# SPDX-License-Identifier: GPL-2.0

# ==========================================================================

# Cleaning up

# ==========================================================================

src := $(srcroot)/$(obj)

PHONY := __clean

__clean:

include $(srctree)/scripts/Kbuild.include

include $(kbuild-file)

# Figure out what we need to build from the various variables

# ==========================================================================

subdir-ymn := $(sort $(subdir-y) $(subdir-m) $(subdir-) \

$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m) $(obj-))))

# Add subdir path

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

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

# directory

__clean-files := \

$(clean-files) $(targets) $(hostprogs) $(userprogs) \

$(extra-y) $(extra-m) $(extra-) \

$(always-y) $(always-m) $(always-) \

$(hostprogs-always-y) $(hostprogs-always-m) $(hostprogs-always-) \

$(userprogs-always-y) $(userprogs-always-m) $(userprogs-always-)

__clean-files := $(filter-out $(no-clean-files), $(__clean-files))

__clean-files := $(wildcard $(addprefix $(obj)/, $(__clean-files)))

# ==========================================================================

# To make this rule robust against "Argument list too long" error,

# remove $(obj)/ prefix, and restore it by a shell command.

quiet_cmd_clean = CLEAN $(obj)

cmd_clean = printf '$(obj)/%s ' $(patsubst $(obj)/%,%,$(__clean-files)) | xargs rm -rf

__clean: $(subdir-ymn)

ifneq ($(strip $(__clean-files)),)

$(call cmd,clean)

endif

@:

# ===========================================================================

# Generic stuff

# ===========================================================================

# Descending

# ---------------------------------------------------------------------------

PHONY += $(subdir-ymn)

$(subdir-ymn):

$(Q)$(MAKE) $(clean)=$@

.PHONY: $(PHONY)