1 # ==========================================================================
3 # ==========================================================================
10 include scripts/Kbuild.include
12 # The filename Kbuild has precedence over Makefile
13 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
14 include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
16 # Figure out what we need to build from the various variables
17 # ==========================================================================
19 __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
20 subdir-y += $(__subdir-y)
21 __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
22 subdir-m += $(__subdir-m)
23 __subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
24 subdir- += $(__subdir-)
26 # Subdirectories we need to descend into
28 subdir-ym := $(sort $(subdir-y) $(subdir-m))
29 subdir-ymn := $(sort $(subdir-ym) $(subdir-))
33 subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
35 # Temporal work-around for U-Boot
37 subdir-ymn := $(foreach f, $(subdir-ymn), \
38 $(if $(wildcard $(srctree)/$f/Makefile),$f))
40 # build a list of files to remove, usually relative to the current
43 __clean-files := $(extra-y) $(extra-m) $(extra-) \
44 $(always) $(targets) $(clean-files) \
46 $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
48 __clean-files := $(filter-out $(no-clean-files), $(__clean-files))
50 # clean-files is given relative to the current directory, unless it
51 # starts with $(objtree)/ (which means "./", so do not add "./" unless
52 # you want to delete a file from the toplevel object directory).
54 __clean-files := $(wildcard \
55 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
56 $(filter $(objtree)/%, $(__clean-files)))
60 __clean-dirs := $(wildcard \
61 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
62 $(filter $(objtree)/%, $(clean-dirs)))
64 # ==========================================================================
66 quiet_cmd_clean = CLEAN $(obj)
67 cmd_clean = rm -f $(__clean-files)
68 quiet_cmd_cleandir = CLEAN $(__clean-dirs)
69 cmd_cleandir = rm -rf $(__clean-dirs)
72 __clean: $(subdir-ymn)
73 ifneq ($(strip $(__clean-files)),)
76 ifneq ($(strip $(__clean-dirs)),)
82 # ===========================================================================
84 # ===========================================================================
87 # ---------------------------------------------------------------------------
89 PHONY += $(subdir-ymn)
91 $(Q)$(MAKE) $(clean)=$@
93 # Declare the contents of the .PHONY variable as phony. We keep that
94 # information in a variable se we can use it in if_changed and friends.