1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 28d730cfbSDavid Woodhouse# ========================================================================== 38d730cfbSDavid Woodhouse# Installing headers 48d730cfbSDavid Woodhouse# 5fcc8487dSNicolas Dichtel# All headers under include/uapi, include/generated/uapi, 661562f98SNicolas Dichtel# arch/<arch>/include/uapi and arch/<arch>/include/generated/uapi are 7fcc8487dSNicolas Dichtel# exported. 8fcc8487dSNicolas Dichtel# They are preprocessed to remove __KERNEL__ section of the file. 98d730cfbSDavid Woodhouse# 108d730cfbSDavid Woodhouse# ========================================================================== 118d730cfbSDavid Woodhouse 1205d8cba4SMasahiro YamadaPHONY := __headers 1305d8cba4SMasahiro Yamada__headers: 1405d8cba4SMasahiro Yamada 15*3204a7fbSMasahiro Yamadainclude $(srctree)/scripts/Kbuild.include 1605d8cba4SMasahiro Yamada 17d5470d14SMasahiro Yamadasrc := $(srctree)/$(obj) 18d5470d14SMasahiro Yamadagen := $(objtree)/$(subst include/,include/generated/,$(obj)) 19d5470d14SMasahiro Yamadadst := usr/include 202f263d14SRichard Genoud 21d5470d14SMasahiro Yamada-include $(src)/Kbuild 222f263d14SRichard Genoud 237ff4f080SMasahiro Yamada# $(filter %/, ...) is a workaround for GNU Make <= 4.2.1, where 247ff4f080SMasahiro Yamada# $(wildcard $(src)/*/) contains not only directories but also regular files. 257ff4f080SMasahiro Yamadasrc-subdirs := $(patsubst $(src)/%/,%,$(filter %/, $(wildcard $(src)/*/))) 267ff4f080SMasahiro Yamadagen-subdirs := $(patsubst $(gen)/%/,%,$(filter %/, $(wildcard $(gen)/*/))) 27d5470d14SMasahiro Yamadaall-subdirs := $(sort $(src-subdirs) $(gen-subdirs)) 2805d8cba4SMasahiro Yamada 29d5470d14SMasahiro Yamadasrc-headers := $(if $(src-subdirs), $(shell cd $(src) && find $(src-subdirs) -name '*.h')) 30d5470d14SMasahiro Yamadasrc-headers := $(filter-out $(no-export-headers), $(src-headers)) 31d5470d14SMasahiro Yamadagen-headers := $(if $(gen-subdirs), $(shell cd $(gen) && find $(gen-subdirs) -name '*.h')) 32d5470d14SMasahiro Yamadagen-headers := $(filter-out $(no-export-headers), $(gen-headers)) 3305d8cba4SMasahiro Yamada 34d5470d14SMasahiro Yamada# If the same header is exported from source and generated directories, 35d5470d14SMasahiro Yamada# the former takes precedence, but this should be warned. 36d5470d14SMasahiro Yamadaduplicated := $(filter $(gen-headers), $(src-headers)) 37d5470d14SMasahiro Yamada$(if $(duplicated), $(warning duplicated header export: $(duplicated))) 3805d8cba4SMasahiro Yamada 39d5470d14SMasahiro Yamadagen-headers := $(filter-out $(duplicated), $(gen-headers)) 4005d8cba4SMasahiro Yamada 41d5470d14SMasahiro Yamada# Add dst path prefix 42d5470d14SMasahiro Yamadaall-subdirs := $(addprefix $(dst)/, $(all-subdirs)) 43d5470d14SMasahiro Yamadasrc-headers := $(addprefix $(dst)/, $(src-headers)) 44d5470d14SMasahiro Yamadagen-headers := $(addprefix $(dst)/, $(gen-headers)) 45d5470d14SMasahiro Yamadaall-headers := $(src-headers) $(gen-headers) 4610b63956SDavid Howells 47de789125SDavid Woodhouse# Work out what needs to be removed 48d5470d14SMasahiro Yamadaold-subdirs := $(wildcard $(all-subdirs)) 49d5470d14SMasahiro Yamadaold-headers := $(if $(old-subdirs),$(shell find $(old-subdirs) -name '*.h')) 50d5470d14SMasahiro Yamadaunwanted := $(filter-out $(all-headers), $(old-headers)) 51de789125SDavid Woodhouse 52d5470d14SMasahiro Yamada# Create directories 53d5470d14SMasahiro Yamadaexisting-dirs := $(sort $(dir $(old-headers))) 54d5470d14SMasahiro Yamadawanted-dirs := $(sort $(dir $(all-headers))) 55d5470d14SMasahiro Yamadanew-dirs := $(filter-out $(existing-dirs), $(wanted-dirs)) 56d5470d14SMasahiro Yamada$(if $(new-dirs), $(shell mkdir -p $(new-dirs))) 57de789125SDavid Woodhouse 58d5470d14SMasahiro Yamada# Rules 59d5470d14SMasahiro Yamadaquiet_cmd_install = HDRINST $@ 60555187a8SMasahiro Yamada cmd_install = $(CONFIG_SHELL) $(srctree)/scripts/headers_install.sh $< $@ 61d5470d14SMasahiro Yamada 62d5470d14SMasahiro Yamada$(src-headers): $(dst)/%.h: $(src)/%.h $(srctree)/scripts/headers_install.sh FORCE 637712401aSSam Ravnborg $(call if_changed,install) 64de789125SDavid Woodhouse 65d5470d14SMasahiro Yamada$(gen-headers): $(dst)/%.h: $(gen)/%.h $(srctree)/scripts/headers_install.sh FORCE 66d5470d14SMasahiro Yamada $(call if_changed,install) 67d5470d14SMasahiro Yamada 68d5470d14SMasahiro Yamadaquiet_cmd_remove = REMOVE $(unwanted) 69d5470d14SMasahiro Yamada cmd_remove = rm -f $(unwanted) 70d5470d14SMasahiro Yamada 71d5470d14SMasahiro Yamada__headers: $(all-headers) 72d5470d14SMasahiro Yamadaifneq ($(unwanted),) 73d5470d14SMasahiro Yamada $(call cmd,remove) 74d5470d14SMasahiro Yamadaendif 757712401aSSam Ravnborg @: 768d730cfbSDavid Woodhouse 77d5470d14SMasahiro Yamadaexisting-headers := $(filter $(old-headers), $(all-headers)) 78d5470d14SMasahiro Yamada 79d5470d14SMasahiro Yamada-include $(foreach f,$(existing-headers),$(dir $(f)).$(notdir $(f)).cmd) 80d5470d14SMasahiro Yamada 817712401aSSam RavnborgPHONY += FORCE 82d5470d14SMasahiro YamadaFORCE: 83e474ed45SMasahiro Yamada 84e474ed45SMasahiro Yamada.PHONY: $(PHONY) 85