xref: /openbmc/linux/scripts/Makefile.clean (revision 1c2dd16a) 
1# ==========================================================================
2# Cleaning up
3# ==========================================================================
4
5src := $(obj)
6
7PHONY := __clean
8__clean:
9
10include scripts/Kbuild.include
11
12# The filename Kbuild has precedence over Makefile
13kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
14include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
15
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)
23__subdir-	:= $(patsubst %/,%,$(filter %/, $(obj-)))
24subdir-		+= $(__subdir-)
25
26# Subdirectories we need to descend into
27
28subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
29subdir-ymn      := $(sort $(subdir-ym) $(subdir-))
30
31# Add subdir path
32
33subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
34
35# build a list of files to remove, usually relative to the current
36# directory
37
38__clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
39		   $(always) $(targets) $(clean-files)   \
40		   $(host-progs)                         \
41		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
42		   $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
43		   $(hostcxxlibs-y) $(hostcxxlibs-m)
44
45__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
46
47# 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).
50
51__clean-files   := $(wildcard                                               \
52		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
53		   $(filter $(objtree)/%, $(__clean-files)))
54
55# same as clean-files
56
57__clean-dirs    := $(wildcard                                               \
58		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs)))    \
59		   $(filter $(objtree)/%, $(clean-dirs)))
60
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
76	@:
77
78
79# ===========================================================================
80# Generic stuff
81# ===========================================================================
82
83# Descending
84# ---------------------------------------------------------------------------
85
86PHONY += $(subdir-ymn)
87$(subdir-ymn):
88	$(Q)$(MAKE) $(clean)=$@
89
90# 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)
94