1f6555151e
For now (to prevent build breakages when this is submitted), duplicate flag values are allowed, but that will be disallowed once this change automerges everywhere. Bug: 286689485 Test: Treehugger Change-Id: I723340ff9751b61d33c4108b0cc2f90702a116c9
165 lines
7.2 KiB
Makefile
165 lines
7.2 KiB
Makefile
# Copyright (C) 2023 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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# Choose the flag files
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# -----------------------------------------------------------------
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# Release configs are defined in reflease_config_map files, which map
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# the short name (e.g. -next) used in lunch to the starlark files
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# defining the build flag values.
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#
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# (If you're thinking about aconfig flags, there is one build flag,
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# RELEASE_DEVICE_CONFIG_VALUE_SETS, that sets which device_config_value_set
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# module to use to set the aconfig flag values.)
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#
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# The short release config names *can* appear multiple times, to allow
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# for AOSP and vendor specific flags under the same name, but the
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# individual flag values must appear in exactly one config. Vendor
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# does not override AOSP, or anything like that. This is because
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# vendor code usually includes prebuilts, and having vendor compile
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# with different flags from AOSP increases the likelihood of flag
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# mismatch.
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# Do this first, because we're going to unset TARGET_RELEASE before
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# including anyone, so they don't start making conditionals based on it.
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# This logic is in make because starlark doesn't understand optional
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# vendor files.
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# If this is a google source tree, restrict it to only the one file
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# which has OWNERS control. If it isn't let others define their own.
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# TODO: Remove wildcard for build/release one when all branch manifests
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# have updated.
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config_map_files := $(wildcard build/release/release_config_map.mk) \
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$(if $(wildcard vendor/google/release/release_config_map.mk), \
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vendor/google/release/release_config_map.mk, \
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$(sort \
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$(wildcard device/*/release/release_config_map.mk) \
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$(wildcard device/*/*/release/release_config_map.mk) \
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$(wildcard vendor/*/release/release_config_map.mk) \
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$(wildcard vendor/*/*/release/release_config_map.mk) \
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) \
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)
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# $1 config name
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# $2 release config files
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define declare-release-config
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$(if $(strip $(2)),, \
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$(error declare-release-config: config $(strip $(1)) must have release config files) \
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)
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$(eval _all_release_configs := $(sort $(_all_release_configs) $(strip $(1))))
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$(eval _all_release_configs.$(strip $(1)).DECLARED_IN := $(_included) $(_all_release_configs.$(strip $(1)).DECLARED_IN))
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$(eval _all_release_configs.$(strip $(1)).FILES := $(_all_release_configs.$(strip $(1)).FILES) $(strip $(2)))
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endef
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# Include the config map files
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$(foreach f, $(config_map_files), \
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$(eval _included := $(f)) \
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$(eval include $(f)) \
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)
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# If TARGET_RELEASE is set, fail if there is no matching release config
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# If it isn't set, no release config files will be included and all flags
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# will get their default values.
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ifneq ($(TARGET_RELEASE),)
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ifeq ($(filter $(_all_release_configs), $(TARGET_RELEASE)),)
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$(error No release config found for TARGET_RELEASE: $(TARGET_RELEASE). Available releases are: $(_all_release_configs))
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else
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# Choose flag files
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# Don't sort this, use it in the order they gave us.
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flag_value_files := $(_all_release_configs.$(TARGET_RELEASE).FILES)
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endif
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else
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# Useful for finding scripts etc that aren't passing or setting TARGET_RELEASE
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ifneq ($(FAIL_IF_NO_RELEASE_CONFIG),)
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$(error FAIL_IF_NO_RELEASE_CONFIG was set and TARGET_RELEASE was not)
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endif
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flag_value_files :=
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endif
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# Unset variables so they can't use them
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define declare-release-config
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$(error declare-release-config can only be called from inside release_config_map.mk files)
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endef
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# TODO: Remove this check after enough people have sourced lunch that we don't
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# need to worry about it trying to do get_build_vars TARGET_RELEASE. Maybe after ~9/2023
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ifneq ($(CALLED_FROM_SETUP),true)
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define TARGET_RELEASE
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$(error TARGET_RELEASE may not be accessed directly. Use individual flags.)
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endef
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else
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TARGET_RELEASE:=
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endif
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.KATI_READONLY := TARGET_RELEASE
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$(foreach config, $(_all_release_configs), \
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$(eval _all_release_configs.$(config).DECLARED_IN:= ) \
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$(eval _all_release_configs.$(config).FILES:= ) \
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)
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_all_release_configs:=
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config_map_files:=
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# -----------------------------------------------------------------
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# Flag declarations and values
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# -----------------------------------------------------------------
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# This part is in starlark. We generate a root starlark file that loads
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# all of the flags declaration files that we found, and the flag_value_files
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# that we chose from the config map above. Then we run that, and load the
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# results of that into the make environment.
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# If this is a google source tree, restrict it to only the one file
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# which has OWNERS control. If it isn't let others define their own.
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# TODO: Remove wildcard for build/release one when all branch manifests
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# have updated.
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flag_declaration_files := $(wildcard build/release/build_flags.bzl) \
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$(if $(wildcard vendor/google/release/build_flags.bzl), \
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vendor/google/release/build_flags.bzl, \
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$(sort \
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$(wildcard device/*/release/build_flags.bzl) \
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$(wildcard device/*/*/release/build_flags.bzl) \
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$(wildcard vendor/*/release/build_flags.bzl) \
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$(wildcard vendor/*/*/release/build_flags.bzl) \
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) \
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)
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# Because starlark can't find files with $(wildcard), write an entrypoint starlark script that
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# contains the result of the above wildcards for the starlark code to use.
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filename_to_starlark=$(subst /,_,$(subst .,_,$(1)))
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_c:=load("//build/make/core/release_config.bzl", "release_config")
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_c+=$(newline)def add(d, k, v):
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_c+=$(newline)$(space)d = dict(d)
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_c+=$(newline)$(space)d[k] = v
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_c+=$(newline)$(space)return d
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_c+=$(foreach f,$(flag_declaration_files),$(newline)load("$(f)", flags_$(call filename_to_starlark,$(f)) = "flags"))
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_c+=$(newline)all_flags = [] $(foreach f,$(flag_declaration_files),+ [add(x, "declared_in", "$(f)") for x in flags_$(call filename_to_starlark,$(f))])
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_c+=$(foreach f,$(flag_value_files),$(newline)load("//$(f)", values_$(call filename_to_starlark,$(f)) = "values"))
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_c+=$(newline)all_values = [] $(foreach f,$(flag_value_files),+ [add(x, "set_in", "$(f)") for x in values_$(call filename_to_starlark,$(f))])
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_c+=$(newline)variables_to_export_to_make = release_config(all_flags, all_values)
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$(file >$(OUT_DIR)/release_config_entrypoint.bzl,$(_c))
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_c:=
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filename_to_starlark:=
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# Exclude the entrypoint file as a dependency (by passing it as the 2nd argument) so that we don't
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# rerun kati every build. Kati will replay the $(file) command that generates it every build,
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# updating its timestamp.
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#
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# We also need to pass --allow_external_entrypoint to rbcrun in case the OUT_DIR is set to something
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# outside of the source tree.
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$(call run-starlark,$(OUT_DIR)/release_config_entrypoint.bzl,$(OUT_DIR)/release_config_entrypoint.bzl,--allow_external_entrypoint)
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