version_defaults.mk revision f2304ce36778a95793b48fb9ccf83f6b03c19433 
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 := N
47endif
48
49ifeq "" "$(PLATFORM_SDK_VERSION)"
50  # This is the canonical definition of the SDK version, which defines
51  # the set of APIs and functionality available in the platform.  It
52  # is a single integer that increases monotonically as updates to
53  # the SDK are released.  It should only be incremented when the APIs for
54  # the new release are frozen (so that developers don't write apps against
55  # intermediate builds).  During development, this number remains at the
56  # SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds
57  # the code-name of the new development work.
58  PLATFORM_SDK_VERSION := 24
59endif
60
61ifeq "" "$(PLATFORM_JACK_MIN_SDK_VERSION)"
62  # This is definition of the min SDK version given to Jack for the current
63  # platform. For released version it should be the same as
64  # PLATFORM_SDK_VERSION. During development, this number may be incremented
65  # before PLATFORM_SDK_VERSION if the plateform starts to add new java
66  # language supports.
67  PLATFORM_JACK_MIN_SDK_VERSION := 24
68endif
69
70ifeq "" "$(PLATFORM_VERSION_CODENAME)"
71  # This is the current development code-name, if the build is not a final
72  # release build.  If this is a final release build, it is simply "REL".
73  PLATFORM_VERSION_CODENAME := REL
74
75  # This is all of the development codenames that are active.  Should be either
76  # the same as PLATFORM_VERSION_CODENAME or a comma-separated list of additional
77  # codenames after PLATFORM_VERSION_CODENAME.
78  PLATFORM_VERSION_ALL_CODENAMES := $(PLATFORM_VERSION_CODENAME),N
79endif
80
81ifeq "REL" "$(PLATFORM_VERSION_CODENAME)"
82  PLATFORM_PREVIEW_SDK_VERSION := 0
83else
84  ifeq "" "$(PLATFORM_PREVIEW_SDK_VERSION)"
85    # This is the definition of a preview SDK version over and above the current
86    # platform SDK version. Unlike the platform SDK version, a higher value
87    # for preview SDK version does NOT mean that all prior preview APIs are
88    # included. Packages reading this value to determine compatibility with
89    # known APIs should check that this value is precisely equal to the preview
90    # SDK version the package was built for, otherwise it should fall back to
91    # assuming the device can only support APIs as of the previous official
92    # public release.
93    # This value will always be 0 for release builds.
94    PLATFORM_PREVIEW_SDK_VERSION := 0
95  endif
96endif
97
98ifeq "" "$(DEFAULT_APP_TARGET_SDK)"
99  # This is the default minSdkVersion and targetSdkVersion to use for
100  # all .apks created by the build system.  It can be overridden by explicitly
101  # setting these in the .apk's AndroidManifest.xml.  It is either the code
102  # name of the development build or, if this is a release build, the official
103  # SDK version of this release.
104  ifeq "REL" "$(PLATFORM_VERSION_CODENAME)"
105    DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION)
106  else
107    DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME)
108  endif
109endif
110
111ifeq "" "$(PLATFORM_SECURITY_PATCH)"
112  # Used to indicate the security patch that has been applied to the device.
113  # Must be of the form "YYYY-MM-DD" on production devices.
114  #
115  # If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
116  PLATFORM_SECURITY_PATCH := 2016-07-05
117endif
118
119ifeq "" "$(PLATFORM_BASE_OS)"
120  # Used to indicate the base os applied to the device.
121  # Can be an arbitrary string, but must be a single word.
122  #
123  # If there is no $PLATFORM_BASE_OS set, keep it empty.
124  PLATFORM_BASE_OS :=
125endif
126
127ifeq "" "$(BUILD_ID)"
128  # Used to signify special builds.  E.g., branches and/or releases,
129  # like "M5-RC7".  Can be an arbitrary string, but must be a single
130  # word and a valid file name.
131  #
132  # If there is no BUILD_ID set, make it obvious.
133  BUILD_ID := UNKNOWN
134endif
135
136ifeq "" "$(BUILD_DATETIME)"
137  # Used to reproduce builds by setting the same time. Must be the number
138  # of seconds since the Epoch.
139  BUILD_DATETIME := $(shell date +%s)
140endif
141
142ifneq (,$(findstring Darwin,$(shell uname -sm)))
143DATE := date -r $(BUILD_DATETIME)
144else
145DATE := date -d @$(BUILD_DATETIME)
146endif
147
148ifeq "" "$(BUILD_NUMBER)"
149  # BUILD_NUMBER should be set to the source control value that
150  # represents the current state of the source code.  E.g., a
151  # perforce changelist number or a git hash.  Can be an arbitrary string
152  # (to allow for source control that uses something other than numbers),
153  # but must be a single word and a valid file name.
154  #
155  # If no BUILD_NUMBER is set, create a useful "I am an engineering build
156  # from this date/time" value.  Make it start with a non-digit so that
157  # anyone trying to parse it as an integer will probably get "0".
158  BUILD_NUMBER := eng.$(shell echo $${USER:0:6}).$(shell $(DATE) +%Y%m%d.%H%M%S)
159endif
160