release/src-rt-6.x.4708/linux/linux-2.6.36/scripts/Makefile.clean

   1 # ==========================================================================
   2 # Cleaning up
   3 # ==========================================================================
   4
   5 src := $(obj)
   6
   7 PHONY := __clean
   8 __clean:
   9
  10 # Read auto.conf if it exists, otherwise ignore
  11 -include include/config/auto.conf
  12
  13 # Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
  14 # Usage:
  15 # $(Q)$(MAKE) $(clean)=dir
  16 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
  17
  18 # The filename Kbuild has precedence over Makefile
  19 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
  20 include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
  21
  22 # Figure out what we need to build from the various variables
  23 # ==========================================================================
  24
  25 __subdir-y      := $(patsubst %/,%,$(filter %/, $(obj-y)))
  26 subdir-y        += $(__subdir-y)
  27 __subdir-m      := $(patsubst %/,%,$(filter %/, $(obj-m)))
  28 subdir-m        += $(__subdir-m)
  29 __subdir-n      := $(patsubst %/,%,$(filter %/, $(obj-n)))
  30 subdir-n        += $(__subdir-n)
  31 __subdir-       := $(patsubst %/,%,$(filter %/, $(obj-)))
  32 subdir-         += $(__subdir-)
  33
  34 # Subdirectories we need to descend into
  35
  36 subdir-ym       := $(sort $(subdir-y) $(subdir-m))
  37 subdir-ymn      := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
  38
  39 # Add subdir path
  40
  41 subdir-ymn      := $(addprefix $(obj)/,$(subdir-ymn))
  42
  43 # build a list of files to remove, usually relative to the current
  44 # directory
  45
  46 __clean-files   := $(extra-y) $(always)                  \
  47                    $(targets) $(clean-files)             \
  48                    $(host-progs)                         \
  49                    $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
  50
  51 # as clean-files is given relative to the current directory, this adds
  52 # a $(obj) prefix, except for absolute paths
  53
  54 __clean-files   := $(wildcard                                               \
  55                    $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
  56                    $(filter /%, $(__clean-files)))
  57
  58 # as clean-dirs is given relative to the current directory, this adds
  59 # a $(obj) prefix, except for absolute paths
  60
  61 __clean-dirs    := $(wildcard                                               \
  62                    $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs)))    \
  63                    $(filter /%, $(clean-dirs)))
  64
  65 # ==========================================================================
  66
  67 quiet_cmd_clean    = CLEAN   $(obj)
  68       cmd_clean    = rm -f $(__clean-files)
  69 quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
  70       cmd_cleandir = rm -rf $(__clean-dirs)
  71
  72
  73 __clean: $(subdir-ymn)
  74 ifneq ($(strip $(__clean-files)),)
  75         +$(call cmd,clean)
  76 endif
  77 ifneq ($(strip $(__clean-dirs)),)
  78         +$(call cmd,cleandir)
  79 endif
  80 ifneq ($(strip $(clean-rule)),)
  81         +$(clean-rule)
  82 endif
  83         @:
  84
  85
  86 # ===========================================================================
  87 # Generic stuff
  88 # ===========================================================================
  89
  90 # Descending
  91 # ---------------------------------------------------------------------------
  92
  93 PHONY += $(subdir-ymn)
  94 $(subdir-ymn):
  95         $(Q)$(MAKE) $(clean)=$@
  96
  97 # If quiet is set, only print short version of command
  98
  99 cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
 100
 101
 102 # Declare the contents of the .PHONY variable as phony.  We keep that
 103 # information in a variable se we can use it in if_changed and friends.
 104
 105 .PHONY: $(PHONY)