1 # ==========================================================================
4 # header-y - list files to be installed. They are preprocessed
5 # to remove __KERNEL__ section of the file
6 # objhdr-y - Same as header-y but for generated files
8 # ==========================================================================
10 # called may set destination dir (when installing to asm/)
11 _dst := $(if $(dst),$(dst),$(obj))
13 kbuild-file := $(srctree)/$(obj)/Kbuild
14 include $(kbuild-file)
16 _dst := $(if $(destination-y),$(destination-y),$(_dst))
18 include scripts/Kbuild.include
20 install := $(INSTALL_HDR_PATH)/$(_dst)
22 header-y := $(sort $(header-y))
23 subdirs := $(patsubst %/,%,$(filter %/, $(header-y)))
24 header-y := $(filter-out %/, $(header-y))
26 # files used to track state of install/check
27 install-file := $(install)/.install
28 check-file := $(install)/.check
30 # all headers files for this dir
31 all-files := $(header-y) $(objhdr-y)
32 input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
33 $(addprefix $(objtree)/$(obj)/,$(objhdr-y))
34 output-files := $(addprefix $(install)/, $(all-files))
36 # Work out what needs to be removed
37 oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
38 unwanted := $(filter-out $(all-files),$(oldheaders))
40 # Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
41 unwanted-file := $(addprefix $(install)/, $(unwanted))
43 printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
45 quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
46 file$(if $(word 2, $(all-files)),s))
48 $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
49 $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \
52 quiet_cmd_remove = REMOVE $(unwanted)
53 cmd_remove = rm -f $(unwanted-file)
55 quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files)
56 # Headers list can be pretty long, xargs helps to avoid
57 # the "Argument list too long" error.
58 cmd_check = for f in $(all-files); do \
59 echo "$(install)/$${f}"; done \
61 $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
64 PHONY += __headersinst __headerscheck
67 # Rules for installing headers
68 __headersinst: $(subdirs) $(install-file)
71 targets += $(install-file)
72 $(install-file): scripts/headers_install.pl $(input-files) FORCE
73 $(if $(unwanted),$(call cmd,remove),)
74 $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
75 $(call if_changed,install)
78 __headerscheck: $(subdirs) $(check-file)
81 targets += $(check-file)
82 $(check-file): scripts/headers_check.pl $(output-files) FORCE
83 $(call if_changed,check)
88 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
91 $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
93 targets := $(wildcard $(sort $(targets)))
94 cmd_files := $(wildcard \
95 $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))