1 # ==========================================================================
4 # All headers under include/uapi, include/generated/uapi,
5 # arch/<arch>/include/uapi and arch/<arch>/include/generated/uapi are
7 # They are preprocessed to remove __KERNEL__ section of the file.
9 # ==========================================================================
14 include scripts/Kbuild.include
16 srcdir := $(srctree)/$(obj)
18 # When make is run under a fakechroot environment, the function
19 # $(wildcard $(srcdir)/*/.) doesn't only return directories, but also regular
20 # files. So, we are using a combination of sort/dir/wildcard which works
22 subdirs := $(patsubst $(srcdir)/%/,%,\
23 $(filter-out $(srcdir)/,\
24 $(sort $(dir $(wildcard $(srcdir)/*/)))))
31 $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(dst)/$@
33 # Skip header install/check for include/uapi and arch/$(hdr-arch)/include/uapi.
34 # We have only sub-directories there.
35 skip-inst := $(if $(filter %/uapi,$(obj)),1)
39 # Kbuild file is optional
40 kbuild-file := $(srctree)/$(obj)/Kbuild
41 -include $(kbuild-file)
43 installdir := $(INSTALL_HDR_PATH)/$(dst)
44 gendir := $(objtree)/$(subst include/,include/generated/,$(obj))
45 header-files := $(notdir $(wildcard $(srcdir)/*.h))
46 header-files += $(notdir $(wildcard $(srcdir)/*.agh))
47 header-files := $(filter-out $(no-export-headers), $(header-files))
48 genhdr-files := $(notdir $(wildcard $(gendir)/*.h))
49 genhdr-files := $(filter-out $(header-files), $(genhdr-files))
51 # files used to track state of install/check
52 install-file := $(installdir)/.install
53 check-file := $(installdir)/.check
55 # all headers files for this dir
56 all-files := $(header-files) $(genhdr-files)
57 output-files := $(addprefix $(installdir)/, $(all-files))
59 ifneq ($(mandatory-y),)
60 missing := $(filter-out $(all-files),$(mandatory-y))
62 $(error Some mandatory headers ($(missing)) are missing in $(obj))
66 # Work out what needs to be removed
67 oldheaders := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h))
68 unwanted := $(filter-out $(all-files),$(oldheaders))
70 # Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
71 unwanted-file := $(addprefix $(installdir)/, $(unwanted))
73 printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@))
75 quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\
76 file$(if $(word 2, $(all-files)),s))
78 $(CONFIG_SHELL) $< $(installdir) $(srcdir) $(header-files); \
79 $(CONFIG_SHELL) $< $(installdir) $(gendir) $(genhdr-files); \
82 quiet_cmd_remove = REMOVE $(unwanted)
83 cmd_remove = rm -f $(unwanted-file)
85 quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files)
86 # Headers list can be pretty long, xargs helps to avoid
87 # the "Argument list too long" error.
88 cmd_check = for f in $(all-files); do \
89 echo "$(installdir)/$${f}"; done \
91 $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
95 # Rules for installing headers
96 __headers: $(install-file)
99 targets += $(install-file)
100 $(install-file): scripts/headers_install.sh \
101 $(addprefix $(srcdir)/,$(header-files)) \
102 $(addprefix $(gendir)/,$(genhdr-files)) FORCE
103 $(if $(unwanted),$(call cmd,remove),)
104 $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
105 $(call if_changed,install)
108 __headers: $(check-file)
111 targets += $(check-file)
112 $(check-file): scripts/headers_check.pl $(output-files) FORCE
113 $(call if_changed,check)
117 targets := $(wildcard $(sort $(targets)))
118 cmd_files := $(wildcard \
119 $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
121 ifneq ($(cmd_files),)