mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 06:35:42 +00:00
9dfe3dbc7b
Before making top-level traverse js/src moz.build files, there was a need to distinguish between top-level traversing e.g. top-level moz.build or config/moz.build and js/src traversing them. With a single traversal of both moz.build sets, we now only need to distinguish between js standalone builds and gecko builds. There is still, however, a need to distinguish between top-level vs. js/src configure runs on gecko builds to make them subconfigure icu and libffi from top-level instead of js/src in js standalone builds, or when choosing to make js/src's config.status do something when run or not.
240 lines
8.5 KiB
Makefile
240 lines
8.5 KiB
Makefile
# 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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ifndef INCLUDED_RULES_MK
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include $(topsrcdir)/config/rules.mk
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endif
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# The traditional model of directory traversal with make is as follows:
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# make -C foo
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# Entering foo
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# make -C bar
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# Entering foo/bar
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# make -C baz
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# Entering foo/baz
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# make -C qux
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# Entering qux
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#
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# Pseudo derecurse transforms the above into:
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# make -C foo
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# make -C foo/bar
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# make -C foo/baz
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# make -C qux
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# MOZ_PSEUDO_DERECURSE can have values other than 1.
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ifeq (1_.,$(if $(MOZ_PSEUDO_DERECURSE),1)_$(DEPTH))
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include root.mk
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# Disable build status for mach in top directories without TIERS.
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# In practice this disables it when recursing under js/src, which confuses mach.
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ifndef TIERS
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BUILDSTATUS =
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endif
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# Main rules (export, compile, binaries, libs and tools) call recurse_* rules.
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# This wrapping is only really useful for build status.
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compile binaries libs export tools::
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$(call BUILDSTATUS,TIER_START $@ $($@_subtiers))
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+$(MAKE) recurse_$@
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$(call BUILDSTATUS,TIER_FINISH $@)
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# Carefully avoid $(eval) type of rule generation, which makes pymake slower
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# than necessary.
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# Get current tier and corresponding subtiers from the data in root.mk.
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CURRENT_TIER := $(filter $(foreach tier,compile binaries libs export tools,recurse_$(tier) $(tier)-deps),$(MAKECMDGOALS))
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ifneq (,$(filter-out 0 1,$(words $(CURRENT_TIER))))
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$(error $(CURRENT_TIER) not supported on the same make command line)
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endif
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CURRENT_TIER := $(subst recurse_,,$(CURRENT_TIER:-deps=))
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CURRENT_SUBTIERS := $($(CURRENT_TIER)_subtiers)
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# The rules here are doing directory traversal, so we don't want further
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# recursion to happen when running make -C subdir $tier. But some make files
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# further call make -C something else, and sometimes expect recursion to
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# happen in that case (see browser/metro/locales/Makefile.in for example).
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# Conveniently, every invocation of make increases MAKELEVEL, so only stop
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# recursion from happening at current MAKELEVEL + 1.
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ifdef CURRENT_TIER
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ifeq (0,$(MAKELEVEL))
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export NO_RECURSE_MAKELEVEL=1
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else
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export NO_RECURSE_MAKELEVEL=$(word $(MAKELEVEL),2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20)
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endif
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endif
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# Get all directories traversed for all subtiers in the current tier, or use
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# directly the $(*_dirs) variables available in root.mk when there is no
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# TIERS (like for js/src).
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TIER_DIRS = $(or $($(1)_dirs),$(foreach subtier,$($(1)_subtiers),$($(1)_subtier_$(subtier))))
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CURRENT_DIRS := $(call TIER_DIRS,$(CURRENT_TIER))
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ifneq (,$(filter binaries libs,$(CURRENT_TIER)))
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WANT_STAMPS = 1
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STAMP_TOUCH = $(TOUCH) $(@D)/binaries
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endif
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# Subtier delimiter rules
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$(addprefix subtiers/,$(addsuffix _start/$(CURRENT_TIER),$(CURRENT_SUBTIERS))): subtiers/%_start/$(CURRENT_TIER): $(if $(WANT_STAMPS),$(call mkdir_deps,subtiers/%_start))
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$(call BUILDSTATUS,SUBTIER_START $(CURRENT_TIER) $* $(if $(BUG_915535_FIXED),$($(CURRENT_TIER)_subtier_$*)))
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@$(STAMP_TOUCH)
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$(addprefix subtiers/,$(addsuffix _finish/$(CURRENT_TIER),$(CURRENT_SUBTIERS))): subtiers/%_finish/$(CURRENT_TIER): $(if $(WANT_STAMPS),$(call mkdir_deps,subtiers/%_finish))
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$(call BUILDSTATUS,SUBTIER_FINISH $(CURRENT_TIER) $*)
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@$(STAMP_TOUCH)
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$(addprefix subtiers/,$(addsuffix /$(CURRENT_TIER),$(CURRENT_SUBTIERS))): %/$(CURRENT_TIER): $(if $(WANT_STAMPS),$(call mkdir_deps,%))
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@$(STAMP_TOUCH)
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GARBAGE_DIRS += subtiers
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# Recursion rule for all directories traversed for all subtiers in the
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# current tier.
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# root.mk defines subtier_of_* variables, that map a normalized subdir path to
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# a subtier name (e.g. subtier_of_memory_jemalloc = base)
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$(addsuffix /$(CURRENT_TIER),$(CURRENT_DIRS)): %/$(CURRENT_TIER):
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ifdef BUG_915535_FIXED
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$(call BUILDSTATUS,TIERDIR_START $(CURRENT_TIER) $(subtier_of_$(subst /,_,$*)) $*)
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endif
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+@$(MAKE) -C $* $(if $(filter $*,$(tier_$(subtier_of_$(subst /,_,$*))_staticdirs)),,$(CURRENT_TIER))
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# Ensure existing stamps are up-to-date, but don't create one if submake didn't create one.
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$(if $(wildcard $@),@$(STAMP_TOUCH))
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ifdef BUG_915535_FIXED
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$(call BUILDSTATUS,TIERDIR_FINISH $(CURRENT_TIER) $(subtier_of_$(subst /,_,$*)) $*)
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endif
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# Dummy rules for possibly inexisting dependencies for the above tier targets
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$(addsuffix /Makefile,$(CURRENT_DIRS)) $(addsuffix /backend.mk,$(CURRENT_DIRS)):
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# The export tier requires nsinstall, which is built from config. So every
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# subdirectory traversal needs to happen after traversing config.
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ifeq ($(CURRENT_TIER),export)
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$(addsuffix /$(CURRENT_TIER),$(filter-out config,$(CURRENT_DIRS))): config/$(CURRENT_TIER)
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endif
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ifdef COMPILE_ENVIRONMENT
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ifneq (,$(filter libs binaries,$(CURRENT_TIER)))
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# When doing a "libs" build, target_libs.mk ensures the interesting dependency data
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# is available in the "binaries" stamp. Once recursion is done, aggregate all that
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# dependency info so that stamps depend on relevant files and relevant other stamps.
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# When doing a "binaries" build, the aggregate dependency file and those stamps are
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# used and allow to skip recursing directories where changes are not going to require
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# rebuild. A few directories, however, are still traversed all the time, mostly, the
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# gyp managed ones and js/src.
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# A few things that are not traversed by a "binaries" build, but should, in an ideal
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# world, are nspr, nss, icu and ffi.
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recurse_$(CURRENT_TIER):
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@$(MAKE) binaries-deps
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# Creating binaries-deps.mk directly would make us build it twice: once when beginning
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# the build because of the include, and once at the end because of the stamps.
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binaries-deps: $(addsuffix /binaries,$(CURRENT_DIRS))
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@$(call py_action,link_deps,-o $@.mk --group-by-depfile --topsrcdir $(topsrcdir) --topobjdir $(DEPTH) --dist $(DIST) --guard $(addprefix ',$(addsuffix ',$^)))
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@$(TOUCH) $@
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ifeq (recurse_binaries,$(MAKECMDGOALS))
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$(call include_deps,binaries-deps.mk)
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endif
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endif
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DIST_GARBAGE += binaries-deps.mk binaries-deps
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endif
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else
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# Don't recurse if MAKELEVEL is NO_RECURSE_MAKELEVEL as defined above
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ifeq ($(NO_RECURSE_MAKELEVEL),$(MAKELEVEL))
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compile binaries libs export tools::
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else
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#########################
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# Tier traversal handling
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#########################
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ifdef TIERS
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libs export tools::
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$(call BUILDSTATUS,TIER_START $@ $(filter-out $(if $(filter export,$@),,precompile),$(TIERS)))
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$(foreach tier,$(TIERS), $(if $(filter-out libs_precompile tools_precompile,$@_$(tier)), \
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$(call BUILDSTATUS,SUBTIER_START $@ $(tier) $(if $(filter libs,$@),$(tier_$(tier)_staticdirs)) $(tier_$(tier)_dirs)) \
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$(if $(filter libs,$@),$(foreach dir, $(tier_$(tier)_staticdirs), $(call TIER_DIR_SUBMAKE,$@,$(tier),$(dir),,1))) \
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$(foreach dir, $(tier_$(tier)_dirs), $(call TIER_DIR_SUBMAKE,$@,$(tier),$(dir),$@)) \
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$(call BUILDSTATUS,SUBTIER_FINISH $@ $(tier))))
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$(call BUILDSTATUS,TIER_FINISH $@)
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else
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define CREATE_SUBTIER_TRAVERSAL_RULE
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PARALLEL_DIRS_$(1) = $$(addsuffix _$(1),$$(PARALLEL_DIRS))
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.PHONY: $(1) $$(PARALLEL_DIRS_$(1))
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ifdef PARALLEL_DIRS
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$$(PARALLEL_DIRS_$(1)): %_$(1): %/Makefile
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+@$$(call SUBMAKE,$(1),$$*)
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endif
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$(1):: $$(SUBMAKEFILES)
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ifdef PARALLEL_DIRS
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+@$(MAKE) $$(PARALLEL_DIRS_$(1))
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endif
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$$(LOOP_OVER_DIRS)
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endef
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$(foreach subtier,export compile binaries libs tools,$(eval $(call CREATE_SUBTIER_TRAVERSAL_RULE,$(subtier))))
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tools export:: $(SUBMAKEFILES)
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$(LOOP_OVER_TOOL_DIRS)
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endif # ifdef TIERS
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endif # ifeq ($(NO_RECURSE_MAKELEVEL),$(MAKELEVEL))
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endif # ifeq (1_.,$(MOZ_PSEUDO_DERECURSE)_$(DEPTH))
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ifdef MOZ_PSEUDO_DERECURSE
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ifeq (.,$(DEPTH))
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# top-level directories
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ifndef JS_STANDALONE
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# Only define recurse_targets for js, when it is built as part of gecko.
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recurse_targets := $(addsuffix /binaries,$(call TIER_DIRS,binaries))
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# we want to adjust paths for js/src.
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want_abspaths = 1
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endif
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endif
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ifdef COMPILE_ENVIRONMENT
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# Aggregate all dependency files relevant to a binaries build except in
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# the mozilla top-level directory.
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ifneq (_.,$(recurse_targets)_$(DEPTH))
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ALL_DEP_FILES := \
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$(BINARIES_PP) \
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$(addsuffix .pp,$(addprefix $(MDDEPDIR)/,$(sort \
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$(TARGETS) \
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$(filter-out $(SOBJS) $(ASOBJS) $(EXCLUDED_OBJS),$(OBJ_TARGETS)) \
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))) \
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$(recurse_targets) \
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$(NULL)
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endif
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binaries libs:: $(TARGETS) $(BINARIES_PP)
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ifneq (_.,$(recurse_targets)_$(DEPTH))
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@$(if $(or $(recurse_targets),$^),$(call py_action,link_deps,-o binaries --group-all $(if $(want_abspaths),--abspaths )--topsrcdir $(topsrcdir) --topobjdir $(DEPTH) --dist $(DIST) $(ALL_DEP_FILES)))
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endif
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endif
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endif # ifdef MOZ_PSEUDO_DERECURSE
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recurse:
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@$(RECURSED_COMMAND)
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$(LOOP_OVER_PARALLEL_DIRS)
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$(LOOP_OVER_DIRS)
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$(LOOP_OVER_TOOL_DIRS)
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