| # ========================================================================== |
| # Installing headers |
| # |
| # header-y - list files to be installed. They are preprocessed |
| # to remove __KERNEL__ section of the file |
| # genhdr-y - Same as header-y but in a generated/ directory |
| # |
| # ========================================================================== |
| |
| # generated header directory |
| gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj))) |
| |
| kbuild-file := $(srctree)/$(obj)/Kbuild |
| include $(kbuild-file) |
| |
| # called may set destination dir (when installing to asm/) |
| _dst := $(if $(dst),$(dst),$(obj)) |
| |
| old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild |
| ifneq ($(wildcard $(old-kbuild-file)),) |
| include $(old-kbuild-file) |
| endif |
| |
| include scripts/Kbuild.include |
| |
| installdir := $(INSTALL_HDR_PATH)/$(subst uapi/,,$(_dst)) |
| |
| header-y := $(sort $(header-y)) |
| subdirs := $(patsubst %/,%,$(filter %/, $(header-y))) |
| header-y := $(filter-out %/, $(header-y)) |
| |
| # 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 |
| wrapper-files := $(filter $(header-y), $(generic-y)) |
| |
| srcdir := $(srctree)/$(obj) |
| gendir := $(objtree)/$(gen) |
| |
| # all headers files for this dir |
| header-y := $(filter-out $(generic-y), $(header-y)) |
| all-files := $(header-y) $(genhdr-y) $(wrapper-files) |
| output-files := $(addprefix $(installdir)/, $(all-files)) |
| |
| # Check that all expected files exist |
| $(foreach hdr, $(header-y), \ |
| $(if $(wildcard $(srcdir)/$(hdr)),, \ |
| $(error Missing UAPI file $(srcdir)/$(hdr)) \ |
| )) |
| $(foreach hdr, $(genhdr-y), \ |
| $(if $(wildcard $(gendir)/$(hdr)),, \ |
| $(error Missing generated UAPI file $(gendir)/$(hdr)) \ |
| )) |
| |
| # 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-y); \ |
| $(CONFIG_SHELL) $< $(installdir) $(gendir) $(genhdr-y); \ |
| 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 $@ |
| |
| PHONY += __headersinst __headerscheck |
| |
| ifndef HDRCHECK |
| # Rules for installing headers |
| __headersinst: $(subdirs) $(install-file) |
| @: |
| |
| targets += $(install-file) |
| $(install-file): scripts/headers_install.sh \ |
| $(addprefix $(srcdir)/,$(header-y)) \ |
| $(addprefix $(gendir)/,$(genhdr-y)) 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 |
| .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: ; |