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bazel: Provide backend collections as dicts
Implements the pattern suggested in https://pigweed.dev/bazel_compatibility.html#provide-default-backend-collections-as-dicts. See http://pwrev.dev/219871 for an example of how this is intended to be used. We'll probably remove the merge_flags_for_transition_impl and merge_flags_for_transition_outputs helpers once we've migrated to platform-based flags. Bug: 344654805 Change-Id: Id93bfee331e37b261a5d4d788093d4f927ed2ba1 Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/219911 Lint: Ted Pudlik <tpudlik@google.com> Reviewed-by: Taylor Cramer <cramertj@google.com> Commit-Queue: Ted Pudlik <tpudlik@google.com>
This commit is contained in:
Ted Pudlik
CQ Bot Account
parent
4a79fe82a3
commit
db3b2adb2d
51
pw_build/merge_flags.bzl
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51
pw_build/merge_flags.bzl
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@ -0,0 +1,51 @@
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# Copyright 2024 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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"""Functions for merging flags for platforms and transitions."""
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def merge_flags(base, override):
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"""Merge flags for platforms.
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See https://pigweed.dev/bazel_compatibility.html#provide-default-backend-collections-as-dicts
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for a usage example.
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Args:
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base: Dict of flags to use as the starting point. Typically one of
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the dictionaries provided in @pigweed//pw_build:backends.bzl.
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override: Dict of overrides or additions to the base dict.
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Returns:
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A list of flags in a format accepted by the `flags` attribute of `platform`.
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"""
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flags = base | override
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return ["--{}={}".format(k, v) for k, v in flags.items()]
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def merge_flags_for_transition_impl(base, override):
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"""Merge flags for a transition's impl function.
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Args:
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base: Dict of flags to use as the starting point. Typically one of
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the dictionaries provided in @pigweed//pw_build:backends.bzl.
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override: Dict of overrides or additions to the base dict.
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"""
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return base | override
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def merge_flags_for_transition_outputs(base, override):
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"""Merge flags for a transition's output function.
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Args:
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base: Dict of flags to use as the starting point. Typically one of
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the dictionaries provided in @pigweed//pw_build:backends.bzl.
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override: Dict of overrides or additions to the base dict.
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"""
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return (base | override).keys()
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@ -14,68 +14,43 @@
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"""Bazel transitions for the rp2040."""
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load("//pw_build:merge_flags.bzl", "merge_flags_for_transition_impl", "merge_flags_for_transition_outputs")
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load("//third_party/freertos:flags.bzl", "FREERTOS_FLAGS")
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# LINT.IfChange
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# Typical RP2040 pw_system backends and other platform configuration flags.
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RP2040_SYSTEM_FLAGS = FREERTOS_FLAGS | {
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"@freertos//:freertos_config": "@pigweed//targets/rp2040:freertos_config",
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"@pico-sdk//bazel/config:PICO_STDIO_UART": True,
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"@pico-sdk//bazel/config:PICO_STDIO_USB": True,
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"@pigweed//pw_assert:backend": "@pigweed//pw_assert_basic",
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"@pigweed//pw_assert:backend_impl": "@pigweed//pw_assert_basic:impl",
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"@pigweed//pw_assert:check_backend": "@pigweed//pw_assert_basic",
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"@pigweed//pw_assert:check_backend_impl": "@pigweed//pw_assert_basic:impl",
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"@pigweed//pw_interrupt:backend": "@pigweed//pw_interrupt_cortex_m:context",
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"@pigweed//pw_log:backend": "@pigweed//pw_log_tokenized",
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"@pigweed//pw_log:backend_impl": "@pigweed//pw_log_tokenized:impl",
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"@pigweed//pw_log_tokenized:handler_backend": "@pigweed//pw_system:log_backend",
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"@pigweed//pw_sys_io:backend": "@pigweed//pw_sys_io_rp2040",
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"@pigweed//pw_system:extra_platform_libs": "@pigweed//targets/rp2040:extra_platform_libs",
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"@pigweed//pw_unit_test:main": "@pigweed//targets/rp2040:unit_test_app",
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}
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# Additional flags specific to the upstream Pigweed RP2040 platform.
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_rp2040_flags = {
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"//command_line_option:platforms": "@pigweed//targets/rp2040",
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}
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# LINT.ThenChange(//.bazelrc)
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def _rp2040_transition_impl(settings, attr):
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# buildifier: disable=unused-variable
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_ignore = settings, attr
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return {
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"//command_line_option:platforms": "@pigweed//targets/rp2040",
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"@freertos//:freertos_config": "@pigweed//targets/rp2040:freertos_config",
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"@pico-sdk//bazel/config:PICO_STDIO_UART": True,
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"@pico-sdk//bazel/config:PICO_STDIO_USB": True,
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"@pigweed//pw_assert:backend": "@pigweed//pw_assert_basic",
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"@pigweed//pw_assert:backend_impl": "@pigweed//pw_assert_basic:impl",
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"@pigweed//pw_assert:check_backend": "@pigweed//pw_assert_basic",
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"@pigweed//pw_assert:check_backend_impl": "@pigweed//pw_assert_basic:impl",
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"@pigweed//pw_interrupt:backend": "@pigweed//pw_interrupt_cortex_m:context",
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"@pigweed//pw_log:backend": "@pigweed//pw_log_tokenized",
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"@pigweed//pw_log:backend_impl": "@pigweed//pw_log_tokenized:impl",
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"@pigweed//pw_log_tokenized:handler_backend": "@pigweed//pw_system:log_backend",
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"@pigweed//pw_sync:binary_semaphore_backend": "@pigweed//pw_sync_freertos:binary_semaphore",
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"@pigweed//pw_sync:interrupt_spin_lock_backend": "@pigweed//pw_sync_freertos:interrupt_spin_lock",
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"@pigweed//pw_sync:mutex_backend": "@pigweed//pw_sync_freertos:mutex",
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"@pigweed//pw_sync:thread_notification_backend": "@pigweed//pw_sync_freertos:thread_notification",
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"@pigweed//pw_sync:timed_thread_notification_backend": "@pigweed//pw_sync_freertos:timed_thread_notification",
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"@pigweed//pw_sys_io:backend": "@pigweed//pw_sys_io_rp2040",
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"@pigweed//pw_system:extra_platform_libs": "@pigweed//targets/rp2040:extra_platform_libs",
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"@pigweed//pw_thread:id_backend": "@pigweed//pw_thread_freertos:id",
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"@pigweed//pw_thread:iteration_backend": "@pigweed//pw_thread_freertos:thread_iteration",
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"@pigweed//pw_thread:sleep_backend": "@pigweed//pw_thread_freertos:sleep",
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"@pigweed//pw_thread:thread_backend": "@pigweed//pw_thread_freertos:thread",
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"@pigweed//pw_unit_test:main": "@pigweed//targets/rp2040:unit_test_app",
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}
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# LINT.ThenChange(//.bazelrc)
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return merge_flags_for_transition_impl(base = RP2040_SYSTEM_FLAGS, override = _rp2040_flags)
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_rp2040_transition = transition(
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implementation = _rp2040_transition_impl,
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inputs = [],
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outputs = [
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"//command_line_option:platforms",
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"@freertos//:freertos_config",
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"@pico-sdk//bazel/config:PICO_STDIO_USB",
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"@pico-sdk//bazel/config:PICO_STDIO_UART",
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"@pigweed//pw_assert:backend",
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"@pigweed//pw_assert:backend_impl",
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"@pigweed//pw_assert:check_backend",
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"@pigweed//pw_assert:check_backend_impl",
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"@pigweed//pw_interrupt:backend",
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"@pigweed//pw_log:backend",
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"@pigweed//pw_log:backend_impl",
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"@pigweed//pw_log_tokenized:handler_backend",
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"@pigweed//pw_sync:binary_semaphore_backend",
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"@pigweed//pw_sync:interrupt_spin_lock_backend",
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"@pigweed//pw_sync:mutex_backend",
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"@pigweed//pw_sync:thread_notification_backend",
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"@pigweed//pw_sync:timed_thread_notification_backend",
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"@pigweed//pw_sys_io:backend",
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"@pigweed//pw_system:extra_platform_libs",
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"@pigweed//pw_thread:id_backend",
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"@pigweed//pw_thread:sleep_backend",
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"@pigweed//pw_thread:thread_backend",
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"@pigweed//pw_thread:iteration_backend",
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"@pigweed//pw_unit_test:main",
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],
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outputs = merge_flags_for_transition_outputs(base = RP2040_SYSTEM_FLAGS, override = _rp2040_flags),
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)
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def _rp2040_binary_impl(ctx):
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30
third_party/freertos/flags.bzl
vendored
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30
third_party/freertos/flags.bzl
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@ -0,0 +1,30 @@
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# Copyright 2024 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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"""Typical FreeRTOS backends and other platform configuration flags."""
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# LINT.IfChange
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FREERTOS_FLAGS = {
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"@pigweed//pw_chrono:system_clock_backend": "@pigweed//pw_chrono_freertos:system_clock",
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"@pigweed//pw_chrono:system_timer_backend": "@pigweed//pw_chrono_freertos:system_timer",
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"@pigweed//pw_sync:binary_semaphore_backend": "@pigweed//pw_sync_freertos:binary_semaphore",
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"@pigweed//pw_sync:interrupt_spin_lock_backend": "@pigweed//pw_sync_freertos:interrupt_spin_lock",
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"@pigweed//pw_sync:mutex_backend": "@pigweed//pw_sync_freertos:mutex",
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"@pigweed//pw_sync:thread_notification_backend": "@pigweed//pw_sync_freertos:thread_notification",
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"@pigweed//pw_sync:timed_thread_notification_backend": "@pigweed//pw_sync_freertos:timed_thread_notification",
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"@pigweed//pw_thread:id_backend": "@pigweed//pw_thread_freertos:id",
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"@pigweed//pw_thread:iteration_backend": "@pigweed//pw_thread_freertos:thread_iteration",
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"@pigweed//pw_thread:sleep_backend": "@pigweed//pw_thread_freertos:sleep",
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"@pigweed//pw_thread:thread_backend": "@pigweed//pw_thread_freertos:thread",
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}
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# LINT.ThenChange(//.bazelrc)
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