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