scripts/Makefile.clean

   1 # SPDX-License-Identifier: GPL-2.0
   2 # ==========================================================================
   3 # Cleaning up
   4 # ==========================================================================
   5
   6 src := $(obj)
   7
   8 PHONY := __clean
   9 __clean:
  10
  11 include scripts/Kbuild.include
  12
  13 # The filename Kbuild has precedence over Makefile
  14 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
  15 include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
  16
  17 # Figure out what we need to build from the various variables
  18 # ==========================================================================
  19
  20 __subdir-y      := $(patsubst %/,%,$(filter %/, $(obj-y)))
  21 subdir-y        += $(__subdir-y)
  22 __subdir-m      := $(patsubst %/,%,$(filter %/, $(obj-m)))
  23 subdir-m        += $(__subdir-m)
  24 __subdir-       := $(patsubst %/,%,$(filter %/, $(obj-)))
  25 subdir-         += $(__subdir-)
  26
  27 # Subdirectories we need to descend into
  28
  29 subdir-ym       := $(sort $(subdir-y) $(subdir-m))
  30 subdir-ymn      := $(sort $(subdir-ym) $(subdir-))
  31
  32 # Add subdir path
  33
  34 subdir-ymn      := $(addprefix $(obj)/,$(subdir-ymn))
  35
  36 # build a list of files to remove, usually relative to the current
  37 # directory
  38
  39 __clean-files   := $(extra-y) $(extra-m) $(extra-)       \
  40                    $(always) $(targets) $(clean-files)   \
  41                    $(host-progs)                         \
  42                    $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
  43                    $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
  44                    $(hostcxxlibs-y) $(hostcxxlibs-m)
  45
  46 __clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
  47
  48 # clean-files is given relative to the current directory, unless it
  49 # starts with $(objtree)/ (which means "./", so do not add "./" unless
  50 # you want to delete a file from the toplevel object directory).
  51
  52 __clean-files   := $(wildcard                                               \
  53                    $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
  54                    $(filter $(objtree)/%, $(__clean-files)))
  55
  56 # same as clean-files
  57
  58 __clean-dirs    := $(wildcard                                               \
  59                    $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs)))    \
  60                    $(filter $(objtree)/%, $(clean-dirs)))
  61
  62 # ==========================================================================
  63
  64 quiet_cmd_clean    = CLEAN   $(obj)
  65       cmd_clean    = rm -f $(__clean-files)
  66 quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
  67       cmd_cleandir = rm -rf $(__clean-dirs)
  68
  69
  70 __clean: $(subdir-ymn)
  71 ifneq ($(strip $(__clean-files)),)
  72         +$(call cmd,clean)
  73 endif
  74 ifneq ($(strip $(__clean-dirs)),)
  75         +$(call cmd,cleandir)
  76 endif
  77         @:
  78
  79
  80 # ===========================================================================
  81 # Generic stuff
  82 # ===========================================================================
  83
  84 # Descending
  85 # ---------------------------------------------------------------------------
  86
  87 PHONY += $(subdir-ymn)
  88 $(subdir-ymn):
  89         $(Q)$(MAKE) $(clean)=$@
  90
  91 # Declare the contents of the .PHONY variable as phony.  We keep that
  92 # information in a variable se we can use it in if_changed and friends.
  93
  94 .PHONY: $(PHONY)