1# ==========================================================================
  2# Cleaning up
  3# ==========================================================================
  4
  5src := $(obj)
  6
  7PHONY := __clean
  8__clean:
  9
 10# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
 11# Usage:
 12# $(Q)$(MAKE) $(clean)=dir
 13clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
 14
 15# The filename Kbuild has precedence over Makefile
 16kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
 17include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
 18
 19# Figure out what we need to build from the various variables
 20# ==========================================================================
 21
 22__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
 23subdir-y	+= $(__subdir-y)
 24__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
 25subdir-m	+= $(__subdir-m)
 26__subdir-n	:= $(patsubst %/,%,$(filter %/, $(obj-n)))
 27subdir-n	+= $(__subdir-n)
 28__subdir-	:= $(patsubst %/,%,$(filter %/, $(obj-)))
 29subdir-		+= $(__subdir-)
 30
 31# Subdirectories we need to descend into
 32
 33subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
 34subdir-ymn      := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
 35
 36# Add subdir path
 37
 38subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
 39
 40# build a list of files to remove, usually relative to the current
 41# directory
 42
 43__clean-files	:= $(extra-y) $(always)                  \
 44		   $(targets) $(clean-files)             \
 45		   $(host-progs)                         \
 46		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
 
 
 47
 48__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
 49
 50# as clean-files is given relative to the current directory, this adds
 51# a $(obj) prefix, except for absolute paths
 52
 53__clean-files   := $(wildcard                                               \
 54                   $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
 55		   $(filter /%, $(__clean-files)))
 56
 57# as clean-dirs is given relative to the current directory, this adds
 58# a $(obj) prefix, except for absolute paths
 59
 60__clean-dirs    := $(wildcard                                               \
 61                   $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs)))    \
 62		   $(filter /%, $(clean-dirs)))
 63
 64# ==========================================================================
 65
 66quiet_cmd_clean    = CLEAN   $(obj)
 67      cmd_clean    = rm -f $(__clean-files)
 68quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
 69      cmd_cleandir = rm -rf $(__clean-dirs)
 70
 71
 72__clean: $(subdir-ymn)
 73ifneq ($(strip $(__clean-files)),)
 74	+$(call cmd,clean)
 75endif
 76ifneq ($(strip $(__clean-dirs)),)
 77	+$(call cmd,cleandir)
 78endif
 79ifneq ($(strip $(clean-rule)),)
 80	+$(clean-rule)
 81endif
 82	@:
 83
 84
 85# ===========================================================================
 86# Generic stuff
 87# ===========================================================================
 88
 89# Descending
 90# ---------------------------------------------------------------------------
 91
 92PHONY += $(subdir-ymn)
 93$(subdir-ymn):
 94	$(Q)$(MAKE) $(clean)=$@
 95
 96# If quiet is set, only print short version of command
 97
 98cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
 99
100
101# Declare the contents of the .PHONY variable as phony.  We keep that
102# information in a variable se we can use it in if_changed and friends.
103
104.PHONY: $(PHONY)

 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)