Define release flags in starlark instead of make
So that we have a more restricted enviornment for this new configuration
axis that can also be imported into other tools more easily.
Test: Manually (this time also tested setting OUT_DIR outside of the tree)
Change-Id: I01d90e06e45cba756156af16f63e04f575877263
diff --git a/core/release_config.bzl b/core/release_config.bzl
new file mode 100644
index 0000000..ecb9ec6
--- /dev/null
+++ b/core/release_config.bzl
@@ -0,0 +1,90 @@
+# Copyright (C) 2023 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.
+
+# Partitions that get build system flag summaries
+_flag_partitions = [
+ "product",
+ "system",
+ "system_ext",
+ "vendor",
+]
+
+def _combine_dicts_no_duplicate_keys(dicts):
+ result = {}
+ for d in dicts:
+ for k, v in d.items():
+ if k in result:
+ fail("Duplicate key: " + k)
+ result[k] = v
+ return result
+
+def release_config(target_release, flag_definitions, config_maps, fail_if_no_release_config = True):
+ result = {
+ "_ALL_RELEASE_FLAGS": [flag.name for flag in flag_definitions],
+ }
+ all_flags = {}
+ for flag in flag_definitions:
+ if sorted(dir(flag)) != ["default", "name", "partitions"]:
+ fail("Flag structs must contain 3 fields: name, partitions, and default")
+ if not flag.partitions:
+ fail("At least 1 partition is required")
+ for partition in flag.partitions:
+ if partition == "all":
+ if len(flag.partitions) > 1:
+ fail("\"all\" can't be combined with other partitions: " + str(flag.partitions))
+ elif partition not in _flag_partitions:
+ fail("Invalid partition: " + flag.partition + ", allowed partitions: " + str(_flag_partitions))
+ if not flag.name.startswith("RELEASE_"):
+ fail("Release flag names must start with RELEASE_")
+ if " " in flag.name or "\t" in flag.name or "\n" in flag.name:
+ fail("Flag names must not contain whitespace.")
+ if flag.name in all_flags:
+ fail("Duplicate declaration of flag " + flag.name)
+ all_flags[flag.name] = True
+
+ default = flag.default
+ if type(default) == "bool":
+ default = "true" if default else ""
+
+ result["_ALL_RELEASE_FLAGS." + flag.name + ".PARTITIONS"] = flag.partitions
+ result["_ALL_RELEASE_FLAGS." + flag.name + ".DEFAULT"] = default
+ result["_ALL_RELEASE_FLAGS." + flag.name + ".VALUE"] = default
+
+ # If TARGET_RELEASE is set, fail if there is no matching release config
+ # If it isn't set, no release config files will be included and all flags
+ # will get their default values.
+ if target_release:
+ config_map = _combine_dicts_no_duplicate_keys(config_maps)
+ if target_release not in config_map:
+ fail("No release config found for TARGET_RELEASE: " + target_release + ". Available releases are: " + str(config_map.keys()))
+ release_config = config_map[target_release]
+ if sorted(dir(release_config)) != ["flags", "release_version"]:
+ fail("A release config must be a struct with a flags and release_version fields")
+ result["_RELEASE_VERSION"] = release_config.release_version
+ for flag in release_config.flags:
+ if sorted(dir(flag)) != ["name", "value"]:
+ fail("A flag must be a struct with name and value fields, got: " + str(sorted(dir(flag))))
+ if flag.name not in all_flags:
+ fail("Undeclared build flag: " + flag.name)
+ value = flag.value
+ if type(value) == "bool":
+ value = "true" if value else ""
+ result["_ALL_RELEASE_FLAGS." + flag.name + ".VALUE"] = value
+ elif fail_if_no_release_config:
+ fail("FAIL_IF_NO_RELEASE_CONFIG was set and TARGET_RELEASE was not")
+ else:
+ # No TARGET_RELEASE means release version 0
+ result["_RELEASE_VERSION"] = 0
+
+ return result