The Tor Browser: config/makefiles/autotargets.mk@925c144e1f1f

     1 # -*- makefile -*-

     2 # vim:set ts=8 sw=8 sts=8 noet:

3 #

     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/.

7 #

     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 ###########################################################################

    18 MKDIR ?= mkdir -p

    19 TOUCH ?= touch

    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 /

    41 slash_strip = \

    42   $(strip \

    43     $(subst <--[**]-->,$(space),\

    44 	$(call _slashSqueeze,\

    45     $(subst $(space),<--[**]-->,$(1))\

    46   )))

    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 #######################

    55 ##---]  TARGETS  [---##

    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

    68 .mkdir.done:

    69 	@echo 'WARNING: $(MKDIR) -dot- requested by $(MAKE) -C $(CURDIR) $(MAKECMDGOALS)'

    70 	@$(TOUCH) -t 198001030000 '$@'

    72 INCLUDED_AUTOTARGETS_MK = 1

    73 endif #}

    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)

    81   GARBAGE_DIRS        +=$(GENERATED_DIRS)

    82 endif

    84 #################################################################

    85 # One ring/dep to rule them all:

    86 #   config/rules.mk::all target is available by default

    87 #   Add $(AUTO_DEPS) as an explicit target dependency when needed.

    88 #################################################################

    90 AUTO_DEPS +=$(GENERATED_DIRS_DEPS)

    91 AUTO_DEPS := $(strip $(sort $(AUTO_DEPS)))

    93 # Complain loudly if deps have not loaded so getargv != $(NULL)

    94 $(call requiredfunction,getargv)

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