xref: /openbmc/linux/scripts/Makefile.clean (revision e2c75e76) 
1# SPDX-License-Identifier: GPL-2.0
2# ==========================================================================
3# Cleaning up
4# ==========================================================================
5
6src := $(obj)
7
8PHONY := __clean
9__clean:
10
11include scripts/Kbuild.include
12
13# The filename Kbuild has precedence over Makefile
14kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
15include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
16
17# Figure out what we need to build from the various variables
18# ==========================================================================
19
20__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
21subdir-y	+= $(__subdir-y)
22__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
23subdir-m	+= $(__subdir-m)
24__subdir-	:= $(patsubst %/,%,$(filter %/, $(obj-)))
25subdir-		+= $(__subdir-)
26
27# Subdirectories we need to descend into
28
29subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
30subdir-ymn      := $(sort $(subdir-ym) $(subdir-))
31
32# Add subdir path
33
34subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
35
36# build a list of files to remove, usually relative to the current
37# directory
38
39__clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
40		   $(always) $(targets) $(clean-files)   \
41		   $(host-progs)                         \
42		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \
43		   $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \
44		   $(hostcxxlibs-y) $(hostcxxlibs-m)
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
77	@:
78
79
80# ===========================================================================
81# Generic stuff
82# ===========================================================================
83
84# Descending
85# ---------------------------------------------------------------------------
86
87PHONY += $(subdir-ymn)
88$(subdir-ymn):
89	$(Q)$(MAKE) $(clean)=$@
90
91# Declare the contents of the .PHONY variable as phony.  We keep that
92# information in a variable se we can use it in if_changed and friends.
93
94.PHONY: $(PHONY)
95