rename TARGETS-only fbcode dirs with rules to BUCK (xplat-safe)

[bigfootjon]

Summary:
Chunk 5 of fbcode/executorch TARGETS->BUCK migration. 26 directories that
had only a TARGETS file (no sister BUCK) and define real top-level rules.
Each TARGETS was scanned for fbcode-only constructs (fbcode_macros,
fbcode_target(, cpp_unittest(, cpp_library(, cpp_binary(,
re_test_utils, keep_gpu_sections, buck_genrule, //tools/build/buck/)
and only those without any are migrated here. The runtime.* macros they
use are routed by runtime_wrapper.bzl to the right cell-native rule.

Renaming TARGETS -> BUCK exposes these directories to xplat via dirsync.

4 dirs were attempted but reverted because their runtime.python_binary
kwargs (e.g. main_src) are accepted by fbcode_macros' python_binary but
not by xplat's. They need a small targets.bzl tweak before they can land:

• devtools/inspector
• examples/devtools/scripts
• extension/pybindings/fb/test
• runtime/test

Reviewed By: mzlee

Differential Revision: D109082056

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils @Sebastian-Larsson @robell @rascani

[pytorch-bot]

🔗 Helpful Links

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❌ 1 New Failure, 1 Unclassified Failure

As of commit 08a7749 with merge base ff927c8 ():

NEW FAILURE - The following job has failed:

• pull / android / build-android (gh)

UNCLASSIFIED FAILURE - DrCI could not classify the following job because the workflow did not run on the merge base. The failure may be pre-existing on trunk or introduced by this PR:

• trunk / test-static-llama-qnn-eval-linux (baseline, 62) / linux-job (gh) (this job did not run on the merge base, so DrCI cannot tell whether the failure is pre-existing)
  RuntimeError: Command docker exec -t 2405259af6fcc40e6fa57e2515389c8d29ef3d02c9d997c7eb3ec729f4aa1764 /exec failed with exit code 1

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[meta-codesync]

@bigfootjon has exported this pull request. If you are a Meta employee, you can view the originating Diff in D109082056.

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[Copilot]

Pull request overview

Continues the fbcode/executorch TARGETS→BUCK migration by converting additional directories’ build definitions to BUCK files that route through the runtime_wrapper.bzl “runtime” macros, using fbcode_target to keep the same rule semantics across fbcode vs xplat.

Changes:

• Wrap existing runtime.* rule invocations with fbcode_target(_kind = runtime.<rule>) in a set of BUCK files.
• Add fbcode_target loads where needed to support the migration pattern consistently.
• Introduce new BUCK definitions for the Gemma/Gemma2 example model Python libraries.

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
runtime/BUCK	Wrap runtime.python_library with fbcode_target for migration consistency.
extension/pybindings/test/BUCK	Wrap python library/tests with fbcode_target while preserving target attributes.
export/tests/BUCK	Wrap python tests with fbcode_target (including env/labels passthrough).
export/BUCK	Wrap export-related python libraries with fbcode_target.
examples/models/llama/params/BUCK	Wrap runtime.filegroup with fbcode_target.
examples/models/gemma2/BUCK	Add new BUCK target for the Gemma2 example python library via fbcode_target.
examples/models/gemma/BUCK	Add new BUCK target for the Gemma example python library via fbcode_target.
devtools/visualization/BUCK	Wrap devtools visualization python libraries with fbcode_target.
devtools/intermediate_output_tap/BUCK	Wrap intermediate-output-tap python libraries with fbcode_target.
devtools/inspector/numerical_comparator/BUCK	Wrap numerical comparator python libraries with fbcode_target.
devtools/BUCK	Wrap devtools package python library with fbcode_target.
devtools/backend_debug/BUCK	Wrap backend-debug python library with fbcode_target.
backends/xnnpack/recipes/BUCK	Wrap XNNPACK recipe python libraries with fbcode_target.
backends/xnnpack/quantizer/BUCK	Wrap XNNPACK quantizer python libraries with fbcode_target.
backends/xnnpack/partition/config/BUCK	Wrap XNNPACK partition config python library with fbcode_target.
backends/qualcomm/debugger/BUCK	Wrap Qualcomm debugger python libraries with fbcode_target.
backends/mediatek/quantizer/BUCK	Wrap MediaTek quantizer python library with fbcode_target.
backends/cuda/BUCK	Wrap CUDA backend-related python libraries with fbcode_target.
backends/arm/quantizer/BUCK	Wrap Arm quantizer python libraries with fbcode_target.
backends/arm/operators/BUCK	Wrap Arm operators python libraries with fbcode_target.
backends/arm/operator_support/BUCK	Wrap Arm operator support python library with fbcode_target.
backends/arm/debug/BUCK	Wrap Arm debug python library with fbcode_target.
backends/arm/BUCK	Wrap Arm backend python libraries with fbcode_target.
backends/arm/_passes/BUCK	Wrap Arm passes python libraries with fbcode_target.
backends/aoti/passes/BUCK	Wrap AOTI passes python library with fbcode_target.

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