xref: /openbmc/u-boot/scripts/Makefile.clean (revision cdaa633f) 
1# ==========================================================================
2# Cleaning up
3# ==========================================================================
4#
5# SPDX-License-Identifier:	GPL-2.0
6#
7
8src := $(obj)
9
10PHONY := __clean
11__clean:
12
13include scripts/Kbuild.include
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# Temporal work-around for U-Boot
39
40subdir-ymn	:= $(foreach f, $(subdir-ymn), \
41				$(if $(wildcard $(srctree)/$f/Makefile),$f))
42
43# build a list of files to remove, usually relative to the current
44# directory
45
46__clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
47		   $(always) $(targets) $(clean-files)   \
48		   $(host-progs)                         \
49		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
50
51__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
52
53# clean-files is given relative to the current directory, unless it
54# starts with $(objtree)/ (which means "./", so do not add "./" unless
55# you want to delete a file from the toplevel object directory).
56
57__clean-files   := $(wildcard                                               \
58		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
59		   $(filter $(objtree)/%, $(__clean-files)))
60
61# same as clean-files
62
63__clean-dirs    := $(wildcard                                               \
64		   $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs)))    \
65		   $(filter $(objtree)/%, $(clean-dirs)))
66
67# ==========================================================================
68
69quiet_cmd_clean    = CLEAN   $(obj)
70      cmd_clean    = rm -f $(__clean-files)
71quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
72      cmd_cleandir = rm -rf $(__clean-dirs)
73
74
75__clean: $(subdir-ymn)
76ifneq ($(strip $(__clean-files)),)
77	+$(call cmd,clean)
78endif
79ifneq ($(strip $(__clean-dirs)),)
80	+$(call cmd,cleandir)
81endif
82	@:
83
84
85# ===========================================================================
86# Generic stuff
87# ===========================================================================
88
89# Descending
90# ---------------------------------------------------------------------------
91
92PHONY += $(subdir-ymn)
93$(subdir-ymn):
94	$(Q)$(MAKE) $(clean)=$@
95
96# Declare the contents of the .PHONY variable as phony.  We keep that
97# information in a variable se we can use it in if_changed and friends.
98
99.PHONY: $(PHONY)
100