1 | # ==========================================================================
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2 | # Cleaning up
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3 | # ==========================================================================
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4 |
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5 | src := $(obj)
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6 |
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7 | PHONY := __clean
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8 | __clean:
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9 |
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10 | # Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
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11 | # Usage:
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12 | # $(Q)$(MAKE) $(clean)=dir
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13 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
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14 |
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15 | # The filename Kbuild has precedence over Makefile
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16 | kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
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17 | include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
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18 |
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19 | # Figure out what we need to build from the various variables
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20 | # ==========================================================================
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21 |
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22 | __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
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23 | subdir-y += $(__subdir-y)
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24 | __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
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25 | subdir-m += $(__subdir-m)
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26 | __subdir-n := $(patsubst %/,%,$(filter %/, $(obj-n)))
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27 | subdir-n += $(__subdir-n)
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28 | __subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
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29 | subdir- += $(__subdir-)
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30 |
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31 | # Subdirectories we need to descend into
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32 |
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33 | subdir-ym := $(sort $(subdir-y) $(subdir-m))
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34 | subdir-ymn := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
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35 |
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36 | # Add subdir path
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37 |
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38 | subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
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39 |
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40 | # build a list of files to remove, usually releative to the current
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41 | # directory
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42 |
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43 | __clean-files := $(extra-y) $(EXTRA_TARGETS) $(always) \
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44 | $(targets) $(clean-files) \
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45 | $(host-progs) \
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46 | $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
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47 |
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48 | # as clean-files is given relative to the current directory, this adds
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49 | # a $(obj) prefix, except for absolute paths
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50 |
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51 | __clean-files := $(wildcard \
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52 | $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
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53 | $(filter /%, $(__clean-files)))
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54 |
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55 | # as clean-dirs is given relative to the current directory, this adds
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56 | # a $(obj) prefix, except for absolute paths
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57 |
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58 | __clean-dirs := $(wildcard \
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59 | $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs))) \
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60 | $(filter /%, $(clean-dirs)))
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61 |
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62 | # ==========================================================================
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63 |
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64 | quiet_cmd_clean = CLEAN $(obj)
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65 | cmd_clean = rm -f $(__clean-files)
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66 | quiet_cmd_cleandir = CLEAN $(__clean-dirs)
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67 | cmd_cleandir = rm -rf $(__clean-dirs)
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68 |
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69 |
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70 | __clean: $(subdir-ymn)
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71 | ifneq ($(strip $(__clean-files)),)
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72 | +$(call cmd,clean)
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73 | endif
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74 | ifneq ($(strip $(__clean-dirs)),)
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75 | +$(call cmd,cleandir)
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76 | endif
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77 | ifneq ($(strip $(clean-rule)),)
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78 | +$(clean-rule)
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79 | endif
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80 | @:
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81 |
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82 |
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83 | # ===========================================================================
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84 | # Generic stuff
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85 | # ===========================================================================
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86 |
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87 | # Descending
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88 | # ---------------------------------------------------------------------------
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89 |
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90 | PHONY += $(subdir-ymn)
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91 | $(subdir-ymn):
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92 | $(Q)$(MAKE) $(clean)=$@
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93 |
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94 | # If quiet is set, only print short version of command
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95 |
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96 | cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
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97 |
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98 |
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99 | # Declare the contents of the .PHONY variable as phony. We keep that
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100 | # information in a variable se we can use it in if_changed and friends.
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101 |
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102 | .PHONY: $(PHONY)
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