1# SPDX-License-Identifier: GPL-2.0 2# ========================================================================== 3# Cleaning up 4# ========================================================================== 5 6src := $(obj) 7 8PHONY := __clean 9__clean: 10 11include scripts/Kbuild.include 12 13# The filename Kbuild has precedence over Makefile 14kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) 15include $(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))) 21subdir-y += $(__subdir-y) 22__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) 23subdir-m += $(__subdir-m) 24__subdir- := $(patsubst %/,%,$(filter %/, $(obj-))) 25subdir- += $(__subdir-) 26 27# Subdirectories we need to descend into 28 29subdir-ym := $(sort $(subdir-y) $(subdir-m)) 30subdir-ymn := $(sort $(subdir-ym) $(subdir-)) 31 32# Add subdir path 33 34subdir-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 64quiet_cmd_clean = CLEAN $(obj) 65 cmd_clean = rm -f $(__clean-files) 66quiet_cmd_cleandir = CLEAN $(__clean-dirs) 67 cmd_cleandir = rm -rf $(__clean-dirs) 68 69 70__clean: $(subdir-ymn) 71ifneq ($(strip $(__clean-files)),) 72 +$(call cmd,clean) 73endif 74ifneq ($(strip $(__clean-dirs)),) 75 +$(call cmd,cleandir) 76endif 77 @: 78 79 80# =========================================================================== 81# Generic stuff 82# =========================================================================== 83 84# Descending 85# --------------------------------------------------------------------------- 86 87PHONY += $(subdir-ymn) 88$(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) 95