23,30 +23,30 @@ HDRSED := sed -e "s/ inline / __inline__ /g" \
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_dst := $(if $(dst),$(dst),$(obj))
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.PHONY: __headersinst
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__headersinst:
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ifeq (,$(patsubst include/asm/%,,$(obj)/))
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# For producing the generated stuff in include/asm for biarch builds, include
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# both sets of Kbuild files; we'll generate anything which is mentioned in
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# _either_ arch, and recurse into subdirectories which are mentioned in either
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# arch. Since some directories may exist in one but not the other, we must
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# use '-include'.
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# use $(wildcard...).
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GENASM := 1
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archasm := $(subst include/asm,asm-$(ARCH),$(obj))
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altarchasm := $(subst include/asm,asm-$(ALTARCH),$(obj))
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-include $(srctree)/include/$(archasm)/Kbuild
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-include $(srctree)/include/$(altarchasm)/Kbuild
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KBUILDFILES := $(wildcard $(srctree)/include/$(archasm)/Kbuild $(srctree)/include/$(altarchasm)/Kbuild)
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else
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include $(srctree)/$(obj)/Kbuild
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KBUILDFILES := $(srctree)/$(obj)/Kbuild
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endif
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include scripts/Kbuild.include
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include $(KBUILDFILES)
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include scripts/Kbuild.include
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# If this is include/asm-$(ARCH) and there's no $(ALTARCH), then
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# override $(_dst) so that we install to include/asm directly.
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ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH))
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# Unless $(BIASMDIR) is set, in which case we're probably doing
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# a 'headers_install_all' build and we should keep the -$(ARCH)
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# in the directory name.
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ifeq ($(obj)$(ALTARCH),include/asm-$(ARCH)$(BIASMDIR))
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_dst := include/asm
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endif
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@ -56,6 +56,23 @@ subdir-y := $(patsubst %/,%,$(filter %/, $(header-y)))
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header-y := $(filter-out %/, $(header-y))
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header-y := $(filter-out $(unifdef-y),$(header-y))
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# stamp files for header checks
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check-y := $(patsubst %,.check.%,$(header-y) $(unifdef-y) $(objhdr-y))
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# Work out what needs to be removed
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oldheaders := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/*.h))
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unwanted := $(filter-out $(header-y) $(unifdef-y) $(objhdr-y),$(oldheaders))
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oldcheckstamps := $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$(wildcard $(INSTALL_HDR_PATH)/$(_dst)/.check.*.h))
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unwanted += $(filter-out $(check-y),$(oldcheckstamps))
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# Prefix them all with full paths to $(INSTALL_HDR_PATH)
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header-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(header-y))
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unifdef-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(unifdef-y))
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objhdr-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(objhdr-y))
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check-y := $(patsubst %,$(INSTALL_HDR_PATH)/$(_dst)/%,$(check-y))
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ifdef ALTARCH
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ifeq ($(obj),include/asm-$(ARCH))
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altarch-y := altarch-dir
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@ -67,43 +84,47 @@ export ALTARCH
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export ARCHDEF
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export ALTARCHDEF
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quiet_cmd_o_hdr_install = INSTALL $(_dst)/$@
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cmd_o_hdr_install = cp $(objtree)/$(obj)/$@ $(INSTALL_HDR_PATH)/$(_dst)
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quiet_cmd_o_hdr_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
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cmd_o_hdr_install = cp $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(objtree)/$(obj)/%,$@) \
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$(INSTALL_HDR_PATH)/$(_dst)
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quiet_cmd_headers_install = INSTALL $(_dst)/$@
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cmd_headers_install = $(HDRSED) $(srctree)/$(obj)/$@ \
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> $(INSTALL_HDR_PATH)/$(_dst)/$@
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quiet_cmd_headers_install = INSTALL $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
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cmd_headers_install = $(HDRSED) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
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> $@
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quiet_cmd_unifdef = UNIFDEF $(_dst)/$@
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cmd_unifdef = $(UNIFDEF) $(srctree)/$(obj)/$@ | $(HDRSED) \
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> $(INSTALL_HDR_PATH)/$(_dst)/$@ || :
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quiet_cmd_unifdef = UNIFDEF $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
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cmd_unifdef = $(UNIFDEF) $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,$(srctree)/$(obj)/%,$@) \
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| $(HDRSED) > $@ || :
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quiet_cmd_check = CHECK $(_dst)/$@
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quiet_cmd_check = CHECK $(patsubst $(INSTALL_HDR_PATH)/$(_dst)/.check.%,$(_dst)/%,$@)
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cmd_check = $(srctree)/scripts/hdrcheck.sh \
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$(INSTALL_HDR_PATH)/include \
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$(INSTALL_HDR_PATH)/$(_dst)/$@
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$(INSTALL_HDR_PATH)/include $(subst /.check.,/,$@) $@
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quiet_cmd_mkdir = MKDIR $@
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cmd_mkdir = mkdir -p $(INSTALL_HDR_PATH)/$@
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quiet_cmd_remove = REMOVE $(_dst)/$@
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cmd_remove = rm -f $(INSTALL_HDR_PATH)/$(_dst)/$@
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quiet_cmd_gen = GEN $(_dst)/$@
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quiet_cmd_mkdir = MKDIR $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
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cmd_mkdir = mkdir -p $@
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quiet_cmd_gen = GEN $(patsubst $(INSTALL_HDR_PATH)/%,%,$@)
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cmd_gen = \
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STUBDEF=__ASM_STUB_`echo $@ | tr a-z. A-Z_`; \
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FNAME=$(patsubst $(INSTALL_HDR_PATH)/$(_dst)/%,%,$@) \
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STUBDEF=__ASM_STUB_`echo $$FNAME | tr a-z. A-Z_`; \
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(echo "/* File autogenerated by 'make headers_install' */" ; \
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echo "\#ifndef $$STUBDEF" ; \
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echo "\#define $$STUBDEF" ; \
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echo "\# if $(ARCHDEF)" ; \
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if [ -r $(INSTALL_HDR_PATH)/include/$(archasm)/$@ ]; then \
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echo "\# include <$(archasm)/$@>" ; \
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if [ -r $(subst /$(_dst)/,/include/$(archasm)/,$@) ]; then \
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echo "\# include <$(archasm)/$$FNAME>" ; \
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else \
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echo "\# error $(archasm)/$@ does not exist in" \
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echo "\# error $(archasm)/$$FNAME does not exist in" \
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"the $(ARCH) architecture" ; \
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fi ; \
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echo "\# elif $(ALTARCHDEF)" ; \
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if [ -r $(INSTALL_HDR_PATH)/include/$(altarchasm)/$@ ]; then \
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echo "\# include <$(altarchasm)/$@>" ; \
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if [ -r $(subst /$(_dst)/,/include/$(altarchasm)/,$@) ]; then \
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echo "\# include <$(altarchasm)/$$FNAME>" ; \
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else \
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echo "\# error $(altarchasm)/$@ does not exist in" \
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echo "\# error $(altarchasm)/$$FNAME does not exist in" \
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"the $(ALTARCH) architecture" ; \
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fi ; \
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echo "\# else" ; \
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@ -111,37 +132,49 @@ echo "\# warning This machine appears to be" \
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"neither $(ARCH) nor $(ALTARCH)." ; \
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echo "\# endif" ; \
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echo "\#endif /* $$STUBDEF */" ; \
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) > $(INSTALL_HDR_PATH)/$(_dst)/$@
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) > $@
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__headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
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.PHONY: $(header-y) $(unifdef-y) $(subdir-y)
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.PHONY: __headersinst __headerscheck
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ifdef HDRCHECK
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# Rules for checking headers
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$(objhdr-y) $(header-y) $(unifdef-y):
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__headerscheck: $(subdir-y) $(check-y)
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@true
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$(check-y) : $(INSTALL_HDR_PATH)/$(_dst)/.check.%.h : $(INSTALL_HDR_PATH)/$(_dst)/%.h
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$(call cmd,check)
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# Other dependencies for $(check-y)
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-include /dev/null $(check-y)
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# ... but leave $(check-y) as .PHONY for now until those deps are actually correct.
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.PHONY: $(check-y)
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else
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# Rules for installing headers
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__headersinst: $(subdir-y) $(header-y) $(unifdef-y) $(altarch-y) $(objhdr-y)
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@true
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$(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): $(_dst)
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$(objhdr-y) $(subdir-y) $(header-y) $(unifdef-y): | $(INSTALL_HDR_PATH)/$(_dst) $(unwanted)
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.PHONY: $(_dst)
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$(_dst):
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$(INSTALL_HDR_PATH)/$(_dst):
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$(call cmd,mkdir)
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.PHONY: $(unwanted)
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$(unwanted):
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$(call cmd,remove)
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ifdef GENASM
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$(objhdr-y) $(header-y) $(unifdef-y):
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$(objhdr-y) $(header-y) $(unifdef-y): $(KBUILDFILES)
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$(call cmd,gen)
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else
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$(objhdr-y):
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$(objhdr-y) : $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
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$(call cmd,o_hdr_install)
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$(header-y):
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$(header-y) : $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
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$(call cmd,headers_install)
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$(unifdef-y):
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$(unifdef-y) : $(INSTALL_HDR_PATH)/$(_dst)/%.h: $(srctree)/$(obj)/%.h $(KBUILDFILES)
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$(call cmd,unifdef)
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endif
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endif
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@ -153,8 +186,9 @@ hdrinst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
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# for their existence.
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altarch-dir: $(subdir-y) $(header-y) $(unifdef-y) $(objhdr-y)
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$(Q)$(MAKE) $(hdrinst)=include/asm-$(ALTARCH) dst=include/asm-$(ALTARCH)
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$(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm
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$(Q)$(MAKE) $(hdrinst)=include/asm dst=include/asm$(BIASMDIR)
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# Recursion
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.PHONY: $(subdir-y)
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$(subdir-y):
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$(Q)$(MAKE) $(hdrinst)=$(obj)/$@ dst=$(_dst)/$@ rel=../$(rel)
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@ -6,3 +6,5 @@ for FILE in `grep '^[ \t]*#[ \t]*include[ \t]*<' $2 | cut -f2 -d\< | cut -f1 -d\
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exit 1
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fi
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done
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# FIXME: List dependencies into $3
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touch $3
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