config/recurse.mk

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
   3 # You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 ifndef INCLUDED_RULES_MK
   6 include $(topsrcdir)/config/rules.mk
   7 endif
   8
   9 # Make sure that anything that needs to be defined in moz.build wasn't
  10 # overwritten after including rules.mk.
  11 _eval_for_side_effects := $(CHECK_MOZBUILD_VARIABLES)
  12
  13 # The traditional model of directory traversal with make is as follows:
  14 #   make -C foo
  15 #     Entering foo
  16 #     make -C bar
  17 #       Entering foo/bar
  18 #     make -C baz
  19 #       Entering foo/baz
  20 #   make -C qux
  21 #     Entering qux
  22 #
  23 # Pseudo derecurse transforms the above into:
  24 #   make -C foo
  25 #   make -C foo/bar
  26 #   make -C foo/baz
  27 #   make -C qux
  28
  29 ifeq (.,$(DEPTH))
  30
  31 include root.mk
  32
  33 # Main rules (export, compile, libs and tools) call recurse_* rules.
  34 # This wrapping is only really useful for build status.
  35 $(TIERS)::
  36         $(call BUILDSTATUS,TIER_START $@)
  37         +$(MAKE) recurse_$@
  38         $(call BUILDSTATUS,TIER_FINISH $@)
  39
  40 # Special rule that does install-manifests (cf. Makefile.in) + compile
  41 binaries::
  42         +$(MAKE) recurse_compile
  43
  44 # Carefully avoid $(eval) type of rule generation, which makes pymake slower
  45 # than necessary.
  46 # Get current tier and corresponding subtiers from the data in root.mk.
  47 CURRENT_TIER := $(filter $(foreach tier,$(TIERS),recurse_$(tier) $(tier)-deps),$(MAKECMDGOALS))
  48 ifneq (,$(filter-out 0 1,$(words $(CURRENT_TIER))))
  49 $(error $(CURRENT_TIER) not supported on the same make command line)
  50 endif
  51 CURRENT_TIER := $(subst recurse_,,$(CURRENT_TIER:-deps=))
  52
  53 # The rules here are doing directory traversal, so we don't want further
  54 # recursion to happen when running make -C subdir $tier. But some make files
  55 # further call make -C something else, and sometimes expect recursion to
  56 # happen in that case (see browser/metro/locales/Makefile.in for example).
  57 # Conveniently, every invocation of make increases MAKELEVEL, so only stop
  58 # recursion from happening at current MAKELEVEL + 1.
  59 ifdef CURRENT_TIER
  60 ifeq (0,$(MAKELEVEL))
  61 export NO_RECURSE_MAKELEVEL=1
  62 else
  63 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)
  64 endif
  65 endif
  66
  67 # Use the $(*_dirs) variables available in root.mk
  68 CURRENT_DIRS := $($(CURRENT_TIER)_dirs)
  69
  70 # Need a list of compile targets because we can't use pattern rules:
  71 # https://savannah.gnu.org/bugs/index.php?42833
  72 .PHONY: $(compile_targets)
  73 $(compile_targets):
  74         $(call SUBMAKE,$(@F),$(@D))
  75
  76 # The compile tier has different rules from other tiers.
  77 ifneq ($(CURRENT_TIER),compile)
  78
  79 # Recursion rule for all directories traversed for all subtiers in the
  80 # current tier.
  81 $(addsuffix /$(CURRENT_TIER),$(CURRENT_DIRS)): %/$(CURRENT_TIER):
  82         $(call SUBMAKE,$(CURRENT_TIER),$*)
  83
  84 .PHONY: $(addsuffix /$(CURRENT_TIER),$(CURRENT_DIRS))
  85
  86 # Dummy rules for possibly inexisting dependencies for the above tier targets
  87 $(addsuffix /Makefile,$(CURRENT_DIRS)) $(addsuffix /backend.mk,$(CURRENT_DIRS)):
  88
  89 ifeq ($(CURRENT_TIER),export)
  90 # At least build/export requires config/export for buildid, but who knows what
  91 # else, so keep this global dependency to make config/export first for now.
  92 $(addsuffix /$(CURRENT_TIER),$(filter-out config,$(CURRENT_DIRS))): config/$(CURRENT_TIER)
  93
  94 # The export tier requires nsinstall, which is built from config. So every
  95 # subdirectory traversal needs to happen after building nsinstall in config, which
  96 # is done with the config/host target. Note the config/host target only exists if
  97 # nsinstall is actually built, which it is not on Windows, because we use
  98 # nsinstall.py there.
  99 ifneq (,$(filter config/host, $(compile_targets)))
 100 $(addsuffix /$(CURRENT_TIER),$(CURRENT_DIRS)): config/host
 101 endif
 102 endif
 103
 104 endif # ifeq ($(CURRENT_TIER),compile)
 105
 106 else
 107
 108 # Don't recurse if MAKELEVEL is NO_RECURSE_MAKELEVEL as defined above
 109 ifeq ($(NO_RECURSE_MAKELEVEL),$(MAKELEVEL))
 110
 111 $(TIERS)::
 112
 113 else
 114 #########################
 115 # Tier traversal handling
 116 #########################
 117
 118 define CREATE_SUBTIER_TRAVERSAL_RULE
 119 .PHONY: $(1)
 120
 121 $(1):: $$(SUBMAKEFILES)
 122         $$(LOOP_OVER_DIRS)
 123
 124 endef
 125
 126 $(foreach subtier,$(filter-out compile,$(TIERS)),$(eval $(call CREATE_SUBTIER_TRAVERSAL_RULE,$(subtier))))
 127
 128 ifndef TOPLEVEL_BUILD
 129 libs:: target host
 130 endif
 131
 132 endif # ifeq ($(NO_RECURSE_MAKELEVEL),$(MAKELEVEL))
 133
 134 endif # ifeq (.,$(DEPTH))
 135
 136 recurse:
 137         @$(RECURSED_COMMAND)
 138         $(LOOP_OVER_DIRS)
 139
 140 ifeq (.,$(DEPTH))
 141 # Interdependencies for parallel export.
 142 js/xpconnect/src/export: dom/bindings/export xpcom/xpidl/export
 143 accessible/xpcom/export: xpcom/xpidl/export
 144
 145 # The widget binding generator code is part of the annotationProcessors.
 146 widget/android/bindings/export: build/annotationProcessors/export
 147
 148 ifdef ENABLE_CLANG_PLUGIN
 149 $(filter-out build/clang-plugin/%,$(compile_targets)): build/clang-plugin/target build/clang-plugin/tests/target
 150 build/clang-plugin/tests/target: build/clang-plugin/target
 151 endif
 152
 153 # Interdependencies that moz.build world don't know about yet for compilation.
 154 # Note some others are hardcoded or "guessed" in recursivemake.py and emitter.py
 155 ifeq ($(MOZ_WIDGET_TOOLKIT),gtk3)
 156 toolkit/library/target: widget/gtk/mozgtk/gtk3/target
 157 endif
 158 ifdef MOZ_LDAP_XPCOM
 159 ldap/target: config/external/nss/target mozglue/build/target
 160 toolkit/library/target: ldap/target
 161 endif
 162 ifeq ($(MOZ_REPLACE_MALLOC_LINKAGE),dummy library)
 163 mozglue/build/target memory/replace/logalloc/replay/target: memory/replace/dummy/target
 164 endif
 165 ifdef MOZ_CRT
 166 mozglue/crt/target: mozglue/build/target
 167 endif
 168
 169 endif