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#
# Copyright (C) 2018 The Android Open Source Project
#
# 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.
#
##### Input Variables:
# LOCAL_MODULE: required. Module name for the build system.
# LOCAL_MODULE_CLASS: optional. Default is ETC.
# LOCAL_MODULE_PATH / LOCAL_MODULE_RELATIVE_PATH: required. (Relative) path of output file.
# If not defined, LOCAL_MODULE_RELATIVE_PATH will be "vintf".
# LOCAL_MODULE_STEM: optional. Name of output file. Default is $(LOCAL_MODULE).
# LOCAL_SRC_FILES: required. Local source files provided to assemble_vintf
# (command line argument -i).
# LOCAL_GENERATED_SOURCES: optional. Global source files provided to assemble_vintf
# (command line argument -i).
#
# LOCAL_ADD_VBMETA_VERSION: Use AVBTOOL to add avb version to the output matrix
# (corresponds to <avb><vbmeta-version> tag)
# LOCAL_ASSEMBLE_VINTF_ENV_VARS: Add a list of environment variable names from global variables in
# the build system that is lazily evaluated (e.g. PRODUCT_ENFORCE_VINTF_MANIFEST).
# LOCAL_ASSEMBLE_VINTF_ENV_VARS_OVERRIDE: Add a list of environment variables that is local to
# assemble_vintf invocation. Format is "VINTF_ENFORCE_NO_UNUSED_HALS=true".
# LOCAL_ASSEMBLE_VINTF_FLAGS: Add additional command line arguments to assemble_vintf invocation.
# LOCAL_KERNEL_CONFIG_DATA_PATHS: Paths to search for kernel config requirements. Format for each is
# <kernel version x.y.z>:<path that contains android-base*.config>.
# LOCAL_GEN_FILE_DEPENDENCIES: A list of additional dependencies for the generated file.
ifndef LOCAL_MODULE
$(error LOCAL_MODULE must be defined.)
endif
ifndef LOCAL_MODULE_STEM
LOCAL_MODULE_STEM := $(LOCAL_MODULE)
endif
ifndef LOCAL_MODULE_CLASS
LOCAL_MODULE_CLASS := ETC
endif
ifndef LOCAL_MODULE_PATH
ifndef LOCAL_MODULE_RELATIVE_PATH
$(error Either LOCAL_MODULE_PATH or LOCAL_MODULE_RELATIVE_PATH must be defined.)
endif
endif
GEN := $(local-generated-sources-dir)/$(LOCAL_MODULE_STEM)
$(GEN): PRIVATE_ENV_VARS := $(LOCAL_ASSEMBLE_VINTF_ENV_VARS)
$(GEN): PRIVATE_FLAGS := $(LOCAL_ASSEMBLE_VINTF_FLAGS)
$(GEN): $(LOCAL_GEN_FILE_DEPENDENCIES)
ifeq (true,$(strip $(LOCAL_ADD_VBMETA_VERSION)))
ifeq (true,$(BOARD_AVB_ENABLE))
$(GEN): $(AVBTOOL)
# INTERNAL_AVB_SYSTEM_SIGNING_ARGS consists of BOARD_AVB_SYSTEM_KEY_PATH and
# BOARD_AVB_SYSTEM_ALGORITHM. We should add the dependency of key path, which
# is a file, here.
$(GEN): $(BOARD_AVB_SYSTEM_KEY_PATH)
# Use deferred assignment (=) instead of immediate assignment (:=).
# Otherwise, cannot get INTERNAL_AVB_SYSTEM_SIGNING_ARGS.
$(GEN): FRAMEWORK_VBMETA_VERSION = $$("$(AVBTOOL)" add_hashtree_footer \
--print_required_libavb_version \
$(INTERNAL_AVB_SYSTEM_SIGNING_ARGS) \
$(BOARD_AVB_SYSTEM_ADD_HASHTREE_FOOTER_ARGS))
else
$(GEN): FRAMEWORK_VBMETA_VERSION := 0.0
endif # BOARD_AVB_ENABLE
$(GEN): PRIVATE_ENV_VARS += FRAMEWORK_VBMETA_VERSION
endif # LOCAL_ADD_VBMETA_VERSION
ifeq (true,$(strip $(LOCAL_ADD_VBMETA_VERSION_OVERRIDE)))
ifneq ($(BOARD_OTA_FRAMEWORK_VBMETA_VERSION_OVERRIDE),)
$(GEN): FRAMEWORK_VBMETA_VERSION_OVERRIDE := $(BOARD_OTA_FRAMEWORK_VBMETA_VERSION_OVERRIDE)
$(GEN): PRIVATE_ENV_VARS += FRAMEWORK_VBMETA_VERSION_OVERRIDE
endif
endif
ifneq (,$(strip $(LOCAL_KERNEL_CONFIG_DATA_PATHS)))
$(GEN): PRIVATE_KERNEL_CONFIG_DATA_PATHS := $(LOCAL_KERNEL_CONFIG_DATA_PATHS)
$(GEN): $(foreach pair,$(LOCAL_KERNEL_CONFIG_DATA_PATHS),\
$(wildcard $(call word-colon,2,$(pair))/android-base*.config))
$(GEN): PRIVATE_FLAGS += $(foreach pair,$(PRIVATE_KERNEL_CONFIG_DATA_PATHS),\
--kernel=$(call word-colon,1,$(pair)):$(call normalize-path-list,\
$(wildcard $(call word-colon,2,$(pair))/android-base*.config)))
endif
my_matrix_src_files := \
$(addprefix $(LOCAL_PATH)/,$(LOCAL_SRC_FILES)) \
$(LOCAL_GENERATED_SOURCES)
$(GEN): PRIVATE_ADDITIONAL_ENV_VARS := $(LOCAL_ASSEMBLE_VINTF_ENV_VARS_OVERRIDE)
ifneq (,$(strip $(LOCAL_ASSEMBLE_VINTF_ERROR_MESSAGE)))
$(GEN): PRIVATE_COMMAND_TAIL := || (echo $(strip $(LOCAL_ASSEMBLE_VINTF_ERROR_MESSAGE)) && false)
endif
$(GEN): PRIVATE_SRC_FILES := $(my_matrix_src_files)
$(GEN): $(my_matrix_src_files) $(HOST_OUT_EXECUTABLES)/assemble_vintf
$(foreach varname,$(PRIVATE_ENV_VARS),\
$(if $(findstring $(varname),$(PRIVATE_ADDITIONAL_ENV_VARS)),\
$(error $(varname) should not be overridden by LOCAL_ASSEMBLE_VINTF_ENV_VARS_OVERRIDE.)))
$(foreach varname,$(PRIVATE_ENV_VARS),$(varname)="$($(varname))") \
$(PRIVATE_ADDITIONAL_ENV_VARS) \
$(HOST_OUT_EXECUTABLES)/assemble_vintf \
-i $(call normalize-path-list,$(PRIVATE_SRC_FILES)) \
-o $@ \
$(PRIVATE_FLAGS) $(PRIVATE_COMMAND_TAIL)
LOCAL_PREBUILT_MODULE_FILE := $(GEN)
LOCAL_SRC_FILES :=
LOCAL_GENERATED_SOURCES :=
include $(LOCAL_PATH)/clear_vars.mk
my_matrix_src_files :=
include $(BUILD_PREBUILT)