make/userspace_recurse.mk - trusty/lib - Git at Google

 #
 # Copyright (c) 2020, Google, Inc. All rights reserved
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #

 # Recursively ensure that dependencies are built and include their flags +
 # includes in the current module's build. This file isolates dependencies from
 # their parent module's and the global state, allowing each library to be built
 # independently.
 #
 # args:
 # MODULE : Current module name (required)
 #
 # DEPENDENCY_MODULE : Dependency to build.
 #     OR
 # EXPORT_DEPENDENCY_MODULE : Dependency to build, flags exported by the
 # 		dependency will be re-exported from the current module.
 #
 # This file extends the current MODULE_* flags with $(DEPENDENCY_MODULE)'s
 # MODULE_EXPORT_* flags. In the case of EXPORT_DEPENDENCY_MODULE, the
 # dependency's flags will also be appended to the current MODULE_EXPORT_* flags.

 ifneq ($(strip $(DEPENDENCY_MODULE)),)
 ifneq ($(strip $(EXPORT_DEPENDENCY_MODULE)),)
 $(error DEPENDENCY_MODULE and EXPORT_DEPENDENCY_MODULE are mutually exclusive. Please set one or the other when adding dependencies to $(MODULE).)
 endif
 endif

 ifneq ($(strip $(EXPORT_DEPENDENCY_MODULE)),)
 DEPENDENCY_MODULE := $(EXPORT_DEPENDENCY_MODULE)
 endif

 $(info Building $(DEPENDENCY_MODULE) for $(MODULE))

 # SAVED_MODULE_STACK contains a stack of the current dependency chain. We need
 # to recursively keep track of this chain so that we can restore our parent
 # modules private flags after adding our exported flags (and rules if not
 # already emitted).
 ifeq ($(filter $(MODULE),$(SAVED_MODULE_STACK)),)
 ifeq ($(_MODULES_$(DEPENDENCY_MODULE)),)

 # Cache our current state, as it will get wiped out when including dependencies
 # in recurse-lib-deps. This must be module-specific as we can have a multi-layer
 # chain and these variable are globally scoped.
 SAVED_MODULE_STACK := $(SAVED_MODULE_STACK) $(MODULE)
 SAVED_$(MODULE)_SRCS := $(MODULE_SRCS)
 SAVED_$(MODULE)_SRCS_FIRST := $(MODULE_SRCS_FIRST)
 SAVED_$(MODULE)_STATIC_LIB := $(MODULE_STATIC_LIB)
 SAVED_$(MODULE)_DEPS := $(MODULE_DEPS)
 SAVED_$(MODULE)_LIBRARIES := $(MODULE_LIBRARIES)
 SAVED_$(MODULE)_RLIBS := $(MODULE_RLIBS)
 SAVED_$(MODULE)_LIBRARY_DEPS := $(MODULE_LIBRARY_DEPS)
 SAVED_$(MODULE)_LIBRARY_EXPORTED_DEPS := $(MODULE_LIBRARY_EXPORTED_DEPS)
 SAVED_$(MODULE)_ADD_IMPLICIT_DEPS := $(MODULE_ADD_IMPLICIT_DEPS)
 SAVED_$(MODULE)_DEFINES := $(MODULE_DEFINES)
 SAVED_$(MODULE)_COMPILEFLAGS := $(MODULE_COMPILEFLAGS)
 SAVED_$(MODULE)_CONSTANTS := $(MODULE_CONSTANTS)
 SAVED_$(MODULE)_CFLAGS := $(MODULE_CFLAGS)
 SAVED_$(MODULE)_CPPFLAGS := $(MODULE_CPPFLAGS)
 SAVED_$(MODULE)_ASMFLAGS := $(MODULE_ASMFLAGS)
 SAVED_$(MODULE)_LDFLAGS := $(MODULE_LDFLAGS)
 SAVED_$(MODULE)_RUSTFLAGS := $(MODULE_RUSTFLAGS)
 SAVED_$(MODULE)_INCLUDES := $(MODULE_INCLUDES)
 SAVED_$(MODULE)_SRCDEPS := $(MODULE_SRCDEPS)
 SAVED_$(MODULE)_EXTRA_OBJECTS := $(MODULE_EXTRA_OBJECTS)
 SAVED_$(MODULE)_ARM_OVERRIDE_SRCS := $(MODULE_ARM_OVERRIDE_SRCS)
 SAVED_$(MODULE)_IS_RUST := $(MODULE_IS_RUST)
 SAVED_$(MODULE)_CRATE_NAME := $(MODULE_CRATE_NAME)
 SAVED_$(MODULE)_RUST_CRATE_TYPES := $(MODULE_RUST_CRATE_TYPES)

 # save global variables
 SAVED_$(MODULE)_GLOBAL_OPTFLAGS := $(GLOBAL_OPTFLAGS)
 SAVED_$(MODULE)_GLOBAL_COMPILEFLAGS := $(GLOBAL_COMPILEFLAGS)
 SAVED_$(MODULE)_GLOBAL_CFLAGS := $(GLOBAL_CFLAGS)
 SAVED_$(MODULE)_GLOBAL_CPPFLAGS := $(GLOBAL_CPPFLAGS)
 SAVED_$(MODULE)_GLOBAL_ASMFLAGS := $(GLOBAL_ASMFLAGS)
 SAVED_$(MODULE)_GLOBAL_RUSTFLAGS := $(GLOBAL_RUSTFLAGS)
 SAVED_$(MODULE)_GLOBAL_INCLUDES := $(GLOBAL_INCLUDES)
 SAVED_$(MODULE)_GLOBAL_DEFINES := $(GLOBAL_DEFINES)

 SAVED_$(MODULE)_BUILDDIR := $(BUILDDIR)
 SAVED_$(MODULE)_MANIFEST := $(MANIFEST)
 SAVED_$(MODULE)_ALLMODULES := $(ALLMODULES)
 SAVED_$(MODULE)_ALLMODULE_OBJS := $(ALLMODULE_OBJS)
 SAVED_$(MODULE)_ALLOBJS := $(ALLOBJS)

 SAVED_$(MODULE)_EXPORT_DEFINES := $(MODULE_EXPORT_DEFINES)
 SAVED_$(MODULE)_EXPORT_COMPILEFLAGS := $(MODULE_EXPORT_COMPILEFLAGS)
 SAVED_$(MODULE)_EXPORT_CONSTANTS := $(MODULE_EXPORT_CONSTANTS)
 SAVED_$(MODULE)_EXPORT_CFLAGS := $(MODULE_EXPORT_CFLAGS)
 SAVED_$(MODULE)_EXPORT_CPPFLAGS := $(MODULE_EXPORT_CPPFLAGS)
 SAVED_$(MODULE)_EXPORT_ASMFLAGS := $(MODULE_EXPORT_ASMFLAGS)
 SAVED_$(MODULE)_EXPORT_LIBRARIES := $(MODULE_EXPORT_LIBRARIES)
 SAVED_$(MODULE)_EXPORT_RLIBS := $(MODULE_EXPORT_RLIBS)
 SAVED_$(MODULE)_EXPORT_LDFLAGS := $(MODULE_EXPORT_LDFLAGS)
 SAVED_$(MODULE)_EXPORT_INCLUDES := $(MODULE_EXPORT_INCLUDES)
 SAVED_$(MODULE)_EXPORT_EXTRA_OBJECTS := $(MODULE_EXPORT_EXTRA_OBJECTS)

 SAVED_$(MODULE)_DEPENDENCY_MODULE := $(DEPENDENCY_MODULE)
 SAVED_$(MODULE)_EXPORT_DEPENDENCY_MODULE := $(EXPORT_DEPENDENCY_MODULE)

 # If we're using this isolation wrapper, we're using the new module system
 TRUSTY_NEW_MODULE_SYSTEM := true

 # trusted_app.mk will set this to true when building the app module
 TRUSTY_APP :=

 MODULE :=
 MODULE_SRCS :=
 MODULE_SRCS_FIRST :=
 MODULE_STATIC_LIB :=
 MODULE_DEPS :=
 MODULE_LIBRARIES :=
 MODULE_RLIBS :=
 MODULE_LIBRARY_DEPS :=
 MODULE_LIBRARY_EXPORTED_DEPS :=
 MODULE_ADD_IMPLICIT_DEPS := true
 MODULE_DEFINES :=
 MODULE_COMPILEFLAGS :=
 MODULE_CONSTANTS :=
 MODULE_CFLAGS :=
 MODULE_CPPFLAGS :=
 MODULE_ASMFLAGS :=
 MODULE_RUSTFLAGS :=
 MODULE_LDFLAGS :=
 MODULE_INCLUDES :=
 MODULE_SRCDEPS :=
 MODULE_EXTRA_OBJECTS :=
 MODULE_ARM_OVERRIDE_SRCS :=
 MODULE_IS_RUST :=
 MODULE_CRATE_NAME :=
 MODULE_RUST_CRATE_TYPES :=

 # Reset global variables
 GLOBAL_OPTFLAGS :=
 GLOBAL_COMPILEFLAGS :=
 GLOBAL_CFLAGS :=
 GLOBAL_CPPFLAGS :=
 GLOBAL_ASMFLAGS :=
 GLOBAL_RUSTFLAGS :=
 GLOBAL_INCLUDES :=
 GLOBAL_DEFINES :=

 MODULE_EXPORT_DEFINES :=
 MODULE_EXPORT_EXTRA_OBJECTS :=
 MODULE_EXPORT_COMPILEFLAGS :=
 MODULE_EXPORT_CONSTANTS :=
 MODULE_EXPORT_CFLAGS :=
 MODULE_EXPORT_CPPFLAGS :=
 MODULE_EXPORT_ASMFLAGS :=
 MODULE_EXPORT_INCLUDES :=
 MODULE_EXPORT_LDFLAGS :=
 MODULE_EXPORT_LIBRARIES :=
 MODULE_EXPORT_RLIBS :=
 MODULE_EXPORT_EXTRA_OBJECTS :=

 ALLMODULES :=
 ALLMODULE_OBJS :=
 ALLOBJS :=
 MANIFEST :=

 EXPORT_DEPENDENCY_MODULE :=

 include $(DEPENDENCY_MODULE)/rules.mk

 # Restore state from the saved stack
 MODULE := $(lastword $(SAVED_MODULE_STACK))
 SAVED_MODULE_STACK := $(filter-out $(MODULE),$(SAVED_MODULE_STACK))
 MODULE_SRCS := $(SAVED_$(MODULE)_SRCS)
 MODULE_SRCS_FIRST := $(SAVED_$(MODULE)_SRCS_FIRST)
 MODULE_STATIC_LIB := $(SAVED_$(MODULE)_STATIC_LIB)
 MODULE_DEPS := $(SAVED_$(MODULE)_DEPS)
 MODULE_LIBRARIES := $(SAVED_$(MODULE)_LIBRARIES)
 MODULE_RLIBS := $(SAVED_$(MODULE)_RLIBS)
 MODULE_LIBRARY_DEPS := $(SAVED_$(MODULE)_LIBRARY_DEPS)
 MODULE_LIBRARY_EXPORTED_DEPS := $(SAVED_$(MODULE)_LIBRARY_EXPORTED_DEPS)
 MODULE_ADD_IMPLICIT_DEPS := $(SAVED_$(MODULE)_ADD_IMPLICIT_DEPS)
 MODULE_DEFINES := $(SAVED_$(MODULE)_DEFINES)
 MODULE_COMPILEFLAGS := $(SAVED_$(MODULE)_COMPILEFLAGS)
 MODULE_CONSTANTS := $(SAVED_$(MODULE)_CONSTANTS)
 MODULE_CFLAGS := $(SAVED_$(MODULE)_CFLAGS)
 MODULE_CPPFLAGS := $(SAVED_$(MODULE)_CPPFLAGS)
 MODULE_ASMFLAGS := $(SAVED_$(MODULE)_ASMFLAGS)
 MODULE_RUSTFLAGS := $(SAVED_$(MODULE)_RUSTFLAGS)
 MODULE_LDFLAGS := $(SAVED_$(MODULE)_LDFLAGS)
 MODULE_INCLUDES := $(SAVED_$(MODULE)_INCLUDES)
 MODULE_SRCDEPS := $(SAVED_$(MODULE)_SRCDEPS)
 MODULE_EXTRA_OBJECTS := $(SAVED_$(MODULE)_EXTRA_OBJECTS)
 MODULE_ARM_OVERRIDE_SRCS := $(SAVED_$(MODULE)_ARM_OVERRIDE_SRCS)
 MODULE_IS_RUST := $(SAVED_$(MODULE)_IS_RUST)
 MODULE_CRATE_NAME := $(SAVED_$(MODULE)_CRATE_NAME)
 MODULE_RUST_CRATE_TYPES := $(SAVED_$(MODULE)_RUST_CRATE_TYPES)

 # Restore global variables
 GLOBAL_OPTFLAGS := $(SAVED_$(MODULE)_GLOBAL_OPTFLAGS)
 GLOBAL_COMPILEFLAGS := $(SAVED_$(MODULE)_GLOBAL_COMPILEFLAGS)
 GLOBAL_CFLAGS := $(SAVED_$(MODULE)_GLOBAL_CFLAGS)
 GLOBAL_CPPFLAGS := $(SAVED_$(MODULE)_GLOBAL_CPPFLAGS)
 GLOBAL_ASMFLAGS := $(SAVED_$(MODULE)_GLOBAL_ASMFLAGS)
 GLOBAL_RUSTFLAGS := $(SAVED_$(MODULE)_GLOBAL_RUSTFLAGS)
 GLOBAL_INCLUDES := $(SAVED_$(MODULE)_GLOBAL_INCLUDES)
 GLOBAL_DEFINES := $(SAVED_$(MODULE)_GLOBAL_DEFINES)

 BUILDDIR := $(SAVED_$(MODULE)_BUILDDIR)
 MANIFEST := $(SAVED_$(MODULE)_MANIFEST)
 ALLMODULES := $(SAVED_$(MODULE)_ALLMODULES)
 ALLMODULE_OBJS := $(SAVED_$(MODULE)_ALLMODULE_OBJS)
 ALLOBJS := $(SAVED_$(MODULE)_ALLOBJS) $(ALLOBJS)

 MODULE_EXPORT_DEFINES := $(SAVED_$(MODULE)_EXPORT_DEFINES)
 MODULE_EXPORT_COMPILEFLAGS := $(SAVED_$(MODULE)_EXPORT_COMPILEFLAGS)
 MODULE_EXPORT_CONSTANTS := $(SAVED_$(MODULE)_EXPORT_CONSTANTS)
 MODULE_EXPORT_CFLAGS := $(SAVED_$(MODULE)_EXPORT_CFLAGS)
 MODULE_EXPORT_CPPFLAGS := $(SAVED_$(MODULE)_EXPORT_CPPFLAGS)
 MODULE_EXPORT_ASMFLAGS := $(SAVED_$(MODULE)_EXPORT_ASMFLAGS)
 MODULE_EXPORT_LDFLAGS := $(SAVED_$(MODULE)_EXPORT_LDFLAGS)
 MODULE_EXPORT_LIBRARIES := $(SAVED_$(MODULE)_EXPORT_LIBRARIES)
 MODULE_EXPORT_RLIBS := $(SAVED_$(MODULE)_EXPORT_RLIBS)
 MODULE_EXPORT_INCLUDES := $(SAVED_$(MODULE)_EXPORT_INCLUDES)
 MODULE_EXPORT_EXTRA_OBJECTS := $(SAVED_$(MODULE)_EXPORT_EXTRA_OBJECTS)

 DEPENDENCY_MODULE := $(SAVED_$(MODULE)_DEPENDENCY_MODULE)
 EXPORT_DEPENDENCY_MODULE := $(SAVED_$(MODULE)_EXPORT_DEPENDENCY_MODULE)

 TRUSTY_NEW_MODULE_SYSTEM :=
 TRUSTY_APP_INTREE :=

 endif # _MODULES_$(DEPENDENCY_MODULE) not set
 endif # MODULE not in SAVED_MODULE_STACK

 ifneq ($(strip $(EXPORT_DEPENDENCY_MODULE)),)
 REEXPORT := true
 else
 REEXPORT :=
 endif

 define append-export-flags
 $(if $(2),$(eval EXPORT := EXPORT_))\
 $(eval MODULE_$(EXPORT)$(1) += $(filter-out $(MODULE_$(EXPORT)$(1)),$(_MODULES_$(DEPENDENCY_MODULE)_$(1))))\
 $(eval EXPORT :=)
 endef

 # Add our dependencies flags to our exported flags
 $(call append-export-flags,DEFINES,$(REEXPORT))
 $(call append-export-flags,COMPILEFLAGS,$(REEXPORT))
 $(call append-export-flags,CONSTANTS,$(REEXPORT))
 $(call append-export-flags,CFLAGS,$(REEXPORT))
 $(call append-export-flags,CPPFLAGS,$(REEXPORT))
 $(call append-export-flags,ASMFLAGS,$(REEXPORT))
 $(call append-export-flags,INCLUDES,$(REEXPORT))

 # We always re-export LDFLAGS and LIBRARIES. This is safe to do in the prescence
 # of recursive deps because libraries and link flags are additive and do not
 # affect the compiliation. If we have a dependency chain like A -> B -> C -> A,
 # we don't need to add A's link flags to C because we will get them in the final
 # link directly from A.
 $(call append-export-flags,EXTRA_OBJECTS,true)
 $(call append-export-flags,LDFLAGS,true)
 $(call append-export-flags,LIBRARIES,true)
 $(call append-export-flags,RLIBS,true)

 DEPENDENCY_MODULE :=
 EXPORT_DEPENDENCY_MODULE :=

 EXPORT :=
 REEXPORT :=
	#
	# Copyright (c) 2020, Google, Inc. All rights reserved
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	# Recursively ensure that dependencies are built and include their flags +
	# includes in the current module's build. This file isolates dependencies from
	# their parent module's and the global state, allowing each library to be built
	# independently.
	#
	# args:
	# MODULE : Current module name (required)
	#
	# DEPENDENCY_MODULE : Dependency to build.
	# OR
	# EXPORT_DEPENDENCY_MODULE : Dependency to build, flags exported by the
	# dependency will be re-exported from the current module.
	#
	# This file extends the current MODULE_* flags with $(DEPENDENCY_MODULE)'s
	# MODULE_EXPORT_* flags. In the case of EXPORT_DEPENDENCY_MODULE, the
	# dependency's flags will also be appended to the current MODULE_EXPORT_* flags.

	ifneq ($(strip $(DEPENDENCY_MODULE)),)
	ifneq ($(strip $(EXPORT_DEPENDENCY_MODULE)),)
	$(error DEPENDENCY_MODULE and EXPORT_DEPENDENCY_MODULE are mutually exclusive. Please set one or the other when adding dependencies to $(MODULE).)
	endif
	endif

	ifneq ($(strip $(EXPORT_DEPENDENCY_MODULE)),)
	DEPENDENCY_MODULE := $(EXPORT_DEPENDENCY_MODULE)
	endif

	$(info Building $(DEPENDENCY_MODULE) for $(MODULE))

	# SAVED_MODULE_STACK contains a stack of the current dependency chain. We need
	# to recursively keep track of this chain so that we can restore our parent
	# modules private flags after adding our exported flags (and rules if not
	# already emitted).
	ifeq ($(filter $(MODULE),$(SAVED_MODULE_STACK)),)
	ifeq ($(_MODULES_$(DEPENDENCY_MODULE)),)

	# Cache our current state, as it will get wiped out when including dependencies
	# in recurse-lib-deps. This must be module-specific as we can have a multi-layer
	# chain and these variable are globally scoped.
	SAVED_MODULE_STACK := $(SAVED_MODULE_STACK) $(MODULE)
	SAVED_$(MODULE)_SRCS := $(MODULE_SRCS)
	SAVED_$(MODULE)_SRCS_FIRST := $(MODULE_SRCS_FIRST)
	SAVED_$(MODULE)_STATIC_LIB := $(MODULE_STATIC_LIB)
	SAVED_$(MODULE)_DEPS := $(MODULE_DEPS)
	SAVED_$(MODULE)_LIBRARIES := $(MODULE_LIBRARIES)
	SAVED_$(MODULE)_RLIBS := $(MODULE_RLIBS)
	SAVED_$(MODULE)_LIBRARY_DEPS := $(MODULE_LIBRARY_DEPS)
	SAVED_$(MODULE)_LIBRARY_EXPORTED_DEPS := $(MODULE_LIBRARY_EXPORTED_DEPS)
	SAVED_$(MODULE)_ADD_IMPLICIT_DEPS := $(MODULE_ADD_IMPLICIT_DEPS)
	SAVED_$(MODULE)_DEFINES := $(MODULE_DEFINES)
	SAVED_$(MODULE)_COMPILEFLAGS := $(MODULE_COMPILEFLAGS)
	SAVED_$(MODULE)_CONSTANTS := $(MODULE_CONSTANTS)
	SAVED_$(MODULE)_CFLAGS := $(MODULE_CFLAGS)
	SAVED_$(MODULE)_CPPFLAGS := $(MODULE_CPPFLAGS)
	SAVED_$(MODULE)_ASMFLAGS := $(MODULE_ASMFLAGS)
	SAVED_$(MODULE)_LDFLAGS := $(MODULE_LDFLAGS)
	SAVED_$(MODULE)_RUSTFLAGS := $(MODULE_RUSTFLAGS)
	SAVED_$(MODULE)_INCLUDES := $(MODULE_INCLUDES)
	SAVED_$(MODULE)_SRCDEPS := $(MODULE_SRCDEPS)
	SAVED_$(MODULE)_EXTRA_OBJECTS := $(MODULE_EXTRA_OBJECTS)
	SAVED_$(MODULE)_ARM_OVERRIDE_SRCS := $(MODULE_ARM_OVERRIDE_SRCS)
	SAVED_$(MODULE)_IS_RUST := $(MODULE_IS_RUST)
	SAVED_$(MODULE)_CRATE_NAME := $(MODULE_CRATE_NAME)
	SAVED_$(MODULE)_RUST_CRATE_TYPES := $(MODULE_RUST_CRATE_TYPES)

	# save global variables
	SAVED_$(MODULE)_GLOBAL_OPTFLAGS := $(GLOBAL_OPTFLAGS)
	SAVED_$(MODULE)_GLOBAL_COMPILEFLAGS := $(GLOBAL_COMPILEFLAGS)
	SAVED_$(MODULE)_GLOBAL_CFLAGS := $(GLOBAL_CFLAGS)
	SAVED_$(MODULE)_GLOBAL_CPPFLAGS := $(GLOBAL_CPPFLAGS)
	SAVED_$(MODULE)_GLOBAL_ASMFLAGS := $(GLOBAL_ASMFLAGS)
	SAVED_$(MODULE)_GLOBAL_RUSTFLAGS := $(GLOBAL_RUSTFLAGS)
	SAVED_$(MODULE)_GLOBAL_INCLUDES := $(GLOBAL_INCLUDES)
	SAVED_$(MODULE)_GLOBAL_DEFINES := $(GLOBAL_DEFINES)

	SAVED_$(MODULE)_BUILDDIR := $(BUILDDIR)
	SAVED_$(MODULE)_MANIFEST := $(MANIFEST)
	SAVED_$(MODULE)_ALLMODULES := $(ALLMODULES)
	SAVED_$(MODULE)_ALLMODULE_OBJS := $(ALLMODULE_OBJS)
	SAVED_$(MODULE)_ALLOBJS := $(ALLOBJS)

	SAVED_$(MODULE)_EXPORT_DEFINES := $(MODULE_EXPORT_DEFINES)
	SAVED_$(MODULE)_EXPORT_COMPILEFLAGS := $(MODULE_EXPORT_COMPILEFLAGS)
	SAVED_$(MODULE)_EXPORT_CONSTANTS := $(MODULE_EXPORT_CONSTANTS)
	SAVED_$(MODULE)_EXPORT_CFLAGS := $(MODULE_EXPORT_CFLAGS)
	SAVED_$(MODULE)_EXPORT_CPPFLAGS := $(MODULE_EXPORT_CPPFLAGS)
	SAVED_$(MODULE)_EXPORT_ASMFLAGS := $(MODULE_EXPORT_ASMFLAGS)
	SAVED_$(MODULE)_EXPORT_LIBRARIES := $(MODULE_EXPORT_LIBRARIES)
	SAVED_$(MODULE)_EXPORT_RLIBS := $(MODULE_EXPORT_RLIBS)
	SAVED_$(MODULE)_EXPORT_LDFLAGS := $(MODULE_EXPORT_LDFLAGS)
	SAVED_$(MODULE)_EXPORT_INCLUDES := $(MODULE_EXPORT_INCLUDES)
	SAVED_$(MODULE)_EXPORT_EXTRA_OBJECTS := $(MODULE_EXPORT_EXTRA_OBJECTS)

	SAVED_$(MODULE)_DEPENDENCY_MODULE := $(DEPENDENCY_MODULE)
	SAVED_$(MODULE)_EXPORT_DEPENDENCY_MODULE := $(EXPORT_DEPENDENCY_MODULE)

	# If we're using this isolation wrapper, we're using the new module system
	TRUSTY_NEW_MODULE_SYSTEM := true

	# trusted_app.mk will set this to true when building the app module
	TRUSTY_APP :=

	MODULE :=
	MODULE_SRCS :=
	MODULE_SRCS_FIRST :=
	MODULE_STATIC_LIB :=
	MODULE_DEPS :=
	MODULE_LIBRARIES :=
	MODULE_RLIBS :=
	MODULE_LIBRARY_DEPS :=
	MODULE_LIBRARY_EXPORTED_DEPS :=
	MODULE_ADD_IMPLICIT_DEPS := true
	MODULE_DEFINES :=
	MODULE_COMPILEFLAGS :=
	MODULE_CONSTANTS :=
	MODULE_CFLAGS :=
	MODULE_CPPFLAGS :=
	MODULE_ASMFLAGS :=
	MODULE_RUSTFLAGS :=
	MODULE_LDFLAGS :=
	MODULE_INCLUDES :=
	MODULE_SRCDEPS :=
	MODULE_EXTRA_OBJECTS :=
	MODULE_ARM_OVERRIDE_SRCS :=
	MODULE_IS_RUST :=
	MODULE_CRATE_NAME :=
	MODULE_RUST_CRATE_TYPES :=

	# Reset global variables
	GLOBAL_OPTFLAGS :=
	GLOBAL_COMPILEFLAGS :=
	GLOBAL_CFLAGS :=
	GLOBAL_CPPFLAGS :=
	GLOBAL_ASMFLAGS :=
	GLOBAL_RUSTFLAGS :=
	GLOBAL_INCLUDES :=
	GLOBAL_DEFINES :=

	MODULE_EXPORT_DEFINES :=
	MODULE_EXPORT_EXTRA_OBJECTS :=
	MODULE_EXPORT_COMPILEFLAGS :=
	MODULE_EXPORT_CONSTANTS :=
	MODULE_EXPORT_CFLAGS :=
	MODULE_EXPORT_CPPFLAGS :=
	MODULE_EXPORT_ASMFLAGS :=
	MODULE_EXPORT_INCLUDES :=
	MODULE_EXPORT_LDFLAGS :=
	MODULE_EXPORT_LIBRARIES :=
	MODULE_EXPORT_RLIBS :=
	MODULE_EXPORT_EXTRA_OBJECTS :=

	ALLMODULES :=
	ALLMODULE_OBJS :=
	ALLOBJS :=
	MANIFEST :=

	EXPORT_DEPENDENCY_MODULE :=

	include $(DEPENDENCY_MODULE)/rules.mk

	# Restore state from the saved stack
	MODULE := $(lastword $(SAVED_MODULE_STACK))
	SAVED_MODULE_STACK := $(filter-out $(MODULE),$(SAVED_MODULE_STACK))
	MODULE_SRCS := $(SAVED_$(MODULE)_SRCS)
	MODULE_SRCS_FIRST := $(SAVED_$(MODULE)_SRCS_FIRST)
	MODULE_STATIC_LIB := $(SAVED_$(MODULE)_STATIC_LIB)
	MODULE_DEPS := $(SAVED_$(MODULE)_DEPS)
	MODULE_LIBRARIES := $(SAVED_$(MODULE)_LIBRARIES)
	MODULE_RLIBS := $(SAVED_$(MODULE)_RLIBS)
	MODULE_LIBRARY_DEPS := $(SAVED_$(MODULE)_LIBRARY_DEPS)
	MODULE_LIBRARY_EXPORTED_DEPS := $(SAVED_$(MODULE)_LIBRARY_EXPORTED_DEPS)
	MODULE_ADD_IMPLICIT_DEPS := $(SAVED_$(MODULE)_ADD_IMPLICIT_DEPS)
	MODULE_DEFINES := $(SAVED_$(MODULE)_DEFINES)
	MODULE_COMPILEFLAGS := $(SAVED_$(MODULE)_COMPILEFLAGS)
	MODULE_CONSTANTS := $(SAVED_$(MODULE)_CONSTANTS)
	MODULE_CFLAGS := $(SAVED_$(MODULE)_CFLAGS)
	MODULE_CPPFLAGS := $(SAVED_$(MODULE)_CPPFLAGS)
	MODULE_ASMFLAGS := $(SAVED_$(MODULE)_ASMFLAGS)
	MODULE_RUSTFLAGS := $(SAVED_$(MODULE)_RUSTFLAGS)
	MODULE_LDFLAGS := $(SAVED_$(MODULE)_LDFLAGS)
	MODULE_INCLUDES := $(SAVED_$(MODULE)_INCLUDES)
	MODULE_SRCDEPS := $(SAVED_$(MODULE)_SRCDEPS)
	MODULE_EXTRA_OBJECTS := $(SAVED_$(MODULE)_EXTRA_OBJECTS)
	MODULE_ARM_OVERRIDE_SRCS := $(SAVED_$(MODULE)_ARM_OVERRIDE_SRCS)
	MODULE_IS_RUST := $(SAVED_$(MODULE)_IS_RUST)
	MODULE_CRATE_NAME := $(SAVED_$(MODULE)_CRATE_NAME)
	MODULE_RUST_CRATE_TYPES := $(SAVED_$(MODULE)_RUST_CRATE_TYPES)

	# Restore global variables
	GLOBAL_OPTFLAGS := $(SAVED_$(MODULE)_GLOBAL_OPTFLAGS)
	GLOBAL_COMPILEFLAGS := $(SAVED_$(MODULE)_GLOBAL_COMPILEFLAGS)
	GLOBAL_CFLAGS := $(SAVED_$(MODULE)_GLOBAL_CFLAGS)
	GLOBAL_CPPFLAGS := $(SAVED_$(MODULE)_GLOBAL_CPPFLAGS)
	GLOBAL_ASMFLAGS := $(SAVED_$(MODULE)_GLOBAL_ASMFLAGS)
	GLOBAL_RUSTFLAGS := $(SAVED_$(MODULE)_GLOBAL_RUSTFLAGS)
	GLOBAL_INCLUDES := $(SAVED_$(MODULE)_GLOBAL_INCLUDES)
	GLOBAL_DEFINES := $(SAVED_$(MODULE)_GLOBAL_DEFINES)

	BUILDDIR := $(SAVED_$(MODULE)_BUILDDIR)
	MANIFEST := $(SAVED_$(MODULE)_MANIFEST)
	ALLMODULES := $(SAVED_$(MODULE)_ALLMODULES)
	ALLMODULE_OBJS := $(SAVED_$(MODULE)_ALLMODULE_OBJS)
	ALLOBJS := $(SAVED_$(MODULE)_ALLOBJS) $(ALLOBJS)

	MODULE_EXPORT_DEFINES := $(SAVED_$(MODULE)_EXPORT_DEFINES)
	MODULE_EXPORT_COMPILEFLAGS := $(SAVED_$(MODULE)_EXPORT_COMPILEFLAGS)
	MODULE_EXPORT_CONSTANTS := $(SAVED_$(MODULE)_EXPORT_CONSTANTS)
	MODULE_EXPORT_CFLAGS := $(SAVED_$(MODULE)_EXPORT_CFLAGS)
	MODULE_EXPORT_CPPFLAGS := $(SAVED_$(MODULE)_EXPORT_CPPFLAGS)
	MODULE_EXPORT_ASMFLAGS := $(SAVED_$(MODULE)_EXPORT_ASMFLAGS)
	MODULE_EXPORT_LDFLAGS := $(SAVED_$(MODULE)_EXPORT_LDFLAGS)
	MODULE_EXPORT_LIBRARIES := $(SAVED_$(MODULE)_EXPORT_LIBRARIES)
	MODULE_EXPORT_RLIBS := $(SAVED_$(MODULE)_EXPORT_RLIBS)
	MODULE_EXPORT_INCLUDES := $(SAVED_$(MODULE)_EXPORT_INCLUDES)
	MODULE_EXPORT_EXTRA_OBJECTS := $(SAVED_$(MODULE)_EXPORT_EXTRA_OBJECTS)

	DEPENDENCY_MODULE := $(SAVED_$(MODULE)_DEPENDENCY_MODULE)
	EXPORT_DEPENDENCY_MODULE := $(SAVED_$(MODULE)_EXPORT_DEPENDENCY_MODULE)

	TRUSTY_NEW_MODULE_SYSTEM :=
	TRUSTY_APP_INTREE :=

	endif # _MODULES_$(DEPENDENCY_MODULE) not set
	endif # MODULE not in SAVED_MODULE_STACK

	ifneq ($(strip $(EXPORT_DEPENDENCY_MODULE)),)
	REEXPORT := true
	else
	REEXPORT :=
	endif

	define append-export-flags
	$(if $(2),$(eval EXPORT := EXPORT_))\
	$(eval MODULE_$(EXPORT)$(1) += $(filter-out $(MODULE_$(EXPORT)$(1)),$(_MODULES_$(DEPENDENCY_MODULE)_$(1))))\
	$(eval EXPORT :=)
	endef

	# Add our dependencies flags to our exported flags
	$(call append-export-flags,DEFINES,$(REEXPORT))
	$(call append-export-flags,COMPILEFLAGS,$(REEXPORT))
	$(call append-export-flags,CONSTANTS,$(REEXPORT))
	$(call append-export-flags,CFLAGS,$(REEXPORT))
	$(call append-export-flags,CPPFLAGS,$(REEXPORT))
	$(call append-export-flags,ASMFLAGS,$(REEXPORT))
	$(call append-export-flags,INCLUDES,$(REEXPORT))

	# We always re-export LDFLAGS and LIBRARIES. This is safe to do in the prescence
	# of recursive deps because libraries and link flags are additive and do not
	# affect the compiliation. If we have a dependency chain like A -> B -> C -> A,
	# we don't need to add A's link flags to C because we will get them in the final
	# link directly from A.
	$(call append-export-flags,EXTRA_OBJECTS,true)
	$(call append-export-flags,LDFLAGS,true)
	$(call append-export-flags,LIBRARIES,true)
	$(call append-export-flags,RLIBS,true)

	DEPENDENCY_MODULE :=
	EXPORT_DEPENDENCY_MODULE :=

	EXPORT :=
	REEXPORT :=