Set up CMake build for extension/evalue_util

[swolchok]

It didn't have one. Now it does.

[swolchok]

Stack from ghstack (oldest at bottom):

• Use CMake EXPORT #8954
• Fix missing cmake_deps.toml dep from size_test to extension_data_loader #12744
• Don't build MmapDataLoader if sys/mman.h isn't available and we're not on Windows #12743
• -> Set up CMake build for extension/evalue_util #12691
• Build EXTENSION_DATA_LOADER with size_test #12678
• Prefix target_link_options_shared_lib with ExecuTorch #12667

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/12691

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❗ 1 Active SEVs

There are 1 currently active SEVs. If your PR is affected, please view them below:

• linux.aws.h100.8 instance is down, potentially longer queue on linux.aws.h100

❌ 2 New Failures

As of commit 8978c19 with merge base 56b0074 ():

NEW FAILURES - The following jobs have failed:

• Apple / build-demo-ios / macos-job (gh)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 74
• trunk / test-llama-runner-mac (fp32, coreml) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[swolchok]

arm-cortex-m-size-test appears to have failed more than once now with

In file included from /pytorch/executorch/extension/data_loader/mmap_data_loader.cpp:19:
/pytorch/executorch/extension/data_loader/../../../executorch/extension/data_loader/mman.h:18:10: fatal error: sys/mman.h: No such file or directory
18 | #include <sys/mman.h>

puzzling, will have to investigate. other tests are looking pretty good; test-llama-runner-mac (fp32, coreml) looks like it's probably either a flake or a different PR because it's an output change, which this PR really should not cause.

[swolchok]

will have to investigate.

repros on previous PR #12678

does not repro on #12667.

Moving investigation to #12678