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
7 # genhdr-y - Same as objhdr-y but in a generated/ directory
9 # ==========================================================================
11 # called may set destination dir (when installing to asm/)
12 _dst := $(if $(dst),$(dst),$(obj))
14 # generated header directory
15 gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
17 kbuild-file := $(srctree)/$(obj)/Kbuild
18 include $(kbuild-file)
20 _dst := $(if $(destination-y),$(destination-y),$(_dst))
22 include scripts/Kbuild.include
24 install := $(INSTALL_HDR_PATH)/$(_dst)
26 header-y := $(sort $(header-y))
27 subdirs := $(patsubst %/,%,$(filter %/, $(header-y)))
28 header-y := $(filter-out %/, $(header-y))
30 # files used to track state of install/check
31 install-file := $(install)/.install
32 check-file := $(install)/.check
34 # generic-y list all files an architecture uses from asm-generic
35 # Use this to build a list of headers which require a wrapper
36 wrapper-files := $(filter $(header-y), $(generic-y))
38 # all headers files for this dir
39 header-y := $(filter-out $(generic-y), $(header-y))
40 all-files := $(header-y) $(objhdr-y) $(genhdr-y) $(wrapper-files)
41 input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
42 $(addprefix $(objtree)/$(obj)/,$(objhdr-y)) \
43 $(addprefix $(objtree)/$(gen)/,$(genhdr-y))
44 output-files := $(addprefix $(install)/, $(all-files))
46 # Work out what needs to be removed
47 oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
48 unwanted := $(filter-out $(all-files),$(oldheaders))
50 # Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
51 unwanted-file := $(addprefix $(install)/, $(unwanted))
53 printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
55 quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
56 file$(if $(word 2, $(all-files)),s))
58 $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
59 $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \
60 $(PERL) $< $(objtree)/$(gen) $(install) $(SRCARCH) $(genhdr-y); \
61 for F in $(wrapper-files); do \
62 echo "\#include <asm-generic/$$F>" > $(install)/$$F; \
66 quiet_cmd_remove = REMOVE $(unwanted)
67 cmd_remove = rm -f $(unwanted-file)
69 quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files)
70 # Headers list can be pretty long, xargs helps to avoid
71 # the "Argument list too long" error.
72 cmd_check = for f in $(all-files); do \
73 echo "$(install)/$${f}"; done \
75 $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
78 PHONY += __headersinst __headerscheck
81 # Rules for installing headers
82 __headersinst: $(subdirs) $(install-file)
85 targets += $(install-file)
86 $(install-file): scripts/headers_install.pl $(input-files) FORCE
87 $(if $(unwanted),$(call cmd,remove),)
88 $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
89 $(call if_changed,install)
92 __headerscheck: $(subdirs) $(check-file)
95 targets += $(check-file)
96 $(check-file): scripts/headers_check.pl $(output-files) FORCE
97 $(call if_changed,check)
102 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
105 $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
107 targets := $(wildcard $(sort $(targets)))
108 cmd_files := $(wildcard \
109 $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
111 ifneq ($(cmd_files),)