xref: /openbmc/u-boot/scripts/Makefile.clean (revision 3e972cb9) 
1# ==========================================================================
2# Cleaning up
3# ==========================================================================
4
5src := $(obj)
6
7PHONY := __clean
8__clean:
9
10# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
11# Usage:
12# $(Q)$(MAKE) $(clean)=dir
13clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
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-n	:= $(patsubst %/,%,$(filter %/, $(obj-n)))
27subdir-n	+= $(__subdir-n)
28__subdir-	:= $(patsubst %/,%,$(filter %/, $(obj-)))
29subdir-		+= $(__subdir-)
30
31# Subdirectories we need to descend into
32
33subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
34subdir-ymn      := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
35
36# Add subdir path
37
38subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
39
40# Temporal work-around for U-Boot
41
42subdir-ymn	:= $(foreach f, $(subdir-ymn), \
43				$(if $(wildcard $(srctree)/$f/Makefile),$f))
44
45# build a list of files to remove, usually relative to the current
46# directory
47
48__clean-files	:= $(extra-y) $(extra-m) $(extra-)       \
49		   $(always) $(targets) $(clean-files)   \
50		   $(host-progs)                         \
51		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
52
53__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
54
55# as clean-files is given relative to the current directory, this adds
56# a $(obj) prefix, except for absolute paths
57
58__clean-files   := $(wildcard                                               \
59                   $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
60		   $(filter /%, $(__clean-files)))
61
62# as clean-dirs is given relative to the current directory, this adds
63# a $(obj) prefix, except for absolute paths
64
65__clean-dirs    := $(wildcard                                               \
66                   $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs)))    \
67		   $(filter /%, $(clean-dirs)))
68
69# ==========================================================================
70
71quiet_cmd_clean    = CLEAN   $(obj)
72      cmd_clean    = rm -f $(__clean-files)
73quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
74      cmd_cleandir = rm -rf $(__clean-dirs)
75
76
77__clean: $(subdir-ymn)
78ifneq ($(strip $(__clean-files)),)
79	+$(call cmd,clean)
80endif
81ifneq ($(strip $(__clean-dirs)),)
82	+$(call cmd,cleandir)
83endif
84ifneq ($(strip $(clean-rule)),)
85	+$(clean-rule)
86endif
87	@:
88
89
90# ===========================================================================
91# Generic stuff
92# ===========================================================================
93
94# Descending
95# ---------------------------------------------------------------------------
96
97PHONY += $(subdir-ymn)
98$(subdir-ymn):
99	$(Q)$(MAKE) $(clean)=$@
100
101# If quiet is set, only print short version of command
102
103cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
104
105
106# Declare the contents of the .PHONY variable as phony.  We keep that
107# information in a variable se we can use it in if_changed and friends.
108
109.PHONY: $(PHONY)
110