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#
# Copyright (C) 2008 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.
#
#
# Handle various build version information.
#
# Guarantees that the following are defined:
# PLATFORM_VERSION
# PLATFORM_SDK_VERSION
# BUILD_ID
# BUILD_NUMBER
#
# Look for an optional file containing overrides of the defaults,
# but don't cry if we don't find it. We could just use -include, but
# the build.prop target also wants INTERNAL_BUILD_ID_MAKEFILE to be set
# if the file exists.
#
INTERNAL_BUILD_ID_MAKEFILE := $(wildcard $(BUILD_SYSTEM)/build_id.mk)
ifneq "" "$(INTERNAL_BUILD_ID_MAKEFILE)"
include $(INTERNAL_BUILD_ID_MAKEFILE)
endif
ifeq "" "$(PLATFORM_VERSION)"
# This is the canonical definition of the platform version,
# which is the version that we reveal to the end user.
# Update this value when the platform version changes (rather
# than overriding it somewhere else). Can be an arbitrary string.
PLATFORM_VERSION := 1.5
endif
ifeq "" "$(PLATFORM_SDK_VERSION)"
# This is the canonical definition of the SDK version, which defines
# the set of APIs and functionality available in the platform. This is
# a single integer, that increases monotonically as updates to the SDK
# are released.
PLATFORM_SDK_VERSION := 3
endif
ifeq "" "$(BUILD_ID)"
# Used to signify special builds. E.g., branches and/or releases,
# like "M5-RC7". Can be an arbitrary string, but must be a single
# word and a valid file name.
#
# If there is no BUILD_ID set, make it obvious.
BUILD_ID := UNKNOWN
endif
ifeq "" "$(BUILD_NUMBER)"
# BUILD_NUMBER should be set to the source control value that
# represents the current state of the source code. E.g., a
# perforce changelist number or a git hash. Can be an arbitrary string
# (to allow for source control that uses something other than numbers),
# but must be a single word and a valid file name.
#
# If no BUILD_NUMBER is set, create a useful "I am an engineering build
# from this date/time" value. Make it start with a non-digit so that
# anyone trying to parse it as an integer will probably get "0".
BUILD_NUMBER := eng.$(USER).$(shell date +%Y%m%d.%H%M%S)
endif
ifeq "true" "$(DISPLAY_BUILD_NUMBER)"
# if the build_id.mk has this defined, then BUILD_ID is updated with
# the BUILD_NUMBER as well. For development branches, this will be
# set, but release branches this will not be set.
BUILD_DISPLAY_ID := "$(BUILD_ID).$(BUILD_NUMBER)"
else
BUILD_DISPLAY_ID := "$(BUILD_ID)"
endif
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