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