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
12include $(kbuild-file)
13
14# Figure out what we need to build from the various variables
15# ==========================================================================
16
17subdir-ymn := $(sort $(subdir-y) $(subdir-m) $(subdir-) \
18		$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m) $(obj-))))
19
20# Add subdir path
21
22subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
23
24# build a list of files to remove, usually relative to the current
25# directory
26
27__clean-files	:= \
28	$(clean-files) $(targets) $(hostprogs) $(userprogs) \
29	$(extra-y) $(extra-m) $(extra-) \
30	$(always-y) $(always-m) $(always-) \
31	$(hostprogs-always-y) $(hostprogs-always-m) $(hostprogs-always-) \
32	$(userprogs-always-y) $(userprogs-always-m) $(userprogs-always-)
33
34__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
35
36__clean-files   := $(wildcard $(addprefix $(obj)/, $(__clean-files)))
37
38# ==========================================================================
39
40# To make this rule robust against "Argument list too long" error,
41# remove $(obj)/ prefix, and restore it by a shell command.
42quiet_cmd_clean = CLEAN   $(obj)
43      cmd_clean = printf '$(obj)/%s ' $(patsubst $(obj)/%,%,$(__clean-files)) | xargs rm -rf
44
45__clean: $(subdir-ymn)
46ifneq ($(strip $(__clean-files)),)
47	$(call cmd,clean)
48endif
49	@:
50
51
52# ===========================================================================
53# Generic stuff
54# ===========================================================================
55
56# Descending
57# ---------------------------------------------------------------------------
58
59PHONY += $(subdir-ymn)
60$(subdir-ymn):
61	$(Q)$(MAKE) $(clean)=$@
62
63.PHONY: $(PHONY)