1# ========================================================================== 2# Cleaning up 3# ========================================================================== 4 5src := $(obj) 6 7PHONY := __clean 8__clean: 9 10# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir 11# Usage: 12# $(Q)$(MAKE) $(clean)=dir 13clean := -f $(srctree)/scripts/Makefile.clean obj 14 15# The filename Kbuild has precedence over Makefile 16kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) 17include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile) 18 19# Figure out what we need to build from the various variables 20# ========================================================================== 21 22__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) 23subdir-y += $(__subdir-y) 24__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) 25subdir-m += $(__subdir-m) 26__subdir- := $(patsubst %/,%,$(filter %/, $(obj-))) 27subdir- += $(__subdir-) 28 29# Subdirectories we need to descend into 30 31subdir-ym := $(sort $(subdir-y) $(subdir-m)) 32subdir-ymn := $(sort $(subdir-ym) $(subdir-)) 33 34# Add subdir path 35 36subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn)) 37 38# build a list of files to remove, usually relative to the current 39# directory 40 41__clean-files := $(extra-y) $(extra-m) $(extra-) \ 42 $(always) $(targets) $(clean-files) \ 43 $(host-progs) \ 44 $(hostprogs-y) $(hostprogs-m) $(hostprogs-) 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 77ifneq ($(strip $(clean-rule)),) 78 +$(clean-rule) 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# If quiet is set, only print short version of command 95 96cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1)) 97 98 99# Declare the contents of the .PHONY variable as phony. We keep that 100# information in a variable se we can use it in if_changed and friends. 101 102.PHONY: $(PHONY) 103