Root/scripts/Makefile.clean

1# ==========================================================================
2# Cleaning up
3# ==========================================================================
4
5src := $(obj)
6
7PHONY := __clean
8__clean:
9
10# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
11# Usage:
12# $(Q)$(MAKE) $(clean)=dir
13clean := -f $(srctree)/scripts/Makefile.clean obj
14
15# The filename Kbuild has precedence over Makefile
16kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
17include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
18
19# Figure out what we need to build from the various variables
20# ==========================================================================
21
22__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
23subdir-y += $(__subdir-y)
24__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
25subdir-m += $(__subdir-m)
26__subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
27subdir- += $(__subdir-)
28
29# Subdirectories we need to descend into
30
31subdir-ym := $(sort $(subdir-y) $(subdir-m))
32subdir-ymn := $(sort $(subdir-ym) $(subdir-))
33
34# Add subdir path
35
36subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
37
38# build a list of files to remove, usually relative to the current
39# directory
40
41__clean-files := $(extra-y) $(extra-m) $(extra-) \
42           $(always) $(targets) $(clean-files) \
43           $(host-progs) \
44           $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
45
46__clean-files := $(filter-out $(no-clean-files), $(__clean-files))
47
48# as clean-files is given relative to the current directory, this adds
49# a $(obj) prefix, except for absolute paths
50
51__clean-files := $(wildcard \
52                   $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
53           $(filter /%, $(__clean-files)))
54
55# as clean-dirs is given relative to the current directory, this adds
56# a $(obj) prefix, except for absolute paths
57
58__clean-dirs := $(wildcard \
59                   $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs))) \
60           $(filter /%, $(clean-dirs)))
61
62# ==========================================================================
63
64quiet_cmd_clean = CLEAN $(obj)
65      cmd_clean = rm -f $(__clean-files)
66quiet_cmd_cleandir = CLEAN $(__clean-dirs)
67      cmd_cleandir = rm -rf $(__clean-dirs)
68
69
70__clean: $(subdir-ymn)
71ifneq ($(strip $(__clean-files)),)
72    +$(call cmd,clean)
73endif
74ifneq ($(strip $(__clean-dirs)),)
75    +$(call cmd,cleandir)
76endif
77ifneq ($(strip $(clean-rule)),)
78    +$(clean-rule)
79endif
80    @:
81
82
83# ===========================================================================
84# Generic stuff
85# ===========================================================================
86
87# Descending
88# ---------------------------------------------------------------------------
89
90PHONY += $(subdir-ymn)
91$(subdir-ymn):
92    $(Q)$(MAKE) $(clean)=$@
93
94# If quiet is set, only print short version of command
95
96cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
97
98
99# Declare the contents of the .PHONY variable as phony. We keep that
100# information in a variable se we can use it in if_changed and friends.
101
102.PHONY: $(PHONY)
103

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