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"Das U-Boot" Source Tree
1# SPDX-License-Identifier: GPL-2.0
2# ==========================================================================
3# Cleaning up
4# ==========================================================================
5
6src := $(obj)
7
8PHONY := __clean
9__clean:
10
11include scripts/Kbuild.include
12
13# The filename Kbuild has precedence over Makefile
14kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
15include $(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-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
21subdir-y += $(__subdir-y)
22__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
23subdir-m += $(__subdir-m)
24__subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
25subdir- += $(__subdir-)
26
27# Subdirectories we need to descend into
28
29subdir-ym := $(sort $(subdir-y) $(subdir-m))
30subdir-ymn := $(sort $(subdir-ym) $(subdir-))
31
32# Add subdir path
33
34subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
35
36# Temporal work-around for U-Boot
37
38subdir-ymn := $(foreach f, $(subdir-ymn), \
39 $(if $(wildcard $(srctree)/$f/Makefile),$f))
40
41# build a list of files to remove, usually relative to the current
42# directory
43
44__clean-files := $(extra-y) $(extra-m) $(extra-) \
45 $(always) $(targets) $(clean-files) \
46 $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
47 $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
48 $(hostcxxlibs-y) $(hostcxxlibs-m)
49
50__clean-files := $(filter-out $(no-clean-files), $(__clean-files))
51
52# clean-files is given relative to the current directory, unless it
53# starts with $(objtree)/ (which means "./", so do not add "./" unless
54# you want to delete a file from the toplevel object directory).
55
56__clean-files := $(wildcard \
57 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
58 $(filter $(objtree)/%, $(__clean-files)))
59
60# same as clean-files
61
62__clean-dirs := $(wildcard \
63 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
64 $(filter $(objtree)/%, $(clean-dirs)))
65
66# ==========================================================================
67
68quiet_cmd_clean = CLEAN $(obj)
69 cmd_clean = rm -f $(__clean-files)
70quiet_cmd_cleandir = CLEAN $(__clean-dirs)
71 cmd_cleandir = rm -rf $(__clean-dirs)
72
73
74__clean: $(subdir-ymn)
75ifneq ($(strip $(__clean-files)),)
76 +$(call cmd,clean)
77endif
78ifneq ($(strip $(__clean-dirs)),)
79 +$(call cmd,cleandir)
80endif
81 @:
82
83
84# ===========================================================================
85# Generic stuff
86# ===========================================================================
87
88# Descending
89# ---------------------------------------------------------------------------
90
91PHONY += $(subdir-ymn)
92$(subdir-ymn):
93 $(Q)$(MAKE) $(clean)=$@
94
95.PHONY: $(PHONY)