1 # SPDX-License-Identifier: GPL-2.0
2 # ==========================================================================
4 # ==========================================================================
11 include scripts/Kbuild.include
13 # The filename Kbuild has precedence over Makefile
14 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
15 include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
17 # Figure out what we need to build from the various variables
18 # ==========================================================================
20 __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
21 subdir-y += $(__subdir-y)
22 __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
23 subdir-m += $(__subdir-m)
24 __subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
25 subdir- += $(__subdir-)
27 # Subdirectories we need to descend into
29 subdir-ym := $(sort $(subdir-y) $(subdir-m))
30 subdir-ymn := $(sort $(subdir-ym) $(subdir-))
34 subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
36 # Temporal work-around for U-Boot
38 subdir-ymn := $(foreach f, $(subdir-ymn), \
39 $(if $(wildcard $(srctree)/$f/Makefile),$f))
41 # build a list of files to remove, usually relative to the current
44 __clean-files := $(extra-y) $(extra-m) $(extra-) \
45 $(always) $(targets) $(clean-files) \
47 $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
49 __clean-files := $(filter-out $(no-clean-files), $(__clean-files))
51 # clean-files is given relative to the current directory, unless it
52 # starts with $(objtree)/ (which means "./", so do not add "./" unless
53 # you want to delete a file from the toplevel object directory).
55 __clean-files := $(wildcard \
56 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
57 $(filter $(objtree)/%, $(__clean-files)))
61 __clean-dirs := $(wildcard \
62 $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
63 $(filter $(objtree)/%, $(clean-dirs)))
65 # ==========================================================================
67 quiet_cmd_clean = CLEAN $(obj)
68 cmd_clean = rm -f $(__clean-files)
69 quiet_cmd_cleandir = CLEAN $(__clean-dirs)
70 cmd_cleandir = rm -rf $(__clean-dirs)
73 __clean: $(subdir-ymn)
74 ifneq ($(strip $(__clean-files)),)
77 ifneq ($(strip $(__clean-dirs)),)
83 # ===========================================================================
85 # ===========================================================================
88 # ---------------------------------------------------------------------------
90 PHONY += $(subdir-ymn)
92 $(Q)$(MAKE) $(clean)=$@
94 # Declare the contents of the .PHONY variable as phony. We keep that
95 # information in a variable se we can use it in if_changed and friends.