1*4882a593Smuzhiyun# ========================================================================== 2*4882a593Smuzhiyun# Cleaning up 3*4882a593Smuzhiyun# ========================================================================== 4*4882a593Smuzhiyun 5*4882a593Smuzhiyunsrc := $(obj) 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunPHONY := __clean 8*4882a593Smuzhiyun__clean: 9*4882a593Smuzhiyun 10*4882a593Smuzhiyuninclude scripts/Kbuild.include 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun# The filename Kbuild has precedence over Makefile 13*4882a593Smuzhiyunkbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) 14*4882a593Smuzhiyun-include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile) 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun# Figure out what we need to build from the various variables 17*4882a593Smuzhiyun# ========================================================================== 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) 20*4882a593Smuzhiyunsubdir-y += $(__subdir-y) 21*4882a593Smuzhiyun__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) 22*4882a593Smuzhiyunsubdir-m += $(__subdir-m) 23*4882a593Smuzhiyun__subdir- := $(patsubst %/,%,$(filter %/, $(obj-))) 24*4882a593Smuzhiyunsubdir- += $(__subdir-) 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun# Subdirectories we need to descend into 27*4882a593Smuzhiyun 28*4882a593Smuzhiyunsubdir-ym := $(sort $(subdir-y) $(subdir-m)) 29*4882a593Smuzhiyunsubdir-ymn := $(sort $(subdir-ym) $(subdir-)) 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun# Add subdir path 32*4882a593Smuzhiyun 33*4882a593Smuzhiyunsubdir-ymn := $(addprefix $(obj)/,$(subdir-ymn)) 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun# build a list of files to remove, usually relative to the current 36*4882a593Smuzhiyun# directory 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun__clean-files := $(extra-y) $(extra-m) $(extra-) \ 39*4882a593Smuzhiyun $(always) $(targets) $(clean-files) \ 40*4882a593Smuzhiyun $(host-progs) \ 41*4882a593Smuzhiyun $(hostprogs-y) $(hostprogs-m) $(hostprogs-) 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun__clean-files := $(filter-out $(no-clean-files), $(__clean-files)) 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun# clean-files is given relative to the current directory, unless it 46*4882a593Smuzhiyun# starts with $(objtree)/ (which means "./", so do not add "./" unless 47*4882a593Smuzhiyun# you want to delete a file from the toplevel object directory). 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun__clean-files := $(wildcard \ 50*4882a593Smuzhiyun $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \ 51*4882a593Smuzhiyun $(filter $(objtree)/%, $(__clean-files))) 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun# same as clean-files 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun__clean-dirs := $(wildcard \ 56*4882a593Smuzhiyun $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \ 57*4882a593Smuzhiyun $(filter $(objtree)/%, $(clean-dirs))) 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun# ========================================================================== 60*4882a593Smuzhiyun 61*4882a593Smuzhiyunquiet_cmd_clean = CLEAN $(obj) 62*4882a593Smuzhiyun cmd_clean = rm -f $(__clean-files) 63*4882a593Smuzhiyunquiet_cmd_cleandir = CLEAN $(__clean-dirs) 64*4882a593Smuzhiyun cmd_cleandir = rm -rf $(__clean-dirs) 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun__clean: $(subdir-ymn) 68*4882a593Smuzhiyunifneq ($(strip $(__clean-files)),) 69*4882a593Smuzhiyun +$(call cmd,clean) 70*4882a593Smuzhiyunendif 71*4882a593Smuzhiyunifneq ($(strip $(__clean-dirs)),) 72*4882a593Smuzhiyun +$(call cmd,cleandir) 73*4882a593Smuzhiyunendif 74*4882a593Smuzhiyun @: 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun 77*4882a593Smuzhiyun# =========================================================================== 78*4882a593Smuzhiyun# Generic stuff 79*4882a593Smuzhiyun# =========================================================================== 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun# Descending 82*4882a593Smuzhiyun# --------------------------------------------------------------------------- 83*4882a593Smuzhiyun 84*4882a593SmuzhiyunPHONY += $(subdir-ymn) 85*4882a593Smuzhiyun$(subdir-ymn): 86*4882a593Smuzhiyun $(Q)$(MAKE) $(clean)=$@ 87*4882a593Smuzhiyun 88*4882a593Smuzhiyun# Declare the contents of the .PHONY variable as phony. We keep that 89*4882a593Smuzhiyun# information in a variable se we can use it in if_changed and friends. 90*4882a593Smuzhiyun 91*4882a593Smuzhiyun.PHONY: $(PHONY) 92