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Commit 1335903d authored by Sasha Smundak's avatar Sasha Smundak
Browse files

Move the stable code from version_defaults.mk to version_util.mk. 

With version_defaults.mk containing only simple assignments, it can be
automatically converted to Starlark.
This is a cherrypick of ag/15768054

Bug: 198995713
Test: treehugger
Merged-In: I4798fb69c639e6d52d275a5b793fa0c8ba876202
Change-Id: I17fab2e46c085fc4c07ae13c5e8cfb439097c634
parent 1ab1c2ff

core/version_defaults.mk

+7 −227
Original line number Diff line number Diff line
@@ -40,51 +40,10 @@ ifdef INTERNAL_BUILD_ID_MAKEFILE 
endif



DEFAULT_PLATFORM_VERSION := TP1A

.KATI_READONLY := DEFAULT_PLATFORM_VERSION

MIN_PLATFORM_VERSION := TP1A

MAX_PLATFORM_VERSION := TP1A



ALLOWED_VERSIONS := $(call allowed-platform-versions,\

  $(MIN_PLATFORM_VERSION),\

  $(MAX_PLATFORM_VERSION),\

  $(DEFAULT_PLATFORM_VERSION))



ifndef TARGET_PLATFORM_VERSION

  TARGET_PLATFORM_VERSION := $(DEFAULT_PLATFORM_VERSION)

endif



ifeq (,$(filter $(ALLOWED_VERSIONS), $(TARGET_PLATFORM_VERSION)))

  $(warning Invalid TARGET_PLATFORM_VERSION '$(TARGET_PLATFORM_VERSION)', must be one of)

  $(error $(ALLOWED_VERSIONS))

endif

ALLOWED_VERSIONS :=

MIN_PLATFORM_VERSION :=

MAX_PLATFORM_VERSION :=



.KATI_READONLY := \

  DEFAULT_PLATFORM_VERSION \

  TARGET_PLATFORM_VERSION



# Default versions for each TARGET_PLATFORM_VERSION

# TODO: PLATFORM_VERSION, PLATFORM_SDK_VERSION, etc. should be conditional

# on this



# 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.



# When you change PLATFORM_VERSION for a given PLATFORM_SDK_VERSION

# please add that PLATFORM_VERSION as well as clean up obsolete PLATFORM_VERSION's

# in the following text file:

# cts/tests/tests/os/assets/platform_versions.txt



# Note that there should be one PLATFORM_VERSION and PLATFORM_VERSION_CODENAME

# entry for each unreleased API level, regardless of

# MIN_PLATFORM_VERSION/MAX_PLATFORM_VERSION. PLATFORM_VERSION is used to

# generate the range of allowed SDK versions, so it must have an entry for every

# unreleased API level targetable by this branch, not just those that are valid

# lunch targets for this branch.



# The last stable version name of the platform that was released.  During

# development, this stays at that previous version, while the codename indicates

# further work based on the previous version.
@@ -96,49 +55,6 @@ PLATFORM_VERSION_LAST_STABLE := 11 
PLATFORM_VERSION_CODENAME.SP1A := S

PLATFORM_VERSION_CODENAME.TP1A := Tiramisu



ifndef PLATFORM_VERSION_CODENAME

  PLATFORM_VERSION_CODENAME := $(PLATFORM_VERSION_CODENAME.$(TARGET_PLATFORM_VERSION))

  ifndef PLATFORM_VERSION_CODENAME

    # PLATFORM_VERSION_CODENAME falls back to TARGET_PLATFORM_VERSION

    PLATFORM_VERSION_CODENAME := $(TARGET_PLATFORM_VERSION)

  endif



  # This is all of the *active* development codenames.

  # This confusing name is needed because

  # all_codenames has been baked into build.prop for ages.

  #

  # Should be either the same as PLATFORM_VERSION_CODENAME or a comma-separated

  # list of additional codenames after PLATFORM_VERSION_CODENAME.

  PLATFORM_VERSION_ALL_CODENAMES :=



  # Build a list of all active code names. Avoid duplicates, and stop when we

  # reach a codename that matches PLATFORM_VERSION_CODENAME (anything beyond

  # that is not included in our build).

  _versions_in_target := \

    $(call find_and_earlier,$(ALL_VERSIONS),$(TARGET_PLATFORM_VERSION))

  $(foreach version,$(_versions_in_target),\

    $(eval _codename := $(PLATFORM_VERSION_CODENAME.$(version)))\

    $(if $(filter $(_codename),$(PLATFORM_VERSION_ALL_CODENAMES)),,\

      $(eval PLATFORM_VERSION_ALL_CODENAMES += $(_codename))))



  # And convert from space separated to comma separated.

  PLATFORM_VERSION_ALL_CODENAMES := \

    $(subst $(space),$(comma),$(strip $(PLATFORM_VERSION_ALL_CODENAMES)))



endif

.KATI_READONLY := \

  PLATFORM_VERSION_CODENAME \

  PLATFORM_VERSION_ALL_CODENAMES



ifndef PLATFORM_VERSION

  ifeq (REL,$(PLATFORM_VERSION_CODENAME))

      PLATFORM_VERSION := $(PLATFORM_VERSION_LAST_STABLE)

  else

      PLATFORM_VERSION := $(PLATFORM_VERSION_CODENAME)

  endif

endif

.KATI_READONLY := PLATFORM_VERSION



ifndef PLATFORM_SDK_VERSION

  # This is the canonical definition of the SDK version, which defines

  # the set of APIs and functionality available in the platform.  It
@@ -157,89 +73,13 @@ endif 
.KATI_READONLY := PLATFORM_SDK_VERSION



# This is the sdk extension version of this tree.

PLATFORM_SDK_EXTENSION_VERSION :=$= 0



# This is the sdk extension version that PLATFORM_SDK_VERSION ships with.

PLATFORM_BASE_SDK_EXTENSION_VERSION :=$= 0

PLATFORM_SDK_EXTENSION_VERSION := 0

.KATI_READONLY := PLATFORM_SDK_EXTENSION_VERSION



ifeq (REL,$(PLATFORM_VERSION_CODENAME))

  PLATFORM_PREVIEW_SDK_VERSION := 0

else

  ifndef PLATFORM_PREVIEW_SDK_VERSION

    # This is the definition of a preview SDK version over and above the current

    # platform SDK version. Unlike the platform SDK version, a higher value

    # for preview SDK version does NOT mean that all prior preview APIs are

    # included. Packages reading this value to determine compatibility with

    # known APIs should check that this value is precisely equal to the preview

    # SDK version the package was built for, otherwise it should fall back to

    # assuming the device can only support APIs as of the previous official

    # public release.

    # This value will always be forced to 0 for release builds by the logic

    # in the "ifeq" block above, so the value below will be used on any

    # non-release builds, and it should always be at least 1, to indicate that

    # APIs may have changed since the claimed PLATFORM_SDK_VERSION.

    PLATFORM_PREVIEW_SDK_VERSION := 1

  endif

endif

.KATI_READONLY := PLATFORM_PREVIEW_SDK_VERSION



ifndef DEFAULT_APP_TARGET_SDK

  # This is the default minSdkVersion and targetSdkVersion to use for

  # all .apks created by the build system.  It can be overridden by explicitly

  # setting these in the .apk's AndroidManifest.xml.  It is either the code

  # name of the development build or, if this is a release build, the official

  # SDK version of this release.

  ifeq (REL,$(PLATFORM_VERSION_CODENAME))

    DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION)

  else

    DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME)

  endif

endif

.KATI_READONLY := DEFAULT_APP_TARGET_SDK



ifndef PLATFORM_VNDK_VERSION

  # This is the definition of the VNDK version for the current VNDK libraries.

  # The version is only available when PLATFORM_VERSION_CODENAME == REL.

  # Otherwise, it will be set to a CODENAME version. The ABI is allowed to be

  # changed only before the Android version is released. Once

  # PLATFORM_VNDK_VERSION is set to actual version, the ABI for this version

  # will be frozon and emit build errors if any ABI for the VNDK libs are

  # changed.

  # After that the snapshot of the VNDK with this version will be generated.

  #

  # The VNDK version follows PLATFORM_SDK_VERSION.

  ifeq (REL,$(PLATFORM_VERSION_CODENAME))

    PLATFORM_VNDK_VERSION := $(PLATFORM_SDK_VERSION)

  else

    PLATFORM_VNDK_VERSION := $(PLATFORM_VERSION_CODENAME)

  endif

endif

.KATI_READONLY := PLATFORM_VNDK_VERSION



ifndef PLATFORM_SYSTEMSDK_MIN_VERSION

  # This is the oldest version of system SDK that the platform supports. Contrary

  # to the public SDK where platform essentially supports all previous SDK versions,

  # platform supports only a few number of recent system SDK versions as some of

  # old system APIs are gradually deprecated, removed and then deleted.

  PLATFORM_SYSTEMSDK_MIN_VERSION := 28

endif

.KATI_READONLY := PLATFORM_SYSTEMSDK_MIN_VERSION



# This is the list of system SDK versions that the current platform supports.

PLATFORM_SYSTEMSDK_VERSIONS :=

ifneq (,$(PLATFORM_SYSTEMSDK_MIN_VERSION))

  $(if $(call math_is_number,$(PLATFORM_SYSTEMSDK_MIN_VERSION)),,\

    $(error PLATFORM_SYSTEMSDK_MIN_VERSION must be a number, but was $(PLATFORM_SYSTEMSDK_MIN_VERSION)))

  PLATFORM_SYSTEMSDK_VERSIONS := $(call int_range_list,$(PLATFORM_SYSTEMSDK_MIN_VERSION),$(PLATFORM_SDK_VERSION))

endif

# Platform always supports the current version

ifeq (REL,$(PLATFORM_VERSION_CODENAME))

  PLATFORM_SYSTEMSDK_VERSIONS += $(PLATFORM_SDK_VERSION)

else

  PLATFORM_SYSTEMSDK_VERSIONS += $(subst $(comma),$(space),$(PLATFORM_VERSION_ALL_CODENAMES))

endif

PLATFORM_SYSTEMSDK_VERSIONS := $(strip $(sort $(PLATFORM_SYSTEMSDK_VERSIONS)))

.KATI_READONLY := PLATFORM_SYSTEMSDK_VERSIONS

# This is the sdk extension version that PLATFORM_SDK_VERSION ships with.

PLATFORM_BASE_SDK_EXTENSION_VERSION := 0

.KATI_READONLY := PLATFORM_BASE_SDK_EXTENSION_VERSION



ifndef PLATFORM_SECURITY_PATCH

    #  Used to indicate the security patch that has been applied to the device.
@@ -251,65 +91,5 @@ ifndef PLATFORM_SECURITY_PATCH 
endif

.KATI_READONLY := PLATFORM_SECURITY_PATCH



ifndef PLATFORM_SECURITY_PATCH_TIMESTAMP

  # Used to indicate the matching timestamp for the security patch string in PLATFORM_SECURITY_PATCH.

  PLATFORM_SECURITY_PATCH_TIMESTAMP := $(shell date -d 'TZ="GMT" $(PLATFORM_SECURITY_PATCH)' +%s)

endif

.KATI_READONLY := PLATFORM_SECURITY_PATCH_TIMESTAMP



ifndef PLATFORM_BASE_OS

  # Used to indicate the base os applied to the device.

  # Can be an arbitrary string, but must be a single word.

  #

  # If there is no $PLATFORM_BASE_OS set, keep it empty.

  PLATFORM_BASE_OS :=

endif

.KATI_READONLY := PLATFORM_BASE_OS



ifndef 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

.KATI_READONLY := BUILD_ID



ifndef BUILD_DATETIME

  # Used to reproduce builds by setting the same time. Must be the number

  # of seconds since the Epoch.

  BUILD_DATETIME := $(shell date +%s)

endif

include $(BUILD_SYSTEM)/version_util.mk

DATE := date -d @$(BUILD_DATETIME)

.KATI_READONLY := DATE



# Everything should be using BUILD_DATETIME_FROM_FILE instead.

# BUILD_DATETIME and DATE can be removed once BUILD_NUMBER moves

# to soong_ui.

$(KATI_obsolete_var BUILD_DATETIME,Use BUILD_DATETIME_FROM_FILE)



HAS_BUILD_NUMBER := true

ifndef 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.$(shell echo $${BUILD_USERNAME:0:6}).$(shell $(DATE) +%Y%m%d.%H%M%S)

  HAS_BUILD_NUMBER := false

endif

.KATI_READONLY := BUILD_NUMBER HAS_BUILD_NUMBER



ifndef PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION

  # Used to set minimum supported target sdk version. Apps targeting sdk

  # version lower than the set value will result in a warning being shown

  # when any activity from the app is started.

  PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION := 23

endif

.KATI_READONLY := PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION

core/version_util.mk

0 → 100644
+245 −0
Original line number Diff line number Diff line 
#

# 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.

#



#



ALLOWED_VERSIONS := $(call allowed-platform-versions,\

  $(MIN_PLATFORM_VERSION),\

  $(MAX_PLATFORM_VERSION),\

  $(DEFAULT_PLATFORM_VERSION))



ifndef TARGET_PLATFORM_VERSION

  TARGET_PLATFORM_VERSION := $(DEFAULT_PLATFORM_VERSION)

endif



ifeq (,$(filter $(ALLOWED_VERSIONS), $(TARGET_PLATFORM_VERSION)))

  $(warning Invalid TARGET_PLATFORM_VERSION '$(TARGET_PLATFORM_VERSION)', must be one of)

  $(error $(ALLOWED_VERSIONS))

endif

ALLOWED_VERSIONS :=

MIN_PLATFORM_VERSION :=

MAX_PLATFORM_VERSION :=



.KATI_READONLY := TARGET_PLATFORM_VERSION



# Default versions for each TARGET_PLATFORM_VERSION

# TODO: PLATFORM_VERSION, PLATFORM_SDK_VERSION, etc. should be conditional

# on this



# 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.



# When you change PLATFORM_VERSION for a given PLATFORM_SDK_VERSION

# please add that PLATFORM_VERSION as well as clean up obsolete PLATFORM_VERSION's

# in the following text file:

# cts/tests/tests/os/assets/platform_versions.txt



# Note that there should be one PLATFORM_VERSION and PLATFORM_VERSION_CODENAME

# entry for each unreleased API level, regardless of

# MIN_PLATFORM_VERSION/MAX_PLATFORM_VERSION. PLATFORM_VERSION is used to

# generate the range of allowed SDK versions, so it must have an entry for every

# unreleased API level targetable by this branch, not just those that are valid

# lunch targets for this branch.



ifndef PLATFORM_VERSION_CODENAME

  PLATFORM_VERSION_CODENAME := $(PLATFORM_VERSION_CODENAME.$(TARGET_PLATFORM_VERSION))

  ifndef PLATFORM_VERSION_CODENAME

    # PLATFORM_VERSION_CODENAME falls back to TARGET_PLATFORM_VERSION

    PLATFORM_VERSION_CODENAME := $(TARGET_PLATFORM_VERSION)

  endif



  # This is all of the *active* development codenames.

  # This confusing name is needed because

  # all_codenames has been baked into build.prop for ages.

  #

  # Should be either the same as PLATFORM_VERSION_CODENAME or a comma-separated

  # list of additional codenames after PLATFORM_VERSION_CODENAME.

  PLATFORM_VERSION_ALL_CODENAMES :=



  # Build a list of all active code names. Avoid duplicates, and stop when we

  # reach a codename that matches PLATFORM_VERSION_CODENAME (anything beyond

  # that is not included in our build).

  _versions_in_target := \

    $(call find_and_earlier,$(ALL_VERSIONS),$(TARGET_PLATFORM_VERSION))

  $(foreach version,$(_versions_in_target),\

    $(eval _codename := $(PLATFORM_VERSION_CODENAME.$(version)))\

    $(if $(filter $(_codename),$(PLATFORM_VERSION_ALL_CODENAMES)),,\

      $(eval PLATFORM_VERSION_ALL_CODENAMES += $(_codename))))



  # And convert from space separated to comma separated.

  PLATFORM_VERSION_ALL_CODENAMES := \

    $(subst $(space),$(comma),$(strip $(PLATFORM_VERSION_ALL_CODENAMES)))



endif

.KATI_READONLY := \

  PLATFORM_VERSION_CODENAME \

  PLATFORM_VERSION_ALL_CODENAMES



ifndef PLATFORM_VERSION

  ifeq (REL,$(PLATFORM_VERSION_CODENAME))

      PLATFORM_VERSION := $(PLATFORM_VERSION_LAST_STABLE)

  else

      PLATFORM_VERSION := $(PLATFORM_VERSION_CODENAME)

  endif

endif

.KATI_READONLY := PLATFORM_VERSION





ifeq (REL,$(PLATFORM_VERSION_CODENAME))

  PLATFORM_PREVIEW_SDK_VERSION := 0

else

  ifndef PLATFORM_PREVIEW_SDK_VERSION

    # This is the definition of a preview SDK version over and above the current

    # platform SDK version. Unlike the platform SDK version, a higher value

    # for preview SDK version does NOT mean that all prior preview APIs are

    # included. Packages reading this value to determine compatibility with

    # known APIs should check that this value is precisely equal to the preview

    # SDK version the package was built for, otherwise it should fall back to

    # assuming the device can only support APIs as of the previous official

    # public release.

    # This value will always be forced to 0 for release builds by the logic

    # in the "ifeq" block above, so the value below will be used on any

    # non-release builds, and it should always be at least 1, to indicate that

    # APIs may have changed since the claimed PLATFORM_SDK_VERSION.

    PLATFORM_PREVIEW_SDK_VERSION := 1

  endif

endif

.KATI_READONLY := PLATFORM_PREVIEW_SDK_VERSION



ifndef DEFAULT_APP_TARGET_SDK

  # This is the default minSdkVersion and targetSdkVersion to use for

  # all .apks created by the build system.  It can be overridden by explicitly

  # setting these in the .apk's AndroidManifest.xml.  It is either the code

  # name of the development build or, if this is a release build, the official

  # SDK version of this release.

  ifeq (REL,$(PLATFORM_VERSION_CODENAME))

    DEFAULT_APP_TARGET_SDK := $(PLATFORM_SDK_VERSION)

  else

    DEFAULT_APP_TARGET_SDK := $(PLATFORM_VERSION_CODENAME)

  endif

endif

.KATI_READONLY := DEFAULT_APP_TARGET_SDK



ifndef PLATFORM_VNDK_VERSION

  # This is the definition of the VNDK version for the current VNDK libraries.

  # The version is only available when PLATFORM_VERSION_CODENAME == REL.

  # Otherwise, it will be set to a CODENAME version. The ABI is allowed to be

  # changed only before the Android version is released. Once

  # PLATFORM_VNDK_VERSION is set to actual version, the ABI for this version

  # will be frozon and emit build errors if any ABI for the VNDK libs are

  # changed.

  # After that the snapshot of the VNDK with this version will be generated.

  #

  # The VNDK version follows PLATFORM_SDK_VERSION.

  ifeq (REL,$(PLATFORM_VERSION_CODENAME))

    PLATFORM_VNDK_VERSION := $(PLATFORM_SDK_VERSION)

  else

    PLATFORM_VNDK_VERSION := $(PLATFORM_VERSION_CODENAME)

  endif

endif

.KATI_READONLY := PLATFORM_VNDK_VERSION



ifndef PLATFORM_SYSTEMSDK_MIN_VERSION

  # This is the oldest version of system SDK that the platform supports. Contrary

  # to the public SDK where platform essentially supports all previous SDK versions,

  # platform supports only a few number of recent system SDK versions as some of

  # old system APIs are gradually deprecated, removed and then deleted.

  PLATFORM_SYSTEMSDK_MIN_VERSION := 28

endif

.KATI_READONLY := PLATFORM_SYSTEMSDK_MIN_VERSION



# This is the list of system SDK versions that the current platform supports.

PLATFORM_SYSTEMSDK_VERSIONS :=

ifneq (,$(PLATFORM_SYSTEMSDK_MIN_VERSION))

  $(if $(call math_is_number,$(PLATFORM_SYSTEMSDK_MIN_VERSION)),,\

    $(error PLATFORM_SYSTEMSDK_MIN_VERSION must be a number, but was $(PLATFORM_SYSTEMSDK_MIN_VERSION)))

  PLATFORM_SYSTEMSDK_VERSIONS := $(call int_range_list,$(PLATFORM_SYSTEMSDK_MIN_VERSION),$(PLATFORM_SDK_VERSION))

endif

# Platform always supports the current version

ifeq (REL,$(PLATFORM_VERSION_CODENAME))

  PLATFORM_SYSTEMSDK_VERSIONS += $(PLATFORM_SDK_VERSION)

else

  PLATFORM_SYSTEMSDK_VERSIONS += $(subst $(comma),$(space),$(PLATFORM_VERSION_ALL_CODENAMES))

endif

PLATFORM_SYSTEMSDK_VERSIONS := $(strip $(sort $(PLATFORM_SYSTEMSDK_VERSIONS)))

.KATI_READONLY := PLATFORM_SYSTEMSDK_VERSIONS



.KATI_READONLY := PLATFORM_SECURITY_PATCH



ifndef PLATFORM_SECURITY_PATCH_TIMESTAMP

  # Used to indicate the matching timestamp for the security patch string in PLATFORM_SECURITY_PATCH.

  PLATFORM_SECURITY_PATCH_TIMESTAMP := $(shell date -d 'TZ="GMT" $(PLATFORM_SECURITY_PATCH)' +%s)

endif

.KATI_READONLY := PLATFORM_SECURITY_PATCH_TIMESTAMP



ifndef PLATFORM_BASE_OS

  # Used to indicate the base os applied to the device.

  # Can be an arbitrary string, but must be a single word.

  #

  # If there is no $PLATFORM_BASE_OS set, keep it empty.

  PLATFORM_BASE_OS :=

endif

.KATI_READONLY := PLATFORM_BASE_OS



ifndef 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

.KATI_READONLY := BUILD_ID



ifndef BUILD_DATETIME

  # Used to reproduce builds by setting the same time. Must be the number

  # of seconds since the Epoch.

  BUILD_DATETIME := $(shell date +%s)

endif



DATE := date -d @$(BUILD_DATETIME)

.KATI_READONLY := DATE



# Everything should be using BUILD_DATETIME_FROM_FILE instead.

# BUILD_DATETIME and DATE can be removed once BUILD_NUMBER moves

# to soong_ui.

$(KATI_obsolete_var BUILD_DATETIME,Use BUILD_DATETIME_FROM_FILE)



HAS_BUILD_NUMBER := true

ifndef 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.$(shell echo $${BUILD_USERNAME:0:6}).$(shell $(DATE) +%Y%m%d.%H%M%S)

  HAS_BUILD_NUMBER := false

endif

.KATI_READONLY := BUILD_NUMBER HAS_BUILD_NUMBER



ifndef PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION

  # Used to set minimum supported target sdk version. Apps targeting sdk

  # version lower than the set value will result in a warning being shown

  # when any activity from the app is started.

  PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION := 23

endif

.KATI_READONLY := PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION