version_defaults.mk revision f885e95375a48aeefd7d2451a5c61a48100bac77 
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#     SECURITY_PATCH
28#
29
30# Look for an optional file containing overrides of the defaults,
31# but don't cry if we don't find it.  We could just use -include, but
32# the build.prop target also wants INTERNAL_BUILD_ID_MAKEFILE to be set
33# if the file exists.
34#
35INTERNAL_BUILD_ID_MAKEFILE := $(wildcard $(BUILD_SYSTEM)/build_id.mk)
36ifneq "" "$(INTERNAL_BUILD_ID_MAKEFILE)"
37  include $(INTERNAL_BUILD_ID_MAKEFILE)
38endif
39
40ifeq "" "$(PLATFORM_VERSION)"
41  # This is the canonical definition of the platform version,
42  # which is the version that we reveal to the end user.
43  # Update this value when the platform version changes (rather
44  # than overriding it somewhere else).  Can be an arbitrary string.
45  PLATFORM_VERSION := 4.4.4
46endif
47
48ifeq "" "$(PLATFORM_SDK_VERSION)"
49  # This is the canonical definition of the SDK version, which defines
50  # the set of APIs and functionality available in the platform.  It
51  # is a single integer that increases monotonically as updates to
52  # the SDK are released.  It should only be incremented when the APIs for
53  # the new release are frozen (so that developers don't write apps against
54  # intermediate builds).  During development, this number remains at the
55  # SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds
56  # the code-name of the new development work.
57  PLATFORM_SDK_VERSION := 19
58endif
59
60ifeq "" "$(PLATFORM_VERSION_CODENAME)"
61  # This is the current development code-name, if the build is not a final
62  # release build.  If this is a final release build, it is simply "REL".
63  PLATFORM_VERSION_CODENAME := REL
64endif
65
66ifeq "" "$(PLATFORM_SECURITY_PATCH)"
67  # Used to indicate the security patch that has been applied to the device.
68  # Can be an arbitrary string, but must be a single word.
69  #
70  # If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
71  PLATFORM_SECURITY_PATCH := 2016-07-05
72endif
73
74ifeq "" "$(PLATFORM_BASE_OS)"
75  # Used to indicate the base os applied to the device.
76  # Can be an arbitrary string, but must be a single word.
77  #
78  # If there is no $PLATFORM_BASE_OS set, keep it empty.
79  PLATFORM_BASE_OS :=
80endif
81
82ifeq "" "$(DEFAULT_APP_TARGET_SDK)"
83  # This is the default minSdkVersion and targetSdkVersion to use for
84  # all .apks created by the build system.  It can be overridden by explicitly
85  # setting these in the .apk's AndroidManifest.xml.  It is either the code
86  # name of the development build or, if this is a release build, the official
87  # SDK version of this release.
88  ifeq "REL" "$(PLATFORM_VERSION_CODENAME)"
89    DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION)
90  else
91    DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME)
92  endif
93endif
94
95ifeq "" "$(BUILD_ID)"
96  # Used to signify special builds.  E.g., branches and/or releases,
97  # like "M5-RC7".  Can be an arbitrary string, but must be a single
98  # word and a valid file name.
99  #
100  # If there is no BUILD_ID set, make it obvious.
101  BUILD_ID := UNKNOWN
102endif
103
104ifeq "" "$(BUILD_NUMBER)"
105  # BUILD_NUMBER should be set to the source control value that
106  # represents the current state of the source code.  E.g., a
107  # perforce changelist number or a git hash.  Can be an arbitrary string
108  # (to allow for source control that uses something other than numbers),
109  # but must be a single word and a valid file name.
110  #
111  # If no BUILD_NUMBER is set, create a useful "I am an engineering build
112  # from this date/time" value.  Make it start with a non-digit so that
113  # anyone trying to parse it as an integer will probably get "0".
114  BUILD_NUMBER := eng.$(USER).$(shell date +%Y%m%d.%H%M%S)
115endif
116