121 lines
4.8 KiB
Makefile
121 lines
4.8 KiB
Makefile
#
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# Copyright (C) 2008 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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#
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# Handle various build version information.
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#
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# Guarantees that the following are defined:
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# PLATFORM_VERSION
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# PLATFORM_SDK_VERSION
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# PLATFORM_VERSION_CODENAME
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# DEFAULT_APP_TARGET_SDK
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# BUILD_ID
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# BUILD_NUMBER
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#
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# Look for an optional file containing overrides of the defaults,
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# but don't cry if we don't find it. We could just use -include, but
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# the build.prop target also wants INTERNAL_BUILD_ID_MAKEFILE to be set
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# if the file exists.
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#
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INTERNAL_BUILD_ID_MAKEFILE := $(wildcard $(BUILD_SYSTEM)/build_id.mk)
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ifneq "" "$(INTERNAL_BUILD_ID_MAKEFILE)"
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include $(INTERNAL_BUILD_ID_MAKEFILE)
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endif
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ifeq "" "$(PLATFORM_VERSION)"
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# This is the canonical definition of the platform version,
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# which is the version that we reveal to the end user.
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# Update this value when the platform version changes (rather
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# than overriding it somewhere else). Can be an arbitrary string.
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PLATFORM_VERSION := M
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endif
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ifeq "" "$(PLATFORM_SDK_VERSION)"
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# This is the canonical definition of the SDK version, which defines
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# the set of APIs and functionality available in the platform. It
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# is a single integer that increases monotonically as updates to
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# the SDK are released. It should only be incremented when the APIs for
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# the new release are frozen (so that developers don't write apps against
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# intermediate builds). During development, this number remains at the
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# SDK version the branch is based on and PLATFORM_VERSION_CODENAME holds
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# the code-name of the new development work.
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PLATFORM_SDK_VERSION := 23
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endif
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ifeq "" "$(PLATFORM_VERSION_CODENAME)"
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# This is the current development code-name, if the build is not a final
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# release build. If this is a final release build, it is simply "REL".
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PLATFORM_VERSION_CODENAME := MNC
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# This is all of the development codenames that are active. Should be either
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# the same as PLATFORM_VERSION_CODENAME or a comma-separated list of additional
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# codenames after PLATFORM_VERSION_CODENAME.
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PLATFORM_VERSION_ALL_CODENAMES := $(PLATFORM_VERSION_CODENAME)
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endif
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ifeq "REL" "$(PLATFORM_VERSION_CODENAME)"
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PLATFORM_PREVIEW_SDK_VERSION := 0
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else
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ifeq "" "$(PLATFORM_PREVIEW_SDK_VERSION)"
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# This is the definition of a preview SDK version over and above the current
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# platform SDK version. Unlike the platform SDK version, a higher value
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# for preview SDK version does NOT mean that all prior preview APIs are
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# included. Packages reading this value to determine compatibility with
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# known APIs should check that this value is precisely equal to the preview
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# SDK version the package was built for, otherwise it should fall back to
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# assuming the device can only support APIs as of the previous official
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# public release.
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# This value will always be 0 for release builds.
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PLATFORM_PREVIEW_SDK_VERSION := 3
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endif
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endif
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ifeq "" "$(DEFAULT_APP_TARGET_SDK)"
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# This is the default minSdkVersion and targetSdkVersion to use for
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# all .apks created by the build system. It can be overridden by explicitly
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# setting these in the .apk's AndroidManifest.xml. It is either the code
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# name of the development build or, if this is a release build, the official
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# SDK version of this release.
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ifeq "REL" "$(PLATFORM_VERSION_CODENAME)"
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DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION)
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else
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DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME)
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endif
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endif
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ifeq "" "$(BUILD_ID)"
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# Used to signify special builds. E.g., branches and/or releases,
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# like "M5-RC7". Can be an arbitrary string, but must be a single
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# word and a valid file name.
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#
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# If there is no BUILD_ID set, make it obvious.
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BUILD_ID := UNKNOWN
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endif
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ifeq "" "$(BUILD_NUMBER)"
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# BUILD_NUMBER should be set to the source control value that
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# represents the current state of the source code. E.g., a
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# perforce changelist number or a git hash. Can be an arbitrary string
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# (to allow for source control that uses something other than numbers),
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# but must be a single word and a valid file name.
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#
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# If no BUILD_NUMBER is set, create a useful "I am an engineering build
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# from this date/time" value. Make it start with a non-digit so that
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# anyone trying to parse it as an integer will probably get "0".
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BUILD_NUMBER := eng.$(USER).$(shell date +%Y%m%d.%H%M%S)
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endif
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