зеркало из https://github.com/mozilla/gecko-dev.git
106 строки
3.8 KiB
Makefile
106 строки
3.8 KiB
Makefile
# -*- makefile -*-
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# vim:set ts=8 sw=8 sts=8 noet:
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this file,
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# You can obtain one at http://mozilla.org/MPL/2.0/.
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#
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ifndef INCLUDED_AUTOTARGETS_MK #{
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# Conditional does not wrap the entire file so multiple
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# includes will be able to accumulate dependencies.
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###########################################################################
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# AUTO_DEPS - A list of deps/targets drived from other macros.
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###########################################################################
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MKDIR ?= mkdir -p
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TOUCH ?= touch
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# declare for local use, rules.mk may not have been loaded
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space = $(NULL) $(NULL)
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# Deps will be considered intermediate when used as a pre-requisite for
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# wildcard targets. Inhibit their removal, mkdir -p is a standalone op.
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.PRECIOUS: %/.mkdir.done
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#########################
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##---] FUNCTIONS [---##
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#########################
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# Squeeze can be overzealous, restore root for abspath
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getPathPrefix =$(if $(filter /%,$(1)),/)
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# Squeeze '//' from the path, easily created by string functions
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_slashSqueeze =$(foreach val,$(getargv),$(call getPathPrefix,$(val))$(subst $(space),/,$(strip $(subst /,$(space),$(val)))))
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# Squeeze extraneous directory slashes from the path
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# o protect embedded spaces within the path
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# o replace //+ sequences with /
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slash_strip = \
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$(strip \
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$(subst <--[**]-->,$(space),\
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$(call _slashSqueeze,\
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$(subst $(space),<--[**]-->,$(1))\
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)))
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# Extract directory path from a dependency file.
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mkdir_stem =$(foreach val,$(getargv),$(subst /.mkdir.done,$(NULL),$(val)))
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# Function can be called by other functions to expand un-expanded make vars.
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# := functionality in call(able) function form
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expand = $(eval func-expand-$(1) := $($(1)))$(func-expand-$(1))
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## Generate timestamp file for threadsafe directory creation
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mkdir_deps = \
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$(strip \
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$(foreach var,$(getargv),\
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$(foreach dir,$(call expand,var),\
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$(call slash_strip,$(call expand,dir)/.mkdir.done) \
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)))
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#######################
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##---] TARGETS [---##
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#######################
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%/.mkdir.done: # mkdir -p -p => mkdir -p
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$(subst $(space)-p,$(null),$(MKDIR)) -p "$(dir $@)"
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# Make the timestamp old enough for not being a problem with symbolic links
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# targets depending on it. Use Jan 3, 1980 to accomodate any timezone where
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# 198001010000 would translate to something older than FAT epoch.
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@$(TOUCH) -t 198001030000 "$@"
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# A handful of makefiles are attempting "mkdir dot".
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# tbpl/valgrind builds are using this target
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# https://bugzilla.mozilla.org/show_bug.cgi?id=837754
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.mkdir.done:
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@echo "WARNING: $(MKDIR) -dot- requested by $(MAKE) -C $(CURDIR) $(MAKECMDGOALS)"
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@$(TOUCH) -t 198001030000 "$@"
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INCLUDED_AUTOTARGETS_MK = 1
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endif #}
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###########################################################################
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## GENERATED_DIR(_\S+)? directory deps
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## GENERATED_DIRS_{export,lib,tools} = foo # target specific deps
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###########################################################################
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GENERATED_DIRS += $(foreach tgt,$(MAKECMDGOALS),$(value GENERATED_DIRS_$(tgt)))
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GENERATED_DIRS := $(call expand,GENERATED_DIRS)
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GENERATED_DIRS := $(strip $(sort $(GENERATED_DIRS)))
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GARBAGE_DIRS += $(GENERATED_DIRS)
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# directory deps are timestamp based to only create when needed
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AUTO_DEPS += $(if $(value GENERATED_DIRS),$(call mkdir_deps,GENERATED_DIRS))
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#################################################################
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# One ring/dep to rule them all:
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# config/rules.mk::all target is available by default
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# Add $(AUTO_DEPS) as an explicit target dependency when needed.
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#################################################################
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AUTO_DEPS := $(strip $(sort $(AUTO_DEPS)))
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# Complain loudly if deps have not loaded so getargv != $(NULL)
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$(call requiredfunction,getargv)
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