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Linus Torvalds1da177e2005-04-16 15:20:36 -07001# ==========================================================================
2# Cleaning up
3# ==========================================================================
4
5src := $(obj)
6
Paul Smith4f193362006-03-05 17:14:10 -05007PHONY := __clean
Linus Torvalds1da177e2005-04-16 15:20:36 -07008__clean:
9
Masahiro Yamada371fdc72014-11-26 19:31:13 +090010include scripts/Kbuild.include
Sam Ravnborg2315c6e2005-07-25 22:41:12 +000011
Sam Ravnborg2a691472005-07-25 20:26:04 +000012# The filename Kbuild has precedence over Makefile
Sam Ravnborgdb8c1a72005-07-27 22:11:01 +020013kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
14include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
16# Figure out what we need to build from the various variables
17# ==========================================================================
18
19__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
20subdir-y += $(__subdir-y)
21__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
22subdir-m += $(__subdir-m)
Linus Torvalds1da177e2005-04-16 15:20:36 -070023__subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
24subdir- += $(__subdir-)
25
26# Subdirectories we need to descend into
27
28subdir-ym := $(sort $(subdir-y) $(subdir-m))
Masahiro Yamadaa4954fd2014-09-09 19:26:21 +090029subdir-ymn := $(sort $(subdir-ym) $(subdir-))
Linus Torvalds1da177e2005-04-16 15:20:36 -070030
31# Add subdir path
32
33subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
34
Robert P. J. Day3156fd02008-02-18 04:48:20 -050035# build a list of files to remove, usually relative to the current
Linus Torvalds1da177e2005-04-16 15:20:36 -070036# directory
37
Masahiro Yamada9d5db892014-06-06 10:43:55 +090038__clean-files := $(extra-y) $(extra-m) $(extra-) \
39 $(always) $(targets) $(clean-files) \
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 $(host-progs) \
Emese Revfy24403872016-05-24 00:08:25 +020041 $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
42 $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
43 $(hostcxxlibs-y) $(hostcxxlibs-m)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Michal Marekef8ff892010-03-09 16:00:20 +010045__clean-files := $(filter-out $(no-clean-files), $(__clean-files))
46
Michal Mareka16c5f92014-12-31 16:29:35 +010047# clean-files is given relative to the current directory, unless it
48# starts with $(objtree)/ (which means "./", so do not add "./" unless
49# you want to delete a file from the toplevel object directory).
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
51__clean-files := $(wildcard \
Michal Mareka16c5f92014-12-31 16:29:35 +010052 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
53 $(filter $(objtree)/%, $(__clean-files)))
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
Michal Mareka16c5f92014-12-31 16:29:35 +010055# same as clean-files
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57__clean-dirs := $(wildcard \
Michal Mareka16c5f92014-12-31 16:29:35 +010058 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
59 $(filter $(objtree)/%, $(clean-dirs)))
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
61# ==========================================================================
62
63quiet_cmd_clean = CLEAN $(obj)
64 cmd_clean = rm -f $(__clean-files)
65quiet_cmd_cleandir = CLEAN $(__clean-dirs)
66 cmd_cleandir = rm -rf $(__clean-dirs)
67
68
69__clean: $(subdir-ymn)
70ifneq ($(strip $(__clean-files)),)
71 +$(call cmd,clean)
72endif
73ifneq ($(strip $(__clean-dirs)),)
74 +$(call cmd,cleandir)
75endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 @:
77
78
79# ===========================================================================
80# Generic stuff
81# ===========================================================================
82
83# Descending
84# ---------------------------------------------------------------------------
85
Paul Smith4f193362006-03-05 17:14:10 -050086PHONY += $(subdir-ymn)
Linus Torvalds1da177e2005-04-16 15:20:36 -070087$(subdir-ymn):
88 $(Q)$(MAKE) $(clean)=$@
89
Paul Smith4f193362006-03-05 17:14:10 -050090# Declare the contents of the .PHONY variable as phony. We keep that
91# information in a variable se we can use it in if_changed and friends.
92
93.PHONY: $(PHONY)