xref: /linux/scripts/Makefile.clean (revision f86fd32d) 
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
20subdir-ymn := $(sort $(subdir-y) $(subdir-m) $(subdir-) \
21		$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m) $(obj-))))
22
23# Add subdir path
24
25subdir-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	:= $(extra-y) $(extra-m) $(extra-)       \
31		   $(always) $(always-y) $(always-m) $(always-) $(targets) $(clean-files)   \
32		   $(hostprogs) $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
33		   $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
34		   $(hostcxxlibs-y) $(hostcxxlibs-m)
35
36__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
37
38# clean-files is given relative to the current directory, unless it
39# starts with $(objtree)/ (which means "./", so do not add "./" unless
40# you want to delete a file from the toplevel object directory).
41
42__clean-files   := $(wildcard                                               \
43		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
44		   $(filter $(objtree)/%, $(__clean-files)))
45
46# ==========================================================================
47
48quiet_cmd_clean = CLEAN   $(obj)
49      cmd_clean = rm -rf $(__clean-files)
50
51__clean: $(subdir-ymn)
52ifneq ($(strip $(__clean-files)),)
53	$(call cmd,clean)
54endif
55	@:
56
57
58# ===========================================================================
59# Generic stuff
60# ===========================================================================
61
62# Descending
63# ---------------------------------------------------------------------------
64
65PHONY += $(subdir-ymn)
66$(subdir-ymn):
67	$(Q)$(MAKE) $(clean)=$@
68
69.PHONY: $(PHONY)
70