rename pure-boilerplate fbcode-only TARGETS to BUCK (#20406)

[bigfootjon]

Summary:

Chunk 3 of fbcode/executorch TARGETS->BUCK migration. 8 directories where
only a TARGETS file existed (no sister BUCK). Each TARGETS is a no-arg
define_common_targets() call, and each shared targets.bzl was
verified to be xplat-compatible (no fbcode_macros loads, no fbcode-only
kwargs like keep_gpu_sections or re_test_utils).

Renaming TARGETS -> BUCK exposes these directories to xplat via dirsync.
Because the targets.bzl is xplat-compatible, the rules will materialize
in xplat for the first time — that is a deliberate side effect of the
migration to a single canonical build file per directory.

Directories migrated:

• backends/aoti
• backends/aoti/slim/c10/core
• backends/aoti/slim/util
• backends/aoti/slim/util/test
• backends/qualcomm/partition
• devtools/etdump/data_sinks/tests
• examples/models/llama/experimental
• extension/kernel_util/test

extension/training/examples/CIFAR was excluded after a trial run —
its targets.bzl uses a runtime.python_binary srcs attribute that the
xplat python_binary macro rejects ("default_only is not allowed to be
specified, but got [data_utils.py]"). It needs a manual fix to the
targets.bzl before it can be migrated.

Reviewed By: mzlee

Differential Revision: D109082059

[pytorch-bot]

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[meta-codesync]

@bigfootjon has exported this pull request. If you are a Meta employee, you can view the originating Diff in D109082059.

[Copilot]

Pull request overview

This PR continues the fbcode TARGETS → BUCK migration by removing boilerplate TARGETS wrappers and (where needed) adding/adjusting BUCK files so define_common_targets() in targets.bzl becomes the single canonical entrypoint for builds (including newly dirsynced xplat exposure).

Changes:

• Remove many boilerplate TARGETS files that only delegated to define_common_targets().
• Add new BUCK files in directories that previously had only TARGETS.
• Update a few existing BUCK files to pass is_fbcode = is_fbcode() into define_common_targets() so fbcode-vs-xplat conditional target materialization remains correct.

Reviewed changes

Copilot reviewed 48 out of 56 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
test/TARGETS	Remove boilerplate wrapper (BUCK already present).
schema/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
schema/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/platform/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/platform/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/core/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/core/exec_aten/util/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/core/exec_aten/testing_util/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/core/exec_aten/testing_util/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/core/exec_aten/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/backend/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
runtime/backend/TARGETS	Remove boilerplate wrapper (BUCK already present).
kernels/prim_ops/TARGETS	Remove boilerplate wrapper (BUCK already present).
kernels/portable/cpu/util/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
kernels/portable/cpu/util/TARGETS	Remove boilerplate wrapper (BUCK already present).
kernels/optimized/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
kernels/optimized/TARGETS	Remove boilerplate wrapper; BUCK updated to handle fbcode/xplat gating.
kernels/optimized/cpu/TARGETS	Remove boilerplate wrapper (BUCK already present).
kernels/optimized/BUCK	Pass is_fbcode() into define_common_targets() to preserve conditional behavior.
extension/threadpool/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/threadpool/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/testing_util/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/testing_util/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/tensor/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/tensor/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/runner_util/test/TARGETS	Remove boilerplate wrapper; BUCK updated to handle fbcode/xplat gating.
extension/runner_util/test/BUCK	Pass is_fbcode() into define_common_targets() to preserve conditional behavior.
extension/runner_util/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/pytree/aten_util/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/pytree/aten_util/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/kernel_util/test/TARGETS	Remove boilerplate wrapper; replace with BUCK.
extension/kernel_util/test/BUCK	Add BUCK wrapper calling define_common_targets().
extension/image/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/image/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/image/benchmark/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/cuda/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/aten_util/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
extension/aten_util/TARGETS	Remove boilerplate wrapper (BUCK already present).
examples/qualcomm/executor_runner/TARGETS	Remove boilerplate wrapper (BUCK already present).
examples/models/llama/experimental/TARGETS	Remove boilerplate wrapper; replace with BUCK.
examples/models/llama/experimental/BUCK	Add BUCK wrapper calling define_common_targets().
devtools/etdump/data_sinks/tests/TARGETS	Remove boilerplate wrapper; replace with BUCK.
devtools/etdump/data_sinks/tests/BUCK	Add BUCK wrapper calling define_common_targets().
codegen/tools/TARGETS	Remove boilerplate wrapper; BUCK updated to handle fbcode/xplat gating consistently.
codegen/tools/BUCK	Pass is_fbcode() into define_common_targets().
codegen/test/TARGETS	Remove boilerplate wrapper (BUCK already present).
backends/vulkan/test/op_tests/TARGETS	Remove boilerplate wrapper; BUCK updated to handle fbcode/xplat gating.
backends/vulkan/test/op_tests/BUCK	Pass is_fbcode() into define_common_targets() to preserve conditional behavior.
backends/vulkan/test/custom_ops/TARGETS	Remove boilerplate wrapper; BUCK updated to handle fbcode/xplat gating.
backends/vulkan/test/custom_ops/BUCK	Pass is_fbcode() into define_common_targets() to preserve conditional behavior.
backends/qualcomm/partition/TARGETS	Remove boilerplate wrapper; replace with BUCK.
backends/qualcomm/partition/BUCK	Add BUCK wrapper calling define_common_targets().
backends/aoti/slim/util/test/BUCK	Add BUCK wrapper calling define_common_targets().
backends/aoti/slim/util/BUCK	Add BUCK wrapper calling define_common_targets().
backends/aoti/slim/c10/core/BUCK	Add BUCK wrapper calling define_common_targets().
backends/aoti/BUCK	Add BUCK wrapper calling define_common_targets().

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