1 # SPDX-License-Identifier: GPL-2.0
2 # ==========================================================================
3 # Cleaning up
4 # ==========================================================================
5 
6 src := $(obj)
7 
8 PHONY := __clean
9 __clean:
10 
11 include $(srctree)/scripts/Kbuild.include
12 
13 # The filename Kbuild has precedence over Makefile
14 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
15 include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
16 
17 # Figure out what we need to build from the various variables
18 # ==========================================================================
19 
20 subdir-ymn := $(sort $(subdir-y) $(subdir-m) $(subdir-) \
21 		$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m) $(obj-))))
22 
23 # Add subdir path
24 
25 subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
26 
27 # build a list of files to remove, usually relative to the current
28 # directory
29 
30 __clean-files	:= \
31 	$(clean-files) $(targets) $(hostprogs) $(userprogs) \
32 	$(extra-y) $(extra-m) $(extra-) \
33 	$(always-y) $(always-m) $(always-) \
34 	$(hostprogs-always-y) $(hostprogs-always-m) $(hostprogs-always-) \
35 	$(userprogs-always-y) $(userprogs-always-m) $(userprogs-always-)
36 
37 __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
38 
39 # clean-files is given relative to the current directory, unless it
40 # starts with $(objtree)/ (which means "./", so do not add "./" unless
41 # you want to delete a file from the toplevel object directory).
42 
43 __clean-files   := $(wildcard                                               \
44 		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
45 		   $(filter $(objtree)/%, $(__clean-files)))
46 
47 # ==========================================================================
48 
49 quiet_cmd_clean = CLEAN   $(obj)
50       cmd_clean = rm -rf $(__clean-files)
51 
52 __clean: $(subdir-ymn)
53 ifneq ($(strip $(__clean-files)),)
54 	$(call cmd,clean)
55 endif
56 	@:
57 
58 
59 # ===========================================================================
60 # Generic stuff
61 # ===========================================================================
62 
63 # Descending
64 # ---------------------------------------------------------------------------
65 
66 PHONY += $(subdir-ymn)
67 $(subdir-ymn):
68 	$(Q)$(MAKE) $(clean)=$@
69 
70 .PHONY: $(PHONY)
71