Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
43__clean-files := $(filter-out $(no-clean-files), $(__clean-files))
44
45# as clean-files is given relative to the current directory, this adds
46# a $(obj) prefix, except for absolute paths
47
48__clean-files := $(wildcard \
49 $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
50 $(filter /%, $(__clean-files)))
51
52# as clean-dirs is given relative to the current directory, this adds
53# a $(obj) prefix, except for absolute paths
54
55__clean-dirs := $(wildcard \
56 $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs))) \
57 $(filter /%, $(clean-dirs)))
58
59# ==========================================================================
60
61quiet_cmd_clean = CLEAN $(obj)
62 cmd_clean = rm -f $(__clean-files)
63quiet_cmd_cleandir = CLEAN $(__clean-dirs)
64 cmd_cleandir = rm -rf $(__clean-dirs)
65
66
67__clean: $(subdir-ymn)
68ifneq ($(strip $(__clean-files)),)
69 +$(call cmd,clean)
70endif
71ifneq ($(strip $(__clean-dirs)),)
72 +$(call cmd,cleandir)
73endif
74ifneq ($(strip $(clean-rule)),)
75 +$(clean-rule)
76endif
77 @:
78
79
80# ===========================================================================
81# Generic stuff
82# ===========================================================================
83
84# Descending
85# ---------------------------------------------------------------------------
86
87PHONY += $(subdir-ymn)
88$(subdir-ymn):
89 $(Q)$(MAKE) $(clean)=$@
90
91# Declare the contents of the .PHONY variable as phony. We keep that
92# information in a variable se we can use it in if_changed and friends.
93
94.PHONY: $(PHONY)