| # ========================================================================== |
| # Installing headers |
| # |
| # All headers under include/uapi, include/generated/uapi, |
| # arch/<arch>/include/uapi and arch/<arch>/include/generated/uapi are |
| # exported. |
| # They are preprocessed to remove __KERNEL__ section of the file. |
| # |
| # ========================================================================== |
| |
| PHONY := __headers |
| __headers: |
| |
| include scripts/Kbuild.include |
| |
| srcdir := $(srctree)/$(obj) |
| |
| # When make is run under a fakechroot environment, the function |
| # $(wildcard $(srcdir)/*/.) doesn't only return directories, but also regular |
| # files. So, we are using a combination of sort/dir/wildcard which works |
| # with fakechroot. |
| subdirs := $(patsubst $(srcdir)/%/,%,\ |
| $(filter-out $(srcdir)/,\ |
| $(sort $(dir $(wildcard $(srcdir)/*/))))) |
| |
| # Recursion |
| __headers: $(subdirs) |
| |
| .PHONY: $(subdirs) |
| $(subdirs): |
| $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(dst)/$@ |
| |
| # Skip header install/check for include/uapi and arch/$(hdr-arch)/include/uapi. |
| # We have only sub-directories there. |
| skip-inst := $(if $(filter %/uapi,$(obj)),1) |
| |
| ifeq ($(skip-inst),) |
| |
| # Kbuild file is optional |
| kbuild-file := $(srctree)/$(obj)/Kbuild |
| -include $(kbuild-file) |
| |
| old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild |
| ifneq ($(wildcard $(old-kbuild-file)),) |
| include $(old-kbuild-file) |
| endif |
| |
| installdir := $(INSTALL_HDR_PATH)/$(dst) |
| gendir := $(objtree)/$(subst include/,include/generated/,$(obj)) |
| header-files := $(notdir $(wildcard $(srcdir)/*.h)) |
| header-files += $(notdir $(wildcard $(srcdir)/*.agh)) |
| header-files := $(filter-out $(no-export-headers), $(header-files)) |
| genhdr-files := $(notdir $(wildcard $(gendir)/*.h)) |
| genhdr-files := $(filter-out $(header-files), $(genhdr-files)) |
| |
| # files used to track state of install/check |
| install-file := $(installdir)/.install |
| check-file := $(installdir)/.check |
| |
| # generic-y list all files an architecture uses from asm-generic |
| # Use this to build a list of headers which require a wrapper |
| generic-files := $(notdir $(wildcard $(srctree)/include/uapi/asm-generic/*.h)) |
| wrapper-files := $(filter $(generic-files), $(generic-y)) |
| wrapper-files := $(filter-out $(header-files), $(wrapper-files)) |
| |
| # all headers files for this dir |
| all-files := $(header-files) $(genhdr-files) $(wrapper-files) |
| output-files := $(addprefix $(installdir)/, $(all-files)) |
| |
| ifneq ($(mandatory-y),) |
| missing := $(filter-out $(all-files),$(mandatory-y)) |
| ifneq ($(missing),) |
| $(error Some mandatory headers ($(missing)) are missing in $(obj)) |
| endif |
| endif |
| |
| # Work out what needs to be removed |
| oldheaders := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h)) |
| unwanted := $(filter-out $(all-files),$(oldheaders)) |
| |
| # Prefix unwanted with full paths to $(INSTALL_HDR_PATH) |
| unwanted-file := $(addprefix $(installdir)/, $(unwanted)) |
| |
| printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@)) |
| |
| quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\ |
| file$(if $(word 2, $(all-files)),s)) |
| cmd_install = \ |
| $(CONFIG_SHELL) $< $(installdir) $(srcdir) $(header-files); \ |
| $(CONFIG_SHELL) $< $(installdir) $(gendir) $(genhdr-files); \ |
| for F in $(wrapper-files); do \ |
| echo "\#include <asm-generic/$$F>" > $(installdir)/$$F; \ |
| done; \ |
| 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 $(all-files); do \ |
| echo "$(installdir)/$${f}"; done \ |
| | xargs \ |
| $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \ |
| touch $@ |
| |
| ifndef HDRCHECK |
| # Rules for installing headers |
| __headers: $(install-file) |
| @: |
| |
| targets += $(install-file) |
| $(install-file): scripts/headers_install.sh \ |
| $(addprefix $(srcdir)/,$(header-files)) \ |
| $(addprefix $(gendir)/,$(genhdr-files)) FORCE |
| $(if $(unwanted),$(call cmd,remove),) |
| $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@))) |
| $(call if_changed,install) |
| |
| else |
| __headers: $(check-file) |
| @: |
| |
| targets += $(check-file) |
| $(check-file): scripts/headers_check.pl $(output-files) FORCE |
| $(call if_changed,check) |
| |
| endif |
| |
| targets := $(wildcard $(sort $(targets))) |
| cmd_files := $(wildcard \ |
| $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
| |
| ifneq ($(cmd_files),) |
| include $(cmd_files) |
| endif |
| |
| endif # skip-inst |
| |
| .PHONY: $(PHONY) |
| PHONY += FORCE |
| FORCE: ; |