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# Temporal work-around for U-Boot 37 38subdir-ymn := $(foreach f, $(subdir-ymn), \ 39 $(if $(wildcard $(srctree)/$f/Makefile),$f)) 40 41# build a list of files to remove, usually relative to the current 42# directory 43 44__clean-files := $(extra-y) $(extra-m) $(extra-) \ 45 $(always) $(targets) $(clean-files) \ 46 $(host-progs) \ 47 $(hostprogs-y) $(hostprogs-m) $(hostprogs-) 48 49__clean-files := $(filter-out $(no-clean-files), $(__clean-files)) 50 51# clean-files is given relative to the current directory, unless it 52# starts with $(objtree)/ (which means "./", so do not add "./" unless 53# you want to delete a file from the toplevel object directory). 54 55__clean-files := $(wildcard \ 56 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \ 57 $(filter $(objtree)/%, $(__clean-files))) 58 59# same as clean-files 60 61__clean-dirs := $(wildcard \ 62 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \ 63 $(filter $(objtree)/%, $(clean-dirs))) 64 65# ========================================================================== 66 67quiet_cmd_clean = CLEAN $(obj) 68 cmd_clean = rm -f $(__clean-files) 69quiet_cmd_cleandir = CLEAN $(__clean-dirs) 70 cmd_cleandir = rm -rf $(__clean-dirs) 71 72 73__clean: $(subdir-ymn) 74ifneq ($(strip $(__clean-files)),) 75 +$(call cmd,clean) 76endif 77ifneq ($(strip $(__clean-dirs)),) 78 +$(call cmd,cleandir) 79endif 80 @: 81 82 83# =========================================================================== 84# Generic stuff 85# =========================================================================== 86 87# Descending 88# --------------------------------------------------------------------------- 89 90PHONY += $(subdir-ymn) 91$(subdir-ymn): 92 $(Q)$(MAKE) $(clean)=$@ 93 94# Declare the contents of the .PHONY variable as phony. We keep that 95# information in a variable se we can use it in if_changed and friends. 96 97.PHONY: $(PHONY) 98