172 lines
7.8 KiB
Makefile
172 lines
7.8 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_ACONFIG_VALUE_SETS, that sets which aconfig_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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# PRODUCT_RELEASE_CONFIG_MAPS is set by Soong using an initial run of product
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# config to capture only the list of config maps needed by the build.
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# Keep them in the order provided, but remove duplicates.
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$(foreach map,$(PRODUCT_RELEASE_CONFIG_MAPS), \
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$(if $(filter $(map),$(config_map_files)),,$(eval config_map_files += $(map))) \
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)
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# Declare or extend a release-config.
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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 $(2)))
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endef
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# Include the config map files and populate _flag_declaration_files.
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_flag_declaration_files :=
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$(foreach f, $(config_map_files), \
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$(eval FLAG_DECLARATION_FILES:= ) \
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$(eval _included := $(f)) \
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$(eval include $(f)) \
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$(eval _flag_declaration_files += $(FLAG_DECLARATION_FILES)) \
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)
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FLAG_DECLARATION_FILES :=
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ifeq ($(TARGET_RELEASE),)
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# We allow some internal paths to explicitly set TARGET_RELEASE to the
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# empty string. For the most part, 'make' treats unset and empty string as
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# the same. But the following line differentiates, and will only assign
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# if the variable was completely unset.
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TARGET_RELEASE ?= was_unset
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ifeq ($(TARGET_RELEASE),was_unset)
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$(error No release config set for target; please set TARGET_RELEASE, or if building on the command line use 'lunch <target>-<release>-<build_type>', where release is one of: $(_all_release_configs))
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endif
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# Instead of leaving this string empty, we want to default to a valid
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# setting. Full builds coming through this path is a bug, but in case
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# of such a bug, we want to at least get consistent, valid results.
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TARGET_RELEASE = trunk_staging
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endif
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ifeq ($(filter $(_all_release_configs), $(TARGET_RELEASE)),)
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$(error No release config found for TARGET_RELEASE: $(TARGET_RELEASE). Available releases are: $(_all_release_configs))
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endif
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# Choose flag files
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# Don't sort this, use it in the order they gave us.
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# Do allow duplicate entries, retaining only the first usage.
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flag_value_files :=
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$(foreach f,$(_all_release_configs.$(TARGET_RELEASE).FILES), \
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$(if $(filter $(f),$(flag_value_files)),,$(eval flag_value_files += $(f)))\
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)
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# Unset variables so they can't use them
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define declare-release-config
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$(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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# _flag_declaration_files is the combined list of FLAG_DECLARATION_FILES set by
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# release_config_map.mk files above.
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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.scl", "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.scl,$(_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,$(OUT_DIR)/release_config_entrypoint.scl,$(OUT_DIR)/release_config_entrypoint.scl,--allow_external_entrypoint)
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