scripts/Makefile.clean

   1 # ==========================================================================
   2 # Cleaning up
   3 # ==========================================================================
   4 #
   5 # SPDX-License-Identifier:      GPL-2.0
   6 #
   7
   8 src := $(obj)
   9
  10 PHONY := __clean
  11 __clean:
  12
  13 include scripts/Kbuild.include
  14
  15 # The filename Kbuild has precedence over Makefile
  16 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
  17 include $(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)))
  23 subdir-y        += $(__subdir-y)
  24 __subdir-m      := $(patsubst %/,%,$(filter %/, $(obj-m)))
  25 subdir-m        += $(__subdir-m)
  26 __subdir-       := $(patsubst %/,%,$(filter %/, $(obj-)))
  27 subdir-         += $(__subdir-)
  28
  29 # Subdirectories we need to descend into
  30
  31 subdir-ym       := $(sort $(subdir-y) $(subdir-m))
  32 subdir-ymn      := $(sort $(subdir-ym) $(subdir-))
  33
  34 # Add subdir path
  35
  36 subdir-ymn      := $(addprefix $(obj)/,$(subdir-ymn))
  37
  38 # Temporal work-around for U-Boot
  39
  40 subdir-ymn      := $(foreach f, $(subdir-ymn), \
  41                                 $(if $(wildcard $(srctree)/$f/Makefile),$f))
  42
  43 # build a list of files to remove, usually relative to the current
  44 # directory
  45
  46 __clean-files   := $(extra-y) $(extra-m) $(extra-)       \
  47                    $(always) $(targets) $(clean-files)   \
  48                    $(host-progs)                         \
  49                    $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
  50
  51 __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
  52
  53 # clean-files is given relative to the current directory, unless it
  54 # starts with $(objtree)/ (which means "./", so do not add "./" unless
  55 # you want to delete a file from the toplevel object directory).
  56
  57 __clean-files   := $(wildcard                                               \
  58                    $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
  59                    $(filter $(objtree)/%, $(__clean-files)))
  60
  61 # same as clean-files
  62
  63 __clean-dirs    := $(wildcard                                               \
  64                    $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs)))    \
  65                    $(filter $(objtree)/%, $(clean-dirs)))
  66
  67 # ==========================================================================
  68
  69 quiet_cmd_clean    = CLEAN   $(obj)
  70       cmd_clean    = rm -f $(__clean-files)
  71 quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
  72       cmd_cleandir = rm -rf $(__clean-dirs)
  73
  74
  75 __clean: $(subdir-ymn)
  76 ifneq ($(strip $(__clean-files)),)
  77         +$(call cmd,clean)
  78 endif
  79 ifneq ($(strip $(__clean-dirs)),)
  80         +$(call cmd,cleandir)
  81 endif
  82         @:
  83
  84
  85 # ===========================================================================
  86 # Generic stuff
  87 # ===========================================================================
  88
  89 # Descending
  90 # ---------------------------------------------------------------------------
  91
  92 PHONY += $(subdir-ymn)
  93 $(subdir-ymn):
  94         $(Q)$(MAKE) $(clean)=$@
  95
  96 # Declare the contents of the .PHONY variable as phony.  We keep that
  97 # information in a variable se we can use it in if_changed and friends.
  98
  99 .PHONY: $(PHONY)