version_defaults.mk revision dca5dd4f795d6f47591370c1ad27d45b2432b208
1# 2# Copyright (C) 2008 The Android Open Source Project 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15# 16 17# 18# Handle various build version information. 19# 20# Guarantees that the following are defined: 21# PLATFORM_VERSION 22# PLATFORM_SDK_VERSION 23# PLATFORM_VERSION_CODENAME 24# DEFAULT_APP_TARGET_SDK 25# BUILD_ID 26# BUILD_NUMBER 27# BUILD_DATETIME 28# SECURITY_PATCH 29# 30 31# Look for an optional file containing overrides of the defaults, 32# but don't cry if we don't find it. We could just use -include, but 33# the build.prop target also wants INTERNAL_BUILD_ID_MAKEFILE to be set 34# if the file exists. 35# 36INTERNAL_BUILD_ID_MAKEFILE := $(wildcard $(BUILD_SYSTEM)/build_id.mk) 37ifneq "" "$(INTERNAL_BUILD_ID_MAKEFILE)" 38 include $(INTERNAL_BUILD_ID_MAKEFILE) 39endif 40 41ifeq "" "$(PLATFORM_VERSION)" 42 # This is the canonical definition of the platform version, 43 # which is the version that we reveal to the end user. 44 # Update this value when the platform version changes (rather 45 # than overriding it somewhere else). Can be an arbitrary string. 46 PLATFORM_VERSION := 6.0 47endif 48 49ifeq "" "$(PLATFORM_SDK_VERSION)" 50 # This is the canonical definition of the SDK version, which defines 51 # the set of APIs and functionality available in the platform. It 52 # is a single integer that increases monotonically as updates to 53 # the SDK are released. It should only be incremented when the APIs for 54 # the new release are frozen (so that developers don't write apps against 55 # intermediate builds). During development, this number remains at the 56 # SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds 57 # the code-name of the new development work. 58 PLATFORM_SDK_VERSION := 23 59endif 60 61ifeq "" "$(PLATFORM_VERSION_CODENAME)" 62 # This is the current development code-name, if the build is not a final 63 # release build. If this is a final release build, it is simply "REL". 64 PLATFORM_VERSION_CODENAME := REL 65 66 # This is all of the development codenames that are active. Should be either 67 # the same as PLATFORM_VERSION_CODENAME or a comma-separated list of additional 68 # codenames after PLATFORM_VERSION_CODENAME. 69 PLATFORM_VERSION_ALL_CODENAMES := $(PLATFORM_VERSION_CODENAME) 70endif 71 72ifeq "REL" "$(PLATFORM_VERSION_CODENAME)" 73 PLATFORM_PREVIEW_SDK_VERSION := 0 74else 75 ifeq "" "$(PLATFORM_PREVIEW_SDK_VERSION)" 76 # This is the definition of a preview SDK version over and above the current 77 # platform SDK version. Unlike the platform SDK version, a higher value 78 # for preview SDK version does NOT mean that all prior preview APIs are 79 # included. Packages reading this value to determine compatibility with 80 # known APIs should check that this value is precisely equal to the preview 81 # SDK version the package was built for, otherwise it should fall back to 82 # assuming the device can only support APIs as of the previous official 83 # public release. 84 # This value will always be 0 for release builds. 85 PLATFORM_PREVIEW_SDK_VERSION := 0 86 endif 87endif 88 89ifeq "" "$(DEFAULT_APP_TARGET_SDK)" 90 # This is the default minSdkVersion and targetSdkVersion to use for 91 # all .apks created by the build system. It can be overridden by explicitly 92 # setting these in the .apk's AndroidManifest.xml. It is either the code 93 # name of the development build or, if this is a release build, the official 94 # SDK version of this release. 95 ifeq "REL" "$(PLATFORM_VERSION_CODENAME)" 96 DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION) 97 else 98 DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME) 99 endif 100endif 101 102ifeq "" "$(PLATFORM_SECURITY_PATCH)" 103 # Used to indicate the security patch that has been applied to the device. 104 # Can be an arbitrary string, but must be a single word. 105 # 106 # If there is no $PLATFORM_SECURITY_PATCH set, keep it empty. 107 PLATFORM_SECURITY_PATCH := 2015-12-01 108endif 109 110ifeq "" "$(PLATFORM_BASE_OS)" 111 # Used to indicate the base os applied to the device. 112 # Can be an arbitrary string, but must be a single word. 113 # 114 # If there is no $PLATFORM_BASE_OS set, keep it empty. 115 PLATFORM_BASE_OS := 116endif 117 118ifeq "" "$(BUILD_ID)" 119 # Used to signify special builds. E.g., branches and/or releases, 120 # like "M5-RC7". Can be an arbitrary string, but must be a single 121 # word and a valid file name. 122 # 123 # If there is no BUILD_ID set, make it obvious. 124 BUILD_ID := UNKNOWN 125endif 126 127ifeq "" "$(BUILD_DATETIME)" 128 # Used to reproduce builds by setting the same time. Must be the number 129 # of seconds since the Epoch. 130 BUILD_DATETIME := $(shell date +%s) 131endif 132 133ifneq (,$(findstring Darwin,$(shell uname -sm))) 134DATE := date -r $(BUILD_DATETIME) 135else 136DATE := date -d @$(BUILD_DATETIME) 137endif 138 139ifeq "" "$(BUILD_NUMBER)" 140 # BUILD_NUMBER should be set to the source control value that 141 # represents the current state of the source code. E.g., a 142 # perforce changelist number or a git hash. Can be an arbitrary string 143 # (to allow for source control that uses something other than numbers), 144 # but must be a single word and a valid file name. 145 # 146 # If no BUILD_NUMBER is set, create a useful "I am an engineering build 147 # from this date/time" value. Make it start with a non-digit so that 148 # anyone trying to parse it as an integer will probably get "0". 149 BUILD_NUMBER := eng.$(USER).$(shell $(DATE) +%Y%m%d.%H%M%S) 150endif 151