Fix Cmakelists for llama main

[yujiaoliang]

Summary

Do not strip in RelWithDebInfo builds for llama main.

Fixes #16572

[pytorch-bot]

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As of commit 7f300c5 with merge base a9d8230 ():

UNSTABLE - The following job is marked as unstable, possibly due to flakiness on trunk:

• pull / android / run-emulator (gh) (#16137)
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[Copilot]

Pull request overview

This PR fixes the symbol stripping behavior in the llama_main executable build configuration. Previously, symbols were stripped for all non-Debug builds, which incorrectly included RelWithDebInfo. The fix ensures symbols are only stripped for Release and MinSizeRel builds, preserving debug information in RelWithDebInfo builds.

Changes:

• Modified the conditional check for symbol stripping from a negative check (NOT Debug) to a positive check (Release OR MinSizeRel)
• Added a clarifying comment explaining the stripping behavior

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[Copilot]

The same symbol stripping issue exists in other model CMakeLists files (gemma3, llava, whisper, parakeet, voxtral) which still use if(NOT CMAKE_BUILD_TYPE STREQUAL \"Debug\"). For consistency and to prevent the same RelWithDebInfo stripping issue across the codebase, consider applying this fix to those files as well.

[GregoryComer]

Thanks! Can you resolve the lint issue? I can go ahead and merge once that's updated. Instructions for installing and running the linter are here: https://github.com/pytorch/executorch/blob/main/CONTRIBUTING.md#lintrunner. Alternatively, you can just run cmake-format -i examples/models/llama/CMakeLists.txt, if that's easier.

[yujiaoliang]

Thanks! Can you resolve the lint issue? I can go ahead and merge once that's updated. Instructions for installing and running the linter are here: https://github.com/pytorch/executorch/blob/main/CONTRIBUTING.md#lintrunner. Alternatively, you can just run cmake-format -i examples/models/llama/CMakeLists.txt, if that's easier.

Done. I’ve run cmake-format and pushed an updated commit.
Thanks!

[yujiaoliang]

@pytorchbot label "release notes: none"

[GregoryComer]

Looks good. I'll go ahead and merge. Thanks for the contribution!