1 files changed, 73 insertions, 0 deletions
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
new file mode 100644
index 0000000..acd06fa
--- /dev/null
+++ b/core/version_defaults.mk
@@ -0,0 +1,73 @@
+#
+# 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.
+#
+
+#
+# Handle various build version information.
+#
+# Guarantees that the following are defined:
+#     PLATFORM_VERSION
+#     PLATFORM_SDK_VERSION
+#     BUILD_ID
+#     BUILD_NUMBER
+#
+
+# Look for an optional file containing overrides of the defaults,
+# but don't cry if we don't find it.  We could just use -include, but
+# the build.prop target also wants INTERNAL_BUILD_ID_MAKEFILE to be set
+# if the file exists.
+#
+INTERNAL_BUILD_ID_MAKEFILE := $(wildcard $(BUILD_SYSTEM)/build_id.mk)
+ifneq "" "$(INTERNAL_BUILD_ID_MAKEFILE)"
+  include $(INTERNAL_BUILD_ID_MAKEFILE)
+endif
+
+ifeq "" "$(PLATFORM_VERSION)"
+  # 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.
+  PLATFORM_VERSION := 1.0
+endif
+
+ifeq "" "$(PLATFORM_SDK_VERSION)"
+  # This is the canonical definition of the SDK version, which defines
+  # the set of APIs and functionality available in the platform.  This is
+  # a single integer, that increases monotonically as updates to the SDK
+  # are released.
+  PLATFORM_SDK_VERSION := 1
+endif
+
+ifeq "" "$(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
+
+ifeq "" "$(BUILD_NUMBER)"
+  # BUILD_NUMBER should be set to the source control value that
+  # represents the current state of the source code.  E.g., a
+  # perforce changelist number or a git hash.  Can be an arbitrary string
+  # (to allow for source control that uses something other than numbers),
+  # but must be a single word and a valid file name.
+  #
+  # If no BUILD_NUMBER is set, create a useful "I am an engineering build
+  # from this date/time" value.  Make it start with a non-digit so that
+  # anyone trying to parse it as an integer will probably get "0".
+  BUILD_NUMBER := eng.$(USER).$(shell date +%Y%m%d.%H%M%S)
+endif