scripts/Makefile.clean

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