Dynamic link shim

[JacobSzwejbka]

The symbols need to be explicitly exported on windows. It would also be convenient for the backend to not be dynamically linked so split the shim out.

[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15663

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❌ 18 New Failures, 2 Unrelated Failures

As of commit a6b20e6 with merge base 3405317 ():

NEW FAILURES - The following jobs have failed:

• Test CUDA Builds / benchmark-model-cuda (google, gemma-3-4b-it, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t d6b49281dc7988988ac63e50f6b066ba47f3c0f4970cf58c5fa55cb7fed74254 /exec failed with exit code 134
• Test CUDA Builds / benchmark-model-cuda (google, gemma-3-4b-it, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t 3629c3dc7a8e5d90f22cc9af04f3b4afc686fd07441644851b4cfb2b84a8bbb7 /exec failed with exit code 134
• Test CUDA Builds / benchmark-model-cuda (mistralai, Voxtral-Mini-3B-2507, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t c08741406d6143065293e527d86b572417b83f6686d6aca09cadcdb2ec517670 /exec failed with exit code 134
• Test CUDA Builds / benchmark-model-cuda (mistralai, Voxtral-Mini-3B-2507, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t f03c8d026290dfe0e66420b6ecc4e9c857c60f994d4eb29055490d3c540e47d0 /exec failed with exit code 134
• Test CUDA Builds / benchmark-model-cuda (mistralai, Voxtral-Mini-3B-2507, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t 6732277b6d028062547cccc106d1f1559e7a52f3686d47586fc6c53edab5d01e /exec failed with exit code 134
• Test CUDA Builds / test-model-cuda-e2e (google, gemma-3-4b-it, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t d613ab61973e7c54eb9bb5a5b0f874a72f6fa61f97f0d352bc078384a213b673 /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (google, gemma-3-4b-it, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t a34e01a0aad9f156a8d131c782b0e724d48688e13a38dc9ca8178e8c6a3211bb /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (mistralai, Voxtral-Mini-3B-2507, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t 5b325e94d38c098b334f64dd488dd6e478f163b7df32b4d5caa7389e45f80a03 /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (mistralai, Voxtral-Mini-3B-2507, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t fc3c5a3a4a08e006eac06f9eab24f067308403071b871d90c95b9f9256a24efb /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (mistralai, Voxtral-Mini-3B-2507, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t f90d71a6ce247dfe3dcad57275bcc3decbf184f87a92aa52e3ec323df244de5e /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-small, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t 2816cda1099d4a57cbf7e62ac145951b2b395f517054b6e4f6807ffb1fcc03ec /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-small, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t 7b2be373bb43e8260515688a26281fe5827ee1672aa33b065632fca21a64b748 /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-small, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t 5dc9b2884a4beda50bf6eeff0295c5fe362599e481ef230146b8d73dbbc06575 /exec failed with exit code 1
• Test CUDA Builds / test-models-cuda (add_mul) / linux-job (gh)
  RuntimeError: Command docker exec -t d183b0b8124220d900cff3b89b62c725865a75c0d2a6dc1899d8c5fee3cf7b6c /exec failed with exit code 134
• Test CUDA Builds / test-models-cuda (add) / linux-job (gh)
  RuntimeError: Command docker exec -t 8914e0a7aa34dbf63d70905350922ee8018d763623403128d23cb225230c90de /exec failed with exit code 134
• Test CUDA Builds / test-models-cuda (conv1d) / linux-job (gh)
  RuntimeError: Command docker exec -t 4049d3ee46fde515619f73632cbdd40c85f3955a300227b164af9e5ac802ea90 /exec failed with exit code 134
• Test CUDA Builds / test-models-cuda (linear) / linux-job (gh)
  RuntimeError: Command docker exec -t 4c4ff92f829526b6e2415ed00cc0bc582cf7766695c05411fc7d46fb078a7932 /exec failed with exit code 134
• Test CUDA Builds / test-models-cuda (resnet18) / linux-job (gh)
  RuntimeError: Command docker exec -t 0f52e4ee62d99072441cec8adde325ce4e85b78bf7365e9ae7e704ec2b72cd7b /exec failed with exit code 134

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / windows / windows-job (gh) (trunk failure)
  backends/xnnpack/test/ops/test_conv1d.py::TestConv1d::test_qs8_conv1d_batchnorm_seq
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  backends/xnnpack/test/ops/test_conv1d.py::TestConv1d::test_qs8_conv1d_batchnorm_seq

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