xref: /openbmc/u-boot/scripts/Makefile.clean (revision 3f41ffe4) 
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), $(if $(wildcard $f/Makefile),$f))
43
44# build a list of files to remove, usually relative to the current
45# directory
46
47__clean-files	:= $(extra-y) $(always)                  \
48		   $(targets) $(clean-files)             \
49		   $(host-progs)                         \
50		   $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
51
52__clean-files   := $(filter-out $(no-clean-files), $(__clean-files))
53
54# as clean-files is given relative to the current directory, this adds
55# a $(obj) prefix, except for absolute paths
56
57__clean-files   := $(wildcard                                               \
58                   $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
59		   $(filter /%, $(__clean-files)))
60
61# as clean-dirs is given relative to the current directory, this adds
62# a $(obj) prefix, except for absolute paths
63
64__clean-dirs    := $(wildcard                                               \
65                   $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs)))    \
66		   $(filter /%, $(clean-dirs)))
67
68# ==========================================================================
69
70quiet_cmd_clean    = CLEAN   $(obj)
71      cmd_clean    = rm -f $(__clean-files)
72quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
73      cmd_cleandir = rm -rf $(__clean-dirs)
74
75
76__clean: $(subdir-ymn)
77ifneq ($(strip $(__clean-files)),)
78	+$(call cmd,clean)
79endif
80ifneq ($(strip $(__clean-dirs)),)
81	+$(call cmd,cleandir)
82endif
83ifneq ($(strip $(clean-rule)),)
84	+$(clean-rule)
85endif
86	@:
87
88
89# ===========================================================================
90# Generic stuff
91# ===========================================================================
92
93# Descending
94# ---------------------------------------------------------------------------
95
96PHONY += $(subdir-ymn)
97$(subdir-ymn):
98	$(Q)$(MAKE) $(clean)=$@
99
100# If quiet is set, only print short version of command
101
102cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
103
104
105# Declare the contents of the .PHONY variable as phony.  We keep that
106# information in a variable se we can use it in if_changed and friends.
107
108.PHONY: $(PHONY)
109