michael@0: # This Source Code Form is subject to the terms of the Mozilla Public
michael@0: # License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0: # You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: ifndef INCLUDED_RULES_MK
michael@0: include $(topsrcdir)/config/rules.mk
michael@0: endif
michael@0: 
michael@0: # The traditional model of directory traversal with make is as follows:
michael@0: #   make -C foo
michael@0: #     Entering foo
michael@0: #     make -C bar
michael@0: #       Entering foo/bar
michael@0: #     make -C baz
michael@0: #       Entering foo/baz
michael@0: #   make -C qux
michael@0: #     Entering qux
michael@0: #
michael@0: # Pseudo derecurse transforms the above into:
michael@0: #   make -C foo
michael@0: #   make -C foo/bar
michael@0: #   make -C foo/baz
michael@0: #   make -C qux
michael@0: 
michael@0: # MOZ_PSEUDO_DERECURSE can have values other than 1.
michael@0: ifeq (1_.,$(if $(MOZ_PSEUDO_DERECURSE),1)_$(DEPTH))
michael@0: 
michael@0: include root.mk
michael@0: 
michael@0: # Disable build status for mach in top directories without TIERS.
michael@0: # In practice this disables it when recursing under js/src, which confuses mach.
michael@0: ifndef TIERS
michael@0: BUILDSTATUS =
michael@0: endif
michael@0: 
michael@0: # Main rules (export, compile, binaries, libs and tools) call recurse_* rules.
michael@0: # This wrapping is only really useful for build status.
michael@0: compile binaries libs export tools::
michael@0: 	$(call BUILDSTATUS,TIER_START $@)
michael@0: 	+$(MAKE) recurse_$@
michael@0: 	$(call BUILDSTATUS,TIER_FINISH $@)
michael@0: 
michael@0: # Carefully avoid $(eval) type of rule generation, which makes pymake slower
michael@0: # than necessary.
michael@0: # Get current tier and corresponding subtiers from the data in root.mk.
michael@0: CURRENT_TIER := $(filter $(foreach tier,compile binaries libs export tools,recurse_$(tier) $(tier)-deps),$(MAKECMDGOALS))
michael@0: ifneq (,$(filter-out 0 1,$(words $(CURRENT_TIER))))
michael@0: $(error $(CURRENT_TIER) not supported on the same make command line)
michael@0: endif
michael@0: CURRENT_TIER := $(subst recurse_,,$(CURRENT_TIER:-deps=))
michael@0: CURRENT_SUBTIERS := $($(CURRENT_TIER)_subtiers)
michael@0: 
michael@0: # The rules here are doing directory traversal, so we don't want further
michael@0: # recursion to happen when running make -C subdir $tier. But some make files
michael@0: # further call make -C something else, and sometimes expect recursion to
michael@0: # happen in that case (see browser/metro/locales/Makefile.in for example).
michael@0: # Conveniently, every invocation of make increases MAKELEVEL, so only stop
michael@0: # recursion from happening at current MAKELEVEL + 1.
michael@0: ifdef CURRENT_TIER
michael@0: ifeq (0,$(MAKELEVEL))
michael@0: export NO_RECURSE_MAKELEVEL=1
michael@0: else
michael@0: 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)
michael@0: endif
michael@0: endif
michael@0: 
michael@0: # Get all directories traversed for all subtiers in the current tier, or use
michael@0: # directly the $(*_dirs) variables available in root.mk when there is no
michael@0: # TIERS (like for js/src).
michael@0: TIER_DIRS = $(or $($(1)_dirs),$(foreach subtier,$($(1)_subtiers),$($(1)_subtier_$(subtier))))
michael@0: CURRENT_DIRS := $(call TIER_DIRS,$(CURRENT_TIER))
michael@0: 
michael@0: ifneq (,$(filter binaries libs,$(CURRENT_TIER)))
michael@0: WANT_STAMPS = 1
michael@0: STAMP_TOUCH = $(TOUCH) $(@D)/binaries
michael@0: endif
michael@0: 
michael@0: # Subtier delimiter rules
michael@0: $(addprefix subtiers/,$(addsuffix _start/$(CURRENT_TIER),$(CURRENT_SUBTIERS))): subtiers/%_start/$(CURRENT_TIER): $(if $(WANT_STAMPS),$(call mkdir_deps,subtiers/%_start))
michael@0: 	@$(STAMP_TOUCH)
michael@0: 
michael@0: $(addprefix subtiers/,$(addsuffix _finish/$(CURRENT_TIER),$(CURRENT_SUBTIERS))): subtiers/%_finish/$(CURRENT_TIER): $(if $(WANT_STAMPS),$(call mkdir_deps,subtiers/%_finish))
michael@0: 	@$(STAMP_TOUCH)
michael@0: 
michael@0: $(addprefix subtiers/,$(addsuffix /$(CURRENT_TIER),$(CURRENT_SUBTIERS))): %/$(CURRENT_TIER): $(if $(WANT_STAMPS),$(call mkdir_deps,%))
michael@0: 	@$(STAMP_TOUCH)
michael@0: 
michael@0: GARBAGE_DIRS += subtiers
michael@0: 
michael@0: # Recursion rule for all directories traversed for all subtiers in the
michael@0: # current tier.
michael@0: # root.mk defines subtier_of_* variables, that map a normalized subdir path to
michael@0: # a subtier name (e.g. subtier_of_memory_jemalloc = base)
michael@0: $(addsuffix /$(CURRENT_TIER),$(CURRENT_DIRS)): %/$(CURRENT_TIER):
michael@0: 	+@$(MAKE) -C $* $(if $(filter $*,$(tier_$(subtier_of_$(subst /,_,$*))_staticdirs)),,$(CURRENT_TIER))
michael@0: # Ensure existing stamps are up-to-date, but don't create one if submake didn't create one.
michael@0: 	$(if $(wildcard $@),@$(STAMP_TOUCH))
michael@0: 
michael@0: # Dummy rules for possibly inexisting dependencies for the above tier targets
michael@0: $(addsuffix /Makefile,$(CURRENT_DIRS)) $(addsuffix /backend.mk,$(CURRENT_DIRS)):
michael@0: 
michael@0: # The export tier requires nsinstall, which is built from config. So every
michael@0: # subdirectory traversal needs to happen after traversing config.
michael@0: ifeq ($(CURRENT_TIER),export)
michael@0: $(addsuffix /$(CURRENT_TIER),$(filter-out config,$(CURRENT_DIRS))): config/$(CURRENT_TIER)
michael@0: endif
michael@0: 
michael@0: ifdef COMPILE_ENVIRONMENT
michael@0: ifneq (,$(filter libs binaries,$(CURRENT_TIER)))
michael@0: # When doing a "libs" build, target_libs.mk ensures the interesting dependency data
michael@0: # is available in the "binaries" stamp. Once recursion is done, aggregate all that
michael@0: # dependency info so that stamps depend on relevant files and relevant other stamps.
michael@0: # When doing a "binaries" build, the aggregate dependency file and those stamps are
michael@0: # used and allow to skip recursing directories where changes are not going to require
michael@0: # rebuild. A few directories, however, are still traversed all the time, mostly, the
michael@0: # gyp managed ones and js/src.
michael@0: # A few things that are not traversed by a "binaries" build, but should, in an ideal
michael@0: # world, are nspr, nss, icu and ffi.
michael@0: recurse_$(CURRENT_TIER):
michael@0: 	@$(MAKE) binaries-deps
michael@0: 
michael@0: # Creating binaries-deps.mk directly would make us build it twice: once when beginning
michael@0: # the build because of the include, and once at the end because of the stamps.
michael@0: binaries-deps: $(addsuffix /binaries,$(CURRENT_DIRS))
michael@0: 	@$(call py_action,link_deps,-o $@.mk --group-by-depfile --topsrcdir $(topsrcdir) --topobjdir $(DEPTH) --dist $(DIST) --guard $(addprefix ',$(addsuffix ',$^)))
michael@0: 	@$(TOUCH) $@
michael@0: 
michael@0: ifeq (recurse_binaries,$(MAKECMDGOALS))
michael@0: $(call include_deps,binaries-deps.mk)
michael@0: endif
michael@0: 
michael@0: endif
michael@0: 
michael@0: DIST_GARBAGE += binaries-deps.mk binaries-deps
michael@0: 
michael@0: endif
michael@0: 
michael@0: else
michael@0: 
michael@0: # Don't recurse if MAKELEVEL is NO_RECURSE_MAKELEVEL as defined above
michael@0: ifeq ($(NO_RECURSE_MAKELEVEL),$(MAKELEVEL))
michael@0: 
michael@0: compile binaries libs export tools::
michael@0: 
michael@0: else
michael@0: #########################
michael@0: # Tier traversal handling
michael@0: #########################
michael@0: 
michael@0: ifdef TIERS
michael@0: 
michael@0: libs export tools::
michael@0: 	$(call BUILDSTATUS,TIER_START $@)
michael@0: 	$(foreach tier,$(TIERS), $(if $(filter-out libs_precompile tools_precompile,$@_$(tier)), \
michael@0: 		$(if $(filter libs,$@),$(foreach dir, $(tier_$(tier)_staticdirs), $(call TIER_DIR_SUBMAKE,$@,$(tier),$(dir),,1))) \
michael@0: 		$(foreach dir, $(tier_$(tier)_dirs), $(call TIER_DIR_SUBMAKE,$@,$(tier),$(dir),$@))))
michael@0: 	$(call BUILDSTATUS,TIER_FINISH $@)
michael@0: 
michael@0: else
michael@0: 
michael@0: define CREATE_SUBTIER_TRAVERSAL_RULE
michael@0: PARALLEL_DIRS_$(1) = $$(addsuffix _$(1),$$(PARALLEL_DIRS))
michael@0: 
michael@0: .PHONY: $(1) $$(PARALLEL_DIRS_$(1))
michael@0: 
michael@0: ifdef PARALLEL_DIRS
michael@0: $$(PARALLEL_DIRS_$(1)): %_$(1): %/Makefile
michael@0: 	+@$$(call SUBMAKE,$(1),$$*)
michael@0: endif
michael@0: 
michael@0: $(1):: $$(SUBMAKEFILES)
michael@0: ifdef PARALLEL_DIRS
michael@0: 	+@$(MAKE) $$(PARALLEL_DIRS_$(1))
michael@0: endif
michael@0: 	$$(LOOP_OVER_DIRS)
michael@0: 
michael@0: endef
michael@0: 
michael@0: $(foreach subtier,export compile binaries libs tools,$(eval $(call CREATE_SUBTIER_TRAVERSAL_RULE,$(subtier))))
michael@0: 
michael@0: tools export:: $(SUBMAKEFILES)
michael@0: 	$(LOOP_OVER_TOOL_DIRS)
michael@0: 
michael@0: endif # ifdef TIERS
michael@0: 
michael@0: endif # ifeq ($(NO_RECURSE_MAKELEVEL),$(MAKELEVEL))
michael@0: 
michael@0: endif # ifeq (1_.,$(MOZ_PSEUDO_DERECURSE)_$(DEPTH))
michael@0: 
michael@0: ifdef MOZ_PSEUDO_DERECURSE
michael@0: 
michael@0: ifdef COMPILE_ENVIRONMENT
michael@0: 
michael@0: # Aggregate all dependency files relevant to a binaries build except in
michael@0: # the mozilla top-level directory.
michael@0: ifneq (.,$(DEPTH))
michael@0: ALL_DEP_FILES := \
michael@0:   $(BINARIES_PP) \
michael@0:   $(addsuffix .pp,$(addprefix $(MDDEPDIR)/,$(sort \
michael@0:     $(TARGETS) \
michael@0:     $(filter-out $(SOBJS) $(ASOBJS) $(EXCLUDED_OBJS),$(OBJ_TARGETS)) \
michael@0:   ))) \
michael@0:   $(NULL)
michael@0: endif
michael@0: 
michael@0: binaries libs:: $(TARGETS) $(BINARIES_PP)
michael@0: ifneq (.,$(DEPTH))
michael@0: 	@$(if $^,$(call py_action,link_deps,-o binaries --group-all --topsrcdir $(topsrcdir) --topobjdir $(DEPTH) --dist $(DIST) $(ALL_DEP_FILES)))
michael@0: endif
michael@0: 
michael@0: endif
michael@0: 
michael@0: endif # ifdef MOZ_PSEUDO_DERECURSE
michael@0: 
michael@0: recurse:
michael@0: 	@$(RECURSED_COMMAND)
michael@0: 	$(LOOP_OVER_PARALLEL_DIRS)
michael@0: 	$(LOOP_OVER_DIRS)
michael@0: 	$(LOOP_OVER_TOOL_DIRS)