Makefile.clean 2.96 KB
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# SPDX-License-Identifier: GPL-2.0
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# ==========================================================================
# Cleaning up
# ==========================================================================

src := $(obj)

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PHONY := __clean
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__clean:

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include scripts/Kbuild.include
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# The filename Kbuild has precedence over Makefile
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kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
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# Figure out what we need to build from the various variables
# ==========================================================================

__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y	+= $(__subdir-y)
__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
subdir-m	+= $(__subdir-m)
__subdir-	:= $(patsubst %/,%,$(filter %/, $(obj-)))
subdir-		+= $(__subdir-)

# Subdirectories we need to descend into

subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
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subdir-ymn      := $(sort $(subdir-ym) $(subdir-))
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# Add subdir path

subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))

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# build a list of files to remove, usually relative to the current
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# directory

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__clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
		   $(always) $(targets) $(clean-files)   \
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		   $(host-progs)                         \
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		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
		   $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
		   $(hostcxxlibs-y) $(hostcxxlibs-m)
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__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))

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# clean-files is given relative to the current directory, unless it
# starts with $(objtree)/ (which means "./", so do not add "./" unless
# you want to delete a file from the toplevel object directory).
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__clean-files   := $(wildcard                                               \
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		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
		   $(filter $(objtree)/%, $(__clean-files)))
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# same as clean-files
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__clean-dirs    := $(wildcard                                               \
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		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs)))    \
		   $(filter $(objtree)/%, $(clean-dirs)))
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# ==========================================================================

quiet_cmd_clean    = CLEAN   $(obj)
      cmd_clean    = rm -f $(__clean-files)
quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
      cmd_cleandir = rm -rf $(__clean-dirs)


__clean: $(subdir-ymn)
ifneq ($(strip $(__clean-files)),)
	+$(call cmd,clean)
endif
ifneq ($(strip $(__clean-dirs)),)
	+$(call cmd,cleandir)
endif
	@:


# ===========================================================================
# Generic stuff
# ===========================================================================

# Descending
# ---------------------------------------------------------------------------

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PHONY += $(subdir-ymn)
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$(subdir-ymn):
	$(Q)$(MAKE) $(clean)=$@

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# Declare the contents of the .PHONY variable as phony.  We keep that
# information in a variable se we can use it in if_changed and friends.

.PHONY: $(PHONY)