2 # vim:set ts=8 sw=8 sts=8 noet:
4 # This Source Code Form is subject to the terms of the Mozilla Public
5 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
6 # You can obtain one at http://mozilla.org/MPL/2.0/.
9 ifndef INCLUDED_AUTOTARGETS_MK
#{
11 # Conditional does not wrap the entire file so multiple
12 # includes will be able to accumulate dependencies.
14 ###########################################################################
15 # AUTO_DEPS - A list of deps/targets drived from other macros.
16 ###########################################################################
21 # declare for local use, rules.mk may not have been loaded
22 space
= $(NULL
) $(NULL
)
24 # Deps will be considered intermediate when used as a pre-requisite for
25 # wildcard targets. Inhibit their removal, mkdir -p is a standalone op.
26 .PRECIOUS
: %/.mkdir.done
28 #########################
29 ##---] FUNCTIONS [---##
30 #########################
32 # Squeeze can be overzealous, restore root for abspath
33 getPathPrefix
=$(if
$(filter /%,$(1)),/)
35 # Squeeze '//' from the path, easily created by string functions
36 _slashSqueeze
=$(foreach val
,$(getargv
),$(call getPathPrefix
,$(val
))$(subst $(space
),/,$(strip $(subst /,$(space
),$(val
)))))
38 # Squeeze extraneous directory slashes from the path
39 # o protect embedded spaces within the path
40 # o replace //+ sequences with /
43 $(subst <--[**]-->,$(space
),\
44 $(call _slashSqueeze
,\
45 $(subst $(space
),<--[**]-->,$(1))\
48 # Extract directory path from a dependency file.
49 mkdir_stem
=$(foreach val
,$(getargv
),$(subst /.mkdir.done
,$(NULL
),$(val
)))
51 ## Generate timestamp file for threadsafe directory creation
52 mkdir_deps
=$(foreach dir,$(getargv
),$(call slash_strip
,$(dir)/.mkdir.done
))
54 #######################
56 #######################
58 %/.mkdir.done
: # mkdir -p -p => mkdir -p
59 $(subst $(space
)-p
,$(null
),$(MKDIR
)) -p
'$(dir $@)'
60 # Make the timestamp old enough for not being a problem with symbolic links
61 # targets depending on it. Use Jan 3, 1980 to accomodate any timezone where
62 # 198001010000 would translate to something older than FAT epoch.
63 @
$(TOUCH
) -t
198001030000 '$@'
65 # A handful of makefiles are attempting "mkdir dot".
66 # tbpl/valgrind builds are using this target
67 # https://bugzilla.mozilla.org/show_bug.cgi?id=837754
69 @echo
'WARNING: $(MKDIR) -dot- requested by $(MAKE) -C $(CURDIR) $(MAKECMDGOALS)'
70 @
$(TOUCH
) -t
198001030000 '$@'
72 INCLUDED_AUTOTARGETS_MK
= 1
76 ## Accumulate deps and cleanup
77 ifneq (,$(GENERATED_DIRS
))
78 GENERATED_DIRS
:= $(strip $(sort $(GENERATED_DIRS
)))
79 tmpauto
:=$(call mkdir_deps
,GENERATED_DIRS
)
80 GENERATED_DIRS_DEPS
+=$(tmpauto
)
83 #################################################################
84 # One ring/dep to rule them all:
85 # config/rules.mk::all target is available by default
86 # Add $(AUTO_DEPS) as an explicit target dependency when needed.
87 #################################################################
89 AUTO_DEPS
+=$(GENERATED_DIRS_DEPS
)
90 AUTO_DEPS
:= $(strip $(sort $(AUTO_DEPS
)))
92 # Complain loudly if deps have not loaded so getargv != $(NULL)
93 $(call requiredfunction
,getargv
)