scripts/Makefile.clean

   1 # ==========================================================================
   2 # Cleaning up
   3 # ==========================================================================
   4
   5 src := $(obj)
   6
   7 PHONY := __clean
   8 __clean:
   9
  10 include scripts/Kbuild.include
  11
  12 # The filename Kbuild has precedence over Makefile
  13 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
  14 include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
  15
  16 # Figure out what we need to build from the various variables
  17 # ==========================================================================
  18
  19 __subdir-y      := $(patsubst %/,%,$(filter %/, $(obj-y)))
  20 subdir-y        += $(__subdir-y)
  21 __subdir-m      := $(patsubst %/,%,$(filter %/, $(obj-m)))
  22 subdir-m        += $(__subdir-m)
  23 __subdir-       := $(patsubst %/,%,$(filter %/, $(obj-)))
  24 subdir-         += $(__subdir-)
  25
  26 # Subdirectories we need to descend into
  27
  28 subdir-ym       := $(sort $(subdir-y) $(subdir-m))
  29 subdir-ymn      := $(sort $(subdir-ym) $(subdir-))
  30
  31 # Add subdir path
  32
  33 subdir-ymn      := $(addprefix $(obj)/,$(subdir-ymn))
  34
  35 # build a list of files to remove, usually relative to the current
  36 # directory
  37
  38 __clean-files   := $(extra-y) $(extra-m) $(extra-)       \
  39                    $(always) $(targets) $(clean-files)   \
  40                    $(host-progs)                         \
  41                    $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
  42
  43 __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
  44
  45 # clean-files is given relative to the current directory, unless it
  46 # starts with $(objtree)/ (which means "./", so do not add "./" unless
  47 # you want to delete a file from the toplevel object directory).
  48
  49 __clean-files   := $(wildcard                                               \
  50                    $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
  51                    $(filter $(objtree)/%, $(__clean-files)))
  52
  53 # same as clean-files
  54
  55 __clean-dirs    := $(wildcard                                               \
  56                    $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs)))    \
  57                    $(filter $(objtree)/%, $(clean-dirs)))
  58
  59 # ==========================================================================
  60
  61 quiet_cmd_clean    = CLEAN   $(obj)
  62       cmd_clean    = rm -f $(__clean-files)
  63 quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
  64       cmd_cleandir = rm -rf $(__clean-dirs)
  65
  66
  67 __clean: $(subdir-ymn)
  68 ifneq ($(strip $(__clean-files)),)
  69         +$(call cmd,clean)
  70 endif
  71 ifneq ($(strip $(__clean-dirs)),)
  72         +$(call cmd,cleandir)
  73 endif
  74         @:
  75
  76
  77 # ===========================================================================
  78 # Generic stuff
  79 # ===========================================================================
  80
  81 # Descending
  82 # ---------------------------------------------------------------------------
  83
  84 PHONY += $(subdir-ymn)
  85 $(subdir-ymn):
  86         $(Q)$(MAKE) $(clean)=$@
  87
  88 # Declare the contents of the .PHONY variable as phony.  We keep that
  89 # information in a variable se we can use it in if_changed and friends.
  90
  91 .PHONY: $(PHONY)