Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
8d730cfb DW |
2 | # ========================================================================== |
3 | # Installing headers | |
4 | # | |
fcc8487d | 5 | # All headers under include/uapi, include/generated/uapi, |
61562f98 | 6 | # arch/<arch>/include/uapi and arch/<arch>/include/generated/uapi are |
fcc8487d ND |
7 | # exported. |
8 | # They are preprocessed to remove __KERNEL__ section of the file. | |
8d730cfb DW |
9 | # |
10 | # ========================================================================== | |
11 | ||
05d8cba4 MY |
12 | PHONY := __headers |
13 | __headers: | |
14 | ||
15 | include scripts/Kbuild.include | |
16 | ||
d5470d14 MY |
17 | src := $(srctree)/$(obj) |
18 | gen := $(objtree)/$(subst include/,include/generated/,$(obj)) | |
19 | dst := usr/include | |
2f263d14 | 20 | |
d5470d14 | 21 | -include $(src)/Kbuild |
2f263d14 | 22 | |
d5470d14 MY |
23 | src-subdirs := $(patsubst $(src)/%/,%,$(wildcard $(src)/*/)) |
24 | gen-subdirs := $(patsubst $(gen)/%/,%,$(wildcard $(gen)/*/)) | |
25 | all-subdirs := $(sort $(src-subdirs) $(gen-subdirs)) | |
05d8cba4 | 26 | |
d5470d14 MY |
27 | src-headers := $(if $(src-subdirs), $(shell cd $(src) && find $(src-subdirs) -name '*.h')) |
28 | src-headers := $(filter-out $(no-export-headers), $(src-headers)) | |
29 | gen-headers := $(if $(gen-subdirs), $(shell cd $(gen) && find $(gen-subdirs) -name '*.h')) | |
30 | gen-headers := $(filter-out $(no-export-headers), $(gen-headers)) | |
05d8cba4 | 31 | |
d5470d14 MY |
32 | # If the same header is exported from source and generated directories, |
33 | # the former takes precedence, but this should be warned. | |
34 | duplicated := $(filter $(gen-headers), $(src-headers)) | |
35 | $(if $(duplicated), $(warning duplicated header export: $(duplicated))) | |
05d8cba4 | 36 | |
d5470d14 | 37 | gen-headers := $(filter-out $(duplicated), $(gen-headers)) |
05d8cba4 | 38 | |
d5470d14 MY |
39 | # Add dst path prefix |
40 | all-subdirs := $(addprefix $(dst)/, $(all-subdirs)) | |
41 | src-headers := $(addprefix $(dst)/, $(src-headers)) | |
42 | gen-headers := $(addprefix $(dst)/, $(gen-headers)) | |
43 | all-headers := $(src-headers) $(gen-headers) | |
8d730cfb | 44 | |
d5470d14 MY |
45 | # Work out what needs to be removed |
46 | old-subdirs := $(wildcard $(all-subdirs)) | |
47 | old-headers := $(if $(old-subdirs),$(shell find $(old-subdirs) -name '*.h')) | |
48 | unwanted := $(filter-out $(all-headers), $(old-headers)) | |
de789125 | 49 | |
d5470d14 MY |
50 | # Create directories |
51 | existing-dirs := $(sort $(dir $(old-headers))) | |
52 | wanted-dirs := $(sort $(dir $(all-headers))) | |
53 | new-dirs := $(filter-out $(existing-dirs), $(wanted-dirs)) | |
54 | $(if $(new-dirs), $(shell mkdir -p $(new-dirs))) | |
de789125 | 55 | |
d5470d14 | 56 | # Rules |
10b63956 | 57 | |
d5470d14 | 58 | ifndef HDRCHECK |
8d730cfb | 59 | |
d5470d14 | 60 | quiet_cmd_install = HDRINST $@ |
555187a8 | 61 | cmd_install = $(CONFIG_SHELL) $(srctree)/scripts/headers_install.sh $< $@ |
de789125 | 62 | |
d5470d14 MY |
63 | $(src-headers): $(dst)/%.h: $(src)/%.h $(srctree)/scripts/headers_install.sh FORCE |
64 | $(call if_changed,install) | |
68475359 | 65 | |
d5470d14 MY |
66 | $(gen-headers): $(dst)/%.h: $(gen)/%.h $(srctree)/scripts/headers_install.sh FORCE |
67 | $(call if_changed,install) | |
8d730cfb | 68 | |
7712401a | 69 | quiet_cmd_remove = REMOVE $(unwanted) |
d5470d14 | 70 | cmd_remove = rm -f $(unwanted) |
de789125 | 71 | |
d5470d14 MY |
72 | __headers: $(all-headers) |
73 | ifneq ($(unwanted),) | |
74 | $(call cmd,remove) | |
75 | endif | |
7712401a | 76 | @: |
de789125 | 77 | |
d5470d14 MY |
78 | existing-headers := $(filter $(old-headers), $(all-headers)) |
79 | ||
80 | -include $(foreach f,$(existing-headers),$(dir $(f)).$(notdir $(f)).cmd) | |
de789125 | 81 | |
68475359 | 82 | else |
8d730cfb | 83 | |
d5470d14 MY |
84 | quiet_cmd_check = HDRCHK $< |
85 | cmd_check = $(PERL) $(srctree)/scripts/headers_check.pl $(dst) $(SRCARCH) $<; touch $@ | |
8d730cfb | 86 | |
d5470d14 | 87 | check-files := $(addsuffix .chk, $(all-headers)) |
de789125 | 88 | |
d5470d14 MY |
89 | $(check-files): $(dst)/%.chk : $(dst)/% $(srctree)/scripts/headers_check.pl |
90 | $(call cmd,check) | |
4e420aa9 | 91 | |
d5470d14 MY |
92 | __headers: $(check-files) |
93 | @: | |
8d730cfb | 94 | |
d5470d14 | 95 | endif |
05d8cba4 | 96 | |
7712401a | 97 | PHONY += FORCE |
d5470d14 | 98 | FORCE: |
e474ed45 MY |
99 | |
100 | .PHONY: $(PHONY) |