179 lines
5.1 KiB
Makefile
179 lines
5.1 KiB
Makefile
cur_makefile := $(lastword $(MAKEFILE_LIST))
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# ==========================================================================
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# Cleaning up
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# ==========================================================================
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src := $(obj)
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PHONY := __clean
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__clean:
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$(cur_makefile): ;
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# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
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# Usage:
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# $(Q)$(MAKE) $(clean)=dir
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clean := -f $(srctree)/scripts/clean.mk obj
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kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
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include $(kbuild-dir)/Makefile
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# Figure out what we need to build from the various variables
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# ==========================================================================
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__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
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subdir-y += $(__subdir-y)
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__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
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subdir-m += $(__subdir-m)
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__subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
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subdir- += $(__subdir-)
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# Subdirectories we need to descend into
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subdir-ym := $(sort $(subdir-y) $(subdir-m))
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subdir-ymn := $(sort $(subdir-ym) $(subdir-))
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obj-ymn := $(obj-y) $(obj-m) $(obj-)
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lib-ymn := $(lib-y) $(lib-m) $(lib-)
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# if $(foo-objs) exists, foo.o is a composite object
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multi-used-ymn := $(sort $(foreach m,$(obj-ymn), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
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multi-objs-ymn := $(foreach m, $(multi-used-ymn), $($(m:.o=-objs)) $($(m:.o=-y)))
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obj-ymn := $(patsubst %/, %/built-in.o %/built-in.a, $(obj-y) $(obj-m) $(obj-))
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extra-ymn := $(extra-y) $(extra-m) $(extra-)
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# build a list of files to remove, usually relative to the current
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# directory
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__clean-files := $(obj-ymn) $(lib-ymn) $(multi-used-ymn) \
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$(multi-objs-ymn) $(extra-ymn) \
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built-in.o built-in.a lib.a \
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$(always) $(targets) $(clean-files)
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__clean-files := $(filter-out $(no-clean-files), $(__clean-files))
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# clean-files is given relative to the current directory, unless it
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# starts with $(objtree)/ (which means "./", so do not add "./" unless
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# you want to delete a file from the toplevel object directory).
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__clean-files := $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
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$(filter $(objtree)/%, $(__clean-files))
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# same as clean-files
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__clean-dirs := $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
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$(filter $(objtree)/%, $(clean-dirs))
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# Add subdir path
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subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
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obj-ymn := $(addprefix $(obj)/,$(obj-ymn))
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lib-ymn := $(addprefix $(obj)/,$(lib-ymn))
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multi-used-ymn := $(addprefix $(obj)/,$(multi-used-ymn))
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multi-objs-ymn := $(addprefix $(obj)/,$(multi-objs-ymn))
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SUBMODS := $(filter $(obj)/%,$(SUBMODS))
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ifneq ($(SUBMODS),)
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include scripts/submods.mk
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buildsubdir-ymn := $(call get_subdirs,$(subdir-ymn),$(SUBMODS))
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__full-clean-files := $(__clean-files)
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__clean-files := $(filter $(SUBMODS),$(__full-clean-files))
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__clean-files += $(obj)/built-in.o $(obj)/built-in.a $(obj)/lib.a
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__clean-files += $(foreach m,$(multi-used-ymn),$(if $(filter $(SUBMODS),$(call get_multi_objs,$m))),$m,)
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# Check for invalid targets
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errobj-ymn := $(SUBMODS)
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errobj-ymn := $(filter-out $(buildsubdir-ymn) $(addsuffix /%,$(buildsubdir-ymn)),$(errobj-ymn))
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errobj-ymn := $(filter-out $(__clean-files),$(errobj-ymn))
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errobj-ymn := $(filter-out $(foreach m,$(multi-used-ymn),$(call get_multi_objs,$m)),$(errobj-ymn))
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ifneq ($(errobj-ymn),)
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$(warning Unknown targets in [$(obj)]: $(errobj-ymn))
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endif
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else # SUBMODS
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ifeq ($(ALLCLEAN),1)
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RM_ALL := 1
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ifneq ($(KBUILD_OUTPUT),)
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RM_DIR := 1
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endif
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endif
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ifeq ($(RM_DIR),1)
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buildsubdir-ymn :=
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else
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buildsubdir-ymn := $(subdir-ymn)
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endif
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endif # SUBMODS
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# Include intermediate files
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include scripts/include.mk
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__clean-files += $(foreach f,$(__clean-files),$(call get_depfile_name,$f))
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#$(info RM_DIR=$(RM_DIR), RM_ALL=$(RM_ALL))
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#$(info buildsubdir-ymn=$(buildsubdir-ymn))
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#$(info __clean-files=$(__clean-files))
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__clean-files := $(wildcard $(__clean-files))
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__clean-dirs := $(wildcard $(__clean-dirs))
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# ==========================================================================
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ifeq ($(RM_DIR),1)
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quiet_cmd_clean = RMDIR $(obj)
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cmd_clean = $(call CMDRMDIR,$(obj))
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else # RM_DIR
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quiet_cmd_clean = CLEAN $(obj)
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ifeq ($(RM_ALL),1)
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cmd_clean = $(call CMDRMFILER,$(obj),*.o *.a *.s *.d)
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else
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cmd_clean = $(call CMDRMFILE,$(__clean-files))
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endif
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quiet_cmd_cleandir = CLEAN $(__clean-dirs)
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cmd_cleandir = $(call CMDRMDIR,$(__clean-dirs))
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endif # RM_DIR
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__clean: $(buildsubdir-ymn)
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@:
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ifeq ($(RM_DIR),1)
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+$(call cmd,clean)
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else # RM_DIR
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ifeq ($(RM_ALL),1)
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+$(call cmd,clean)
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else
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ifneq ($(strip $(__clean-files)),)
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+$(call cmd,clean)
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endif
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endif
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ifneq ($(strip $(__clean-dirs)),)
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+$(call cmd,cleandir)
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endif
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endif # RM_DIR
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# ===========================================================================
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# Generic stuff
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# ===========================================================================
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# Descending
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# ---------------------------------------------------------------------------
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PHONY += $(subdir-ymn)
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$(subdir-ymn):
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$(Q)$(MAKE) $(clean)=$@
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# Declare the contents of the .PHONY variable as phony. We keep that
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# information in a variable se we can use it in if_changed and friends.
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.PHONY: $(PHONY)
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