xref: /openbmc/linux/scripts/Makefile.clean (revision 8dd3cdea) 
1# SPDX-License-Identifier: GPL-2.0
2# ==========================================================================
3# Cleaning up
4# ==========================================================================
5
6src := $(obj)
7
8PHONY := __clean
9__clean:
10
11include $(srctree)/scripts/Kbuild.include
12
13# The filename Kbuild has precedence over Makefile
14kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
15include $(or $(wildcard $(kbuild-dir)/Kbuild),$(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	:= \
31	$(clean-files) $(targets) $(hostprogs) $(userprogs) \
32	$(extra-y) $(extra-m) $(extra-) \
33	$(always-y) $(always-m) $(always-) \
34	$(hostprogs-always-y) $(hostprogs-always-m) $(hostprogs-always-) \
35	$(userprogs-always-y) $(userprogs-always-m) $(userprogs-always-)
36
37__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
38
39# clean-files is given relative to the current directory, unless it
40# starts with $(objtree)/ (which means "./", so do not add "./" unless
41# you want to delete a file from the toplevel object directory).
42
43__clean-files   := $(wildcard                                               \
44		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
45		   $(filter $(objtree)/%, $(__clean-files)))
46
47# ==========================================================================
48
49quiet_cmd_clean = CLEAN   $(obj)
50      cmd_clean = rm -rf $(__clean-files)
51
52__clean: $(subdir-ymn)
53ifneq ($(strip $(__clean-files)),)
54	$(call cmd,clean)
55endif
56	@:
57
58
59# ===========================================================================
60# Generic stuff
61# ===========================================================================
62
63# Descending
64# ---------------------------------------------------------------------------
65
66PHONY += $(subdir-ymn)
67$(subdir-ymn):
68	$(Q)$(MAKE) $(clean)=$@
69
70.PHONY: $(PHONY)
71