1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 # ============================================ 2 # ==========================================================================
3 # Installing headers 3 # Installing headers
4 # 4 #
5 # All headers under include/uapi, include/gene 5 # All headers under include/uapi, include/generated/uapi,
6 # arch/<arch>/include/uapi and arch/<arch>/inc 6 # arch/<arch>/include/uapi and arch/<arch>/include/generated/uapi are
7 # exported. 7 # exported.
8 # They are preprocessed to remove __KERNEL__ s 8 # They are preprocessed to remove __KERNEL__ section of the file.
9 # 9 #
10 # ============================================ 10 # ==========================================================================
11 11
12 PHONY := __headers 12 PHONY := __headers
13 __headers: 13 __headers:
14 14
15 include $(srctree)/scripts/Kbuild.include 15 include $(srctree)/scripts/Kbuild.include
16 16
17 src := $(srctree)/$(obj) 17 src := $(srctree)/$(obj)
18 gen := $(objtree)/$(subst include/,include/gen 18 gen := $(objtree)/$(subst include/,include/generated/,$(obj))
19 dst := usr/include 19 dst := usr/include
20 20
21 -include $(src)/Kbuild 21 -include $(src)/Kbuild
22 22
23 # $(filter %/, ...) is a workaround for GNU Ma 23 # $(filter %/, ...) is a workaround for GNU Make <= 4.2.1, where
24 # $(wildcard $(src)/*/) contains not only dire 24 # $(wildcard $(src)/*/) contains not only directories but also regular files.
25 src-subdirs := $(patsubst $(src)/%/,%,$(filter 25 src-subdirs := $(patsubst $(src)/%/,%,$(filter %/, $(wildcard $(src)/*/)))
26 gen-subdirs := $(patsubst $(gen)/%/,%,$(filter 26 gen-subdirs := $(patsubst $(gen)/%/,%,$(filter %/, $(wildcard $(gen)/*/)))
27 all-subdirs := $(sort $(src-subdirs) $(gen-sub 27 all-subdirs := $(sort $(src-subdirs) $(gen-subdirs))
28 28
29 src-headers := $(if $(src-subdirs), $(shell cd 29 src-headers := $(if $(src-subdirs), $(shell cd $(src) && find $(src-subdirs) -name '*.h'))
30 src-headers := $(filter-out $(no-export-header 30 src-headers := $(filter-out $(no-export-headers), $(src-headers))
31 gen-headers := $(if $(gen-subdirs), $(shell cd 31 gen-headers := $(if $(gen-subdirs), $(shell cd $(gen) && find $(gen-subdirs) -name '*.h'))
32 gen-headers := $(filter-out $(no-export-header 32 gen-headers := $(filter-out $(no-export-headers), $(gen-headers))
33 33
34 # If the same header is exported from source a 34 # If the same header is exported from source and generated directories,
35 # the former takes precedence, but this should 35 # the former takes precedence, but this should be warned.
36 duplicated := $(filter $(gen-headers), $(src-h 36 duplicated := $(filter $(gen-headers), $(src-headers))
37 $(if $(duplicated), $(warning duplicated heade 37 $(if $(duplicated), $(warning duplicated header export: $(duplicated)))
38 38
39 gen-headers := $(filter-out $(duplicated), $(g 39 gen-headers := $(filter-out $(duplicated), $(gen-headers))
40 40
41 # Add dst path prefix 41 # Add dst path prefix
42 all-subdirs := $(addprefix $(dst)/, $(all-subd 42 all-subdirs := $(addprefix $(dst)/, $(all-subdirs))
43 src-headers := $(addprefix $(dst)/, $(src-head 43 src-headers := $(addprefix $(dst)/, $(src-headers))
44 gen-headers := $(addprefix $(dst)/, $(gen-head 44 gen-headers := $(addprefix $(dst)/, $(gen-headers))
45 all-headers := $(src-headers) $(gen-headers) 45 all-headers := $(src-headers) $(gen-headers)
46 46
47 # Work out what needs to be removed 47 # Work out what needs to be removed
48 old-subdirs := $(wildcard $(all-subdirs)) 48 old-subdirs := $(wildcard $(all-subdirs))
49 old-headers := $(if $(old-subdirs),$(shell fin 49 old-headers := $(if $(old-subdirs),$(shell find $(old-subdirs) -name '*.h'))
50 unwanted := $(filter-out $(all-headers), $( 50 unwanted := $(filter-out $(all-headers), $(old-headers))
51 51
52 # Create directories 52 # Create directories
53 existing-dirs := $(sort $(dir $(old-headers))) 53 existing-dirs := $(sort $(dir $(old-headers)))
54 wanted-dirs := $(sort $(dir $(all-headers))) 54 wanted-dirs := $(sort $(dir $(all-headers)))
55 new-dirs := $(filter-out $(existing-dirs) 55 new-dirs := $(filter-out $(existing-dirs), $(wanted-dirs))
56 $(if $(new-dirs), $(shell mkdir -p $(new-dirs) 56 $(if $(new-dirs), $(shell mkdir -p $(new-dirs)))
57 57
58 # Rules 58 # Rules
59 quiet_cmd_install = HDRINST $@ 59 quiet_cmd_install = HDRINST $@
60 cmd_install = $(CONFIG_SHELL) $(srctree) 60 cmd_install = $(CONFIG_SHELL) $(srctree)/scripts/headers_install.sh $< $@
61 61
62 $(src-headers): $(dst)/%.h: $(src)/%.h $(srctr 62 $(src-headers): $(dst)/%.h: $(src)/%.h $(srctree)/scripts/headers_install.sh FORCE
63 $(call if_changed,install) 63 $(call if_changed,install)
64 64
65 $(gen-headers): $(dst)/%.h: $(gen)/%.h $(srctr 65 $(gen-headers): $(dst)/%.h: $(gen)/%.h $(srctree)/scripts/headers_install.sh FORCE
66 $(call if_changed,install) 66 $(call if_changed,install)
67 67
68 quiet_cmd_remove = REMOVE $(unwanted) 68 quiet_cmd_remove = REMOVE $(unwanted)
69 cmd_remove = rm -f $(unwanted) 69 cmd_remove = rm -f $(unwanted)
70 70
71 __headers: $(all-headers) 71 __headers: $(all-headers)
72 ifneq ($(unwanted),) 72 ifneq ($(unwanted),)
73 $(call cmd,remove) 73 $(call cmd,remove)
74 endif 74 endif
75 @: 75 @:
76 76
77 existing-headers := $(filter $(old-headers), $ 77 existing-headers := $(filter $(old-headers), $(all-headers))
78 78
79 -include $(foreach f,$(existing-headers),$(dir 79 -include $(foreach f,$(existing-headers),$(dir $(f)).$(notdir $(f)).cmd)
80 80
81 PHONY += FORCE 81 PHONY += FORCE
82 FORCE: 82 FORCE:
83 83
84 .PHONY: $(PHONY) 84 .PHONY: $(PHONY)
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