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 # generic-y list all files an architecture uses from asm-generic
31 # Use this to build a list of headers which require a wrapper
32 wrapper-files := $(filter $(header-y), $(generic-y))
34 # all headers files for this dir
35 header-y := $(filter-out $(generic-y), $(header-y))
36 all-files := $(header-y) $(objhdr-y) $(wrapper-files)
37 input-files := $(addprefix $(srctree)/$(obj)/,$(header-y)) \
38 $(addprefix $(objtree)/$(obj)/,$(objhdr-y))
39 output-files := $(addprefix $(install)/, $(all-files))
41 # Work out what needs to be removed
42 oldheaders := $(patsubst $(install)/%,%,$(wildcard $(install)/*.h))
43 unwanted := $(filter-out $(all-files),$(oldheaders))
45 # Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
46 unwanted-file := $(addprefix $(install)/, $(unwanted))
48 printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
50 quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
51 file$(if $(word 2, $(all-files)),s))
53 $(PERL) $< $(srctree)/$(obj) $(install) $(SRCARCH) $(header-y); \
54 $(PERL) $< $(objtree)/$(obj) $(install) $(SRCARCH) $(objhdr-y); \
55 for F in $(wrapper-files); do \
56 echo "\#include <asm-generic/$$F>" > $(install)/$$F; \
60 quiet_cmd_remove = REMOVE $(unwanted)
61 cmd_remove = rm -f $(unwanted-file)
63 quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files)
64 # Headers list can be pretty long, xargs helps to avoid
65 # the "Argument list too long" error.
66 cmd_check = for f in $(all-files); do \
67 echo "$(install)/$${f}"; done \
69 $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
72 PHONY += __headersinst __headerscheck
75 # Rules for installing headers
76 __headersinst: $(subdirs) $(install-file)
79 targets += $(install-file)
80 $(install-file): scripts/headers_install.pl $(input-files) FORCE
81 $(if $(unwanted),$(call cmd,remove),)
82 $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
83 $(call if_changed,install)
86 __headerscheck: $(subdirs) $(check-file)
89 targets += $(check-file)
90 $(check-file): scripts/headers_check.pl $(output-files) FORCE
91 $(call if_changed,check)
96 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
99 $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@
101 targets := $(wildcard $(sort $(targets)))
102 cmd_files := $(wildcard \
103 $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
105 ifneq ($(cmd_files),)